diff options
Diffstat (limited to 'src/crypto/x509/x509_test.go')
| -rw-r--r-- | src/crypto/x509/x509_test.go | 4001 |
1 files changed, 4001 insertions, 0 deletions
diff --git a/src/crypto/x509/x509_test.go b/src/crypto/x509/x509_test.go new file mode 100644 index 0000000..ead0453 --- /dev/null +++ b/src/crypto/x509/x509_test.go @@ -0,0 +1,4001 @@ +// Copyright 2009 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package x509 + +import ( + "bytes" + "crypto" + "crypto/dsa" + "crypto/ecdh" + "crypto/ecdsa" + "crypto/ed25519" + "crypto/elliptic" + "crypto/rand" + "crypto/rsa" + _ "crypto/sha256" + _ "crypto/sha512" + "crypto/x509/pkix" + "encoding/asn1" + "encoding/base64" + "encoding/hex" + "encoding/pem" + "fmt" + "internal/testenv" + "io" + "math" + "math/big" + "net" + "net/url" + "os/exec" + "reflect" + "runtime" + "slices" + "strings" + "testing" + "time" +) + +func TestParsePKCS1PrivateKey(t *testing.T) { + block, _ := pem.Decode([]byte(pemPrivateKey)) + priv, err := ParsePKCS1PrivateKey(block.Bytes) + if err != nil { + t.Errorf("Failed to parse private key: %s", err) + return + } + if priv.PublicKey.N.Cmp(rsaPrivateKey.PublicKey.N) != 0 || + priv.PublicKey.E != rsaPrivateKey.PublicKey.E || + priv.D.Cmp(rsaPrivateKey.D) != 0 || + priv.Primes[0].Cmp(rsaPrivateKey.Primes[0]) != 0 || + priv.Primes[1].Cmp(rsaPrivateKey.Primes[1]) != 0 { + t.Errorf("got:%+v want:%+v", priv, rsaPrivateKey) + } + + // This private key includes an invalid prime that + // rsa.PrivateKey.Validate should reject. + data := []byte("0\x16\x02\x00\x02\x02\u007f\x00\x02\x0200\x02\x0200\x02\x02\x00\x01\x02\x02\u007f\x00") + if _, err := ParsePKCS1PrivateKey(data); err == nil { + t.Errorf("parsing invalid private key did not result in an error") + } +} + +func TestPKCS1MismatchPublicKeyFormat(t *testing.T) { + + const pkixPublicKey = "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" + const errorContains = "use ParsePKIXPublicKey instead" + derBytes, _ := hex.DecodeString(pkixPublicKey) + _, err := ParsePKCS1PublicKey(derBytes) + if !strings.Contains(err.Error(), errorContains) { + t.Errorf("expected error containing %q, got %s", errorContains, err) + } +} + +func TestMarshalInvalidPublicKey(t *testing.T) { + _, err := MarshalPKIXPublicKey(&ecdsa.PublicKey{}) + if err == nil { + t.Errorf("expected error, got MarshalPKIXPublicKey success") + } + _, err = MarshalPKIXPublicKey(&ecdsa.PublicKey{ + Curve: elliptic.P256(), + X: big.NewInt(1), Y: big.NewInt(2), + }) + if err == nil { + t.Errorf("expected error, got MarshalPKIXPublicKey success") + } +} + +func testParsePKIXPublicKey(t *testing.T, pemBytes string) (pub any) { + block, _ := pem.Decode([]byte(pemBytes)) + pub, err := ParsePKIXPublicKey(block.Bytes) + if err != nil { + t.Fatalf("Failed to parse public key: %s", err) + } + + pubBytes2, err := MarshalPKIXPublicKey(pub) + if err != nil { + t.Errorf("Failed to marshal public key for the second time: %s", err) + return + } + if !bytes.Equal(pubBytes2, block.Bytes) { + t.Errorf("Reserialization of public key didn't match. got %x, want %x", pubBytes2, block.Bytes) + } + return +} + +func TestParsePKIXPublicKey(t *testing.T) { + t.Run("RSA", func(t *testing.T) { + pub := testParsePKIXPublicKey(t, pemPublicKey) + _, ok := pub.(*rsa.PublicKey) + if !ok { + t.Errorf("Value returned from ParsePKIXPublicKey was not an RSA public key") + } + }) + t.Run("Ed25519", func(t *testing.T) { + pub := testParsePKIXPublicKey(t, pemEd25519Key) + _, ok := pub.(ed25519.PublicKey) + if !ok { + t.Errorf("Value returned from ParsePKIXPublicKey was not an Ed25519 public key") + } + }) + t.Run("X25519", func(t *testing.T) { + pub := testParsePKIXPublicKey(t, pemX25519Key) + k, ok := pub.(*ecdh.PublicKey) + if !ok || k.Curve() != ecdh.X25519() { + t.Errorf("Value returned from ParsePKIXPublicKey was not an X25519 public key") + } + }) +} + +var pemPublicKey = `-----BEGIN PUBLIC KEY----- +MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA3VoPN9PKUjKFLMwOge6+ +wnDi8sbETGIx2FKXGgqtAKpzmem53kRGEQg8WeqRmp12wgp74TGpkEXsGae7RS1k +enJCnma4fii+noGH7R0qKgHvPrI2Bwa9hzsH8tHxpyM3qrXslOmD45EH9SxIDUBJ +FehNdaPbLP1gFyahKMsdfxFJLUvbUycuZSJ2ZnIgeVxwm4qbSvZInL9Iu4FzuPtg +fINKcbbovy1qq4KvPIrXzhbY3PWDc6btxCf3SE0JdE1MCPThntB62/bLMSQ7xdDR +FF53oIpvxe/SCOymfWq/LW849Ytv3Xwod0+wzAP8STXG4HSELS4UedPYeHJJJYcZ ++QIDAQAB +-----END PUBLIC KEY----- +` + +var pemPrivateKey = testingKey(` +-----BEGIN RSA TESTING KEY----- +MIICXAIBAAKBgQCxoeCUW5KJxNPxMp+KmCxKLc1Zv9Ny+4CFqcUXVUYH69L3mQ7v +IWrJ9GBfcaA7BPQqUlWxWM+OCEQZH1EZNIuqRMNQVuIGCbz5UQ8w6tS0gcgdeGX7 +J7jgCQ4RK3F/PuCM38QBLaHx988qG8NMc6VKErBjctCXFHQt14lerd5KpQIDAQAB +AoGAYrf6Hbk+mT5AI33k2Jt1kcweodBP7UkExkPxeuQzRVe0KVJw0EkcFhywKpr1 +V5eLMrILWcJnpyHE5slWwtFHBG6a5fLaNtsBBtcAIfqTQ0Vfj5c6SzVaJv0Z5rOd +7gQF6isy3t3w9IF3We9wXQKzT6q5ypPGdm6fciKQ8RnzREkCQQDZwppKATqQ41/R +vhSj90fFifrGE6aVKC1hgSpxGQa4oIdsYYHwMzyhBmWW9Xv/R+fPyr8ZwPxp2c12 +33QwOLPLAkEA0NNUb+z4ebVVHyvSwF5jhfJxigim+s49KuzJ1+A2RaSApGyBZiwS +rWvWkB471POAKUYt5ykIWVZ83zcceQiNTwJBAMJUFQZX5GDqWFc/zwGoKkeR49Yi +MTXIvf7Wmv6E++eFcnT461FlGAUHRV+bQQXGsItR/opIG7mGogIkVXa3E1MCQARX +AAA7eoZ9AEHflUeuLn9QJI/r0hyQQLEtrpwv6rDT1GCWaLII5HJ6NUFVf4TTcqxo +6vdM4QGKTJoO+SaCyP0CQFdpcxSAuzpFcKv0IlJ8XzS/cy+mweCMwyJ1PFEc4FX6 +wg/HcAJWY60xZTJDFN+Qfx8ZQvBEin6c2/h+zZi5IVY= +-----END RSA TESTING KEY----- +`) + +// pemEd25519Key is the example from RFC 8410, Section 4. +var pemEd25519Key = ` +-----BEGIN PUBLIC KEY----- +MCowBQYDK2VwAyEAGb9ECWmEzf6FQbrBZ9w7lshQhqowtrbLDFw4rXAxZuE= +-----END PUBLIC KEY----- +` + +// pemX25519Key was generated from pemX25519Key with "openssl pkey -pubout". +var pemX25519Key = ` +-----BEGIN PUBLIC KEY----- +MCowBQYDK2VuAyEA5yGXrH/6OzxuWEhEWS01/f4OP+Of3Yrddy6/J1kDTVM= +-----END PUBLIC KEY----- +` + +func TestPKIXMismatchPublicKeyFormat(t *testing.T) { + + const pkcs1PublicKey = "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" + const errorContains = "use ParsePKCS1PublicKey instead" + derBytes, _ := hex.DecodeString(pkcs1PublicKey) + _, err := ParsePKIXPublicKey(derBytes) + if !strings.Contains(err.Error(), errorContains) { + t.Errorf("expected error containing %q, got %s", errorContains, err) + } +} + +var testPrivateKey *rsa.PrivateKey + +func init() { + block, _ := pem.Decode([]byte(pemPrivateKey)) + + var err error + if testPrivateKey, err = ParsePKCS1PrivateKey(block.Bytes); err != nil { + panic("Failed to parse private key: " + err.Error()) + } +} + +func bigFromString(s string) *big.Int { + ret := new(big.Int) + ret.SetString(s, 10) + return ret +} + +func fromBase10(base10 string) *big.Int { + i := new(big.Int) + i.SetString(base10, 10) + return i +} + +func bigFromHexString(s string) *big.Int { + ret := new(big.Int) + ret.SetString(s, 16) + return ret +} + +var rsaPrivateKey = &rsa.PrivateKey{ + PublicKey: rsa.PublicKey{ + N: bigFromString("124737666279038955318614287965056875799409043964547386061640914307192830334599556034328900586693254156136128122194531292927142396093148164407300419162827624945636708870992355233833321488652786796134504707628792159725681555822420087112284637501705261187690946267527866880072856272532711620639179596808018872997"), + E: 65537, + }, + D: bigFromString("69322600686866301945688231018559005300304807960033948687567105312977055197015197977971637657636780793670599180105424702854759606794705928621125408040473426339714144598640466128488132656829419518221592374964225347786430566310906679585739468938549035854760501049443920822523780156843263434219450229353270690889"), + Primes: []*big.Int{ + bigFromString("11405025354575369741595561190164746858706645478381139288033759331174478411254205003127028642766986913445391069745480057674348716675323735886284176682955723"), + bigFromString("10937079261204603443118731009201819560867324167189758120988909645641782263430128449826989846631183550578761324239709121189827307416350485191350050332642639"), + }, +} + +func TestMarshalRSAPrivateKey(t *testing.T) { + priv := &rsa.PrivateKey{ + PublicKey: rsa.PublicKey{ + N: fromBase10("16346378922382193400538269749936049106320265317511766357599732575277382844051791096569333808598921852351577762718529818072849191122419410612033592401403764925096136759934497687765453905884149505175426053037420486697072448609022753683683718057795566811401938833367954642951433473337066311978821180526439641496973296037000052546108507805269279414789035461158073156772151892452251106173507240488993608650881929629163465099476849643165682709047462010581308719577053905787496296934240246311806555924593059995202856826239801816771116902778517096212527979497399966526283516447337775509777558018145573127308919204297111496233"), + E: 3, + }, + D: fromBase10("10897585948254795600358846499957366070880176878341177571733155050184921896034527397712889205732614568234385175145686545381899460748279607074689061600935843283397424506622998458510302603922766336783617368686090042765718290914099334449154829375179958369993407724946186243249568928237086215759259909861748642124071874879861299389874230489928271621259294894142840428407196932444474088857746123104978617098858619445675532587787023228852383149557470077802718705420275739737958953794088728369933811184572620857678792001136676902250566845618813972833750098806496641114644760255910789397593428910198080271317419213080834885003"), + Primes: []*big.Int{ + fromBase10("1025363189502892836833747188838978207017355117492483312747347695538428729137306368764177201532277413433182799108299960196606011786562992097313508180436744488171474690412562218914213688661311117337381958560443"), + fromBase10("3467903426626310123395340254094941045497208049900750380025518552334536945536837294961497712862519984786362199788654739924501424784631315081391467293694361474867825728031147665777546570788493758372218019373"), + fromBase10("4597024781409332673052708605078359346966325141767460991205742124888960305710298765592730135879076084498363772408626791576005136245060321874472727132746643162385746062759369754202494417496879741537284589047"), + }, + } + + derBytes := MarshalPKCS1PrivateKey(priv) + + priv2, err := ParsePKCS1PrivateKey(derBytes) + if err != nil { + t.Errorf("error parsing serialized key: %s", err) + return + } + if priv.PublicKey.N.Cmp(priv2.PublicKey.N) != 0 || + priv.PublicKey.E != priv2.PublicKey.E || + priv.D.Cmp(priv2.D) != 0 || + len(priv2.Primes) != 3 || + priv.Primes[0].Cmp(priv2.Primes[0]) != 0 || + priv.Primes[1].Cmp(priv2.Primes[1]) != 0 || + priv.Primes[2].Cmp(priv2.Primes[2]) != 0 { + t.Errorf("got:%+v want:%+v", priv, priv2) + } +} + +func TestMarshalRSAPublicKey(t *testing.T) { + pub := &rsa.PublicKey{ + N: fromBase10("16346378922382193400538269749936049106320265317511766357599732575277382844051791096569333808598921852351577762718529818072849191122419410612033592401403764925096136759934497687765453905884149505175426053037420486697072448609022753683683718057795566811401938833367954642951433473337066311978821180526439641496973296037000052546108507805269279414789035461158073156772151892452251106173507240488993608650881929629163465099476849643165682709047462010581308719577053905787496296934240246311806555924593059995202856826239801816771116902778517096212527979497399966526283516447337775509777558018145573127308919204297111496233"), + E: 3, + } + derBytes := MarshalPKCS1PublicKey(pub) + pub2, err := ParsePKCS1PublicKey(derBytes) + if err != nil { + t.Errorf("ParsePKCS1PublicKey: %s", err) + } + if pub.N.Cmp(pub2.N) != 0 || pub.E != pub2.E { + t.Errorf("ParsePKCS1PublicKey = %+v, want %+v", pub, pub2) + } + + // It's never been documented that asn1.Marshal/Unmarshal on rsa.PublicKey works, + // but it does, and we know of code that depends on it. + // Lock that in, even though we'd prefer that people use MarshalPKCS1PublicKey and ParsePKCS1PublicKey. + derBytes2, err := asn1.Marshal(*pub) + if err != nil { + t.Errorf("Marshal(rsa.PublicKey): %v", err) + } else if !bytes.Equal(derBytes, derBytes2) { + t.Errorf("Marshal(rsa.PublicKey) = %x, want %x", derBytes2, derBytes) + } + pub3 := new(rsa.PublicKey) + rest, err := asn1.Unmarshal(derBytes, pub3) + if err != nil { + t.Errorf("Unmarshal(rsa.PublicKey): %v", err) + } + if len(rest) != 0 || pub.N.Cmp(pub3.N) != 0 || pub.E != pub3.E { + t.Errorf("Unmarshal(rsa.PublicKey) = %+v, %q want %+v, %q", pub, rest, pub2, []byte(nil)) + } + + publicKeys := []struct { + derBytes []byte + expectedErrSubstr string + }{ + { + derBytes: []byte{ + 0x30, 6, // SEQUENCE, 6 bytes + 0x02, 1, // INTEGER, 1 byte + 17, + 0x02, 1, // INTEGER, 1 byte + 3, // 3 + }, + }, { + derBytes: []byte{ + 0x30, 6, // SEQUENCE + 0x02, 1, // INTEGER, 1 byte + 0xff, // -1 + 0x02, 1, // INTEGER, 1 byte + 3, + }, + expectedErrSubstr: "zero or negative", + }, { + derBytes: []byte{ + 0x30, 6, // SEQUENCE + 0x02, 1, // INTEGER, 1 byte + 17, + 0x02, 1, // INTEGER, 1 byte + 0xff, // -1 + }, + expectedErrSubstr: "zero or negative", + }, { + derBytes: []byte{ + 0x30, 6, // SEQUENCE + 0x02, 1, // INTEGER, 1 byte + 17, + 0x02, 1, // INTEGER, 1 byte + 3, + 1, + }, + expectedErrSubstr: "trailing data", + }, { + derBytes: []byte{ + 0x30, 9, // SEQUENCE + 0x02, 1, // INTEGER, 1 byte + 17, + 0x02, 4, // INTEGER, 4 bytes + 0x7f, 0xff, 0xff, 0xff, + }, + }, { + derBytes: []byte{ + 0x30, 10, // SEQUENCE + 0x02, 1, // INTEGER, 1 byte + 17, + 0x02, 5, // INTEGER, 5 bytes + 0x00, 0x80, 0x00, 0x00, 0x00, + }, + // On 64-bit systems, encoding/asn1 will accept the + // public exponent, but ParsePKCS1PublicKey will return + // an error. On 32-bit systems, encoding/asn1 will + // return the error. The common substring of both error + // is the word “large”. + expectedErrSubstr: "large", + }, + } + + for i, test := range publicKeys { + shouldFail := len(test.expectedErrSubstr) > 0 + pub, err := ParsePKCS1PublicKey(test.derBytes) + if shouldFail { + if err == nil { + t.Errorf("#%d: unexpected success, got %#v", i, pub) + } else if !strings.Contains(err.Error(), test.expectedErrSubstr) { + t.Errorf("#%d: expected error containing %q, got %s", i, test.expectedErrSubstr, err) + } + } else { + if err != nil { + t.Errorf("#%d: unexpected failure: %s", i, err) + continue + } + reserialized := MarshalPKCS1PublicKey(pub) + if !bytes.Equal(reserialized, test.derBytes) { + t.Errorf("#%d: failed to reserialize: got %x, expected %x", i, reserialized, test.derBytes) + } + } + } +} + +type matchHostnamesTest struct { + pattern, host string + ok bool +} + +var matchHostnamesTests = []matchHostnamesTest{ + {"a.b.c", "a.b.c", true}, + {"a.b.c", "b.b.c", false}, + {"", "b.b.c", false}, + {"a.b.c", "", false}, + {"example.com", "example.com", true}, + {"example.com", "www.example.com", false}, + {"*.example.com", "example.com", false}, + {"*.example.com", "www.example.com", true}, + {"*.example.com", "www.example.com.", true}, + {"*.example.com", "xyz.www.example.com", false}, + {"*.example.com", "https://www.example.com", false}, // Issue 27591 + {"*.example..com", "www.example..com", false}, + {"www.example..com", "www.example..com", true}, + {"*.*.example.com", "xyz.www.example.com", false}, + {"*.www.*.com", "xyz.www.example.com", false}, + {"*bar.example.com", "foobar.example.com", false}, + {"f*.example.com", "foobar.example.com", false}, + {"www.example.com", "*.example.com", false}, + {"", ".", false}, + {".", "", false}, + {".", ".", false}, + {"example.com", "example.com.", true}, + {"example.com.", "example.com", false}, + {"example.com.", "example.com.", true}, // perfect matches allow trailing dots in patterns + {"*.com.", "example.com.", false}, + {"*.com.", "example.com", false}, + {"*.com", "example.com", true}, + {"*.com", "example.com.", true}, + {"foo:bar", "foo:bar", true}, + {"*.foo:bar", "xxx.foo:bar", false}, + {"*.2.3.4", "1.2.3.4", false}, + {"*.2.3.4", "[1.2.3.4]", false}, + {"*:4860:4860::8888", "2001:4860:4860::8888", false}, + {"*:4860:4860::8888", "[2001:4860:4860::8888]", false}, + {"2001:4860:4860::8888", "2001:4860:4860::8888", false}, + {"2001:4860:4860::8888", "[2001:4860:4860::8888]", false}, + {"[2001:4860:4860::8888]", "2001:4860:4860::8888", false}, + {"[2001:4860:4860::8888]", "[2001:4860:4860::8888]", false}, +} + +func TestMatchHostnames(t *testing.T) { + for i, test := range matchHostnamesTests { + c := &Certificate{DNSNames: []string{test.pattern}} + r := c.VerifyHostname(test.host) == nil + if r != test.ok { + t.Errorf("#%d mismatch got: %t want: %t when matching '%s' against '%s'", i, r, test.ok, test.host, test.pattern) + } + } +} + +func TestMatchIP(t *testing.T) { + // Check that pattern matching is working. + c := &Certificate{ + DNSNames: []string{"*.foo.bar.baz"}, + Subject: pkix.Name{ + CommonName: "*.foo.bar.baz", + }, + } + err := c.VerifyHostname("quux.foo.bar.baz") + if err != nil { + t.Fatalf("VerifyHostname(quux.foo.bar.baz): %v", err) + } + + // But check that if we change it to be matching against an IP address, + // it is rejected. + c = &Certificate{ + DNSNames: []string{"*.2.3.4"}, + Subject: pkix.Name{ + CommonName: "*.2.3.4", + }, + } + err = c.VerifyHostname("1.2.3.4") + if err == nil { + t.Fatalf("VerifyHostname(1.2.3.4) should have failed, did not") + } + + c = &Certificate{ + IPAddresses: []net.IP{net.ParseIP("127.0.0.1"), net.ParseIP("::1")}, + } + err = c.VerifyHostname("127.0.0.1") + if err != nil { + t.Fatalf("VerifyHostname(127.0.0.1): %v", err) + } + err = c.VerifyHostname("::1") + if err != nil { + t.Fatalf("VerifyHostname(::1): %v", err) + } + err = c.VerifyHostname("[::1]") + if err != nil { + t.Fatalf("VerifyHostname([::1]): %v", err) + } +} + +func TestCertificateParse(t *testing.T) { + s, _ := base64.StdEncoding.DecodeString(certBytes) + certs, err := ParseCertificates(s) + if err != nil { + t.Error(err) + } + if len(certs) != 2 { + t.Errorf("Wrong number of certs: got %d want 2", len(certs)) + return + } + + err = certs[0].CheckSignatureFrom(certs[1]) + if err != nil { + t.Error(err) + } + + if err := certs[0].VerifyHostname("mail.google.com"); err != nil { + t.Error(err) + } + + const expectedExtensions = 10 + if n := len(certs[0].Extensions); n != expectedExtensions { + t.Errorf("want %d extensions, got %d", expectedExtensions, n) + } +} + +func TestCertificateEqualOnNil(t *testing.T) { + cNonNil := new(Certificate) + var cNil1, cNil2 *Certificate + if !cNil1.Equal(cNil2) { + t.Error("Nil certificates: cNil1 is not equal to cNil2") + } + if !cNil2.Equal(cNil1) { + t.Error("Nil certificates: cNil2 is not equal to cNil1") + } + if cNil1.Equal(cNonNil) { + t.Error("Unexpectedly cNil1 is equal to cNonNil") + } + if cNonNil.Equal(cNil1) { + t.Error("Unexpectedly cNonNil is equal to cNil1") + } +} + +func TestMismatchedSignatureAlgorithm(t *testing.T) { + der, _ := pem.Decode([]byte(rsaPSSSelfSignedPEM)) + if der == nil { + t.Fatal("Failed to find PEM block") + } + + cert, err := ParseCertificate(der.Bytes) + if err != nil { + t.Fatal(err) + } + + if err = cert.CheckSignature(ECDSAWithSHA256, nil, nil); err == nil { + t.Fatal("CheckSignature unexpectedly return no error") + } + + const expectedSubstring = " but have public key of type " + if !strings.Contains(err.Error(), expectedSubstring) { + t.Errorf("Expected error containing %q, but got %q", expectedSubstring, err) + } +} + +var certBytes = "MIIE0jCCA7qgAwIBAgIQWcvS+TTB3GwCAAAAAGEAWzANBgkqhkiG9w0BAQsFADBCMQswCQYD" + + "VQQGEwJVUzEeMBwGA1UEChMVR29vZ2xlIFRydXN0IFNlcnZpY2VzMRMwEQYDVQQDEwpHVFMg" + + "Q0EgMU8xMB4XDTIwMDQwMTEyNTg1NloXDTIwMDYyNDEyNTg1NlowaTELMAkGA1UEBhMCVVMx" + + "EzARBgNVBAgTCkNhbGlmb3JuaWExFjAUBgNVBAcTDU1vdW50YWluIFZpZXcxEzARBgNVBAoT" + + "Ckdvb2dsZSBMTEMxGDAWBgNVBAMTD21haWwuZ29vZ2xlLmNvbTBZMBMGByqGSM49AgEGCCqG" + + "SM49AwEHA0IABO+dYiPnkFl+cZVf6mrWeNp0RhQcJSBGH+sEJxjvc+cYlW3QJCnm57qlpFdd" + + "pz3MPyVejvXQdM6iI1mEWP4C2OujggJmMIICYjAOBgNVHQ8BAf8EBAMCB4AwEwYDVR0lBAww" + + "CgYIKwYBBQUHAwEwDAYDVR0TAQH/BAIwADAdBgNVHQ4EFgQUI6pZhnQ/lQgmPDwSKR2A54G7" + + "AS4wHwYDVR0jBBgwFoAUmNH4bhDrz5vsYJ8YkBug630J/SswZAYIKwYBBQUHAQEEWDBWMCcG" + + "CCsGAQUFBzABhhtodHRwOi8vb2NzcC5wa2kuZ29vZy9ndHMxbzEwKwYIKwYBBQUHMAKGH2h0" + + "dHA6Ly9wa2kuZ29vZy9nc3IyL0dUUzFPMS5jcnQwLAYDVR0RBCUwI4IPbWFpbC5nb29nbGUu" + + "Y29tghBpbmJveC5nb29nbGUuY29tMCEGA1UdIAQaMBgwCAYGZ4EMAQICMAwGCisGAQQB1nkC" + + "BQMwLwYDVR0fBCgwJjAkoCKgIIYeaHR0cDovL2NybC5wa2kuZ29vZy9HVFMxTzEuY3JsMIIB" + + "AwYKKwYBBAHWeQIEAgSB9ASB8QDvAHYAsh4FzIuizYogTodm+Su5iiUgZ2va+nDnsklTLe+L" + + "kF4AAAFxNgmxKgAABAMARzBFAiEA12/OHdTGXQ3qHHC3NvYCyB8aEz/+ZFOLCAI7lhqj28sC" + + "IG2/7Yz2zK6S6ai+dH7cTMZmoFGo39gtaTqtZAqEQX7nAHUAXqdz+d9WwOe1Nkh90EngMnqR" + + "mgyEoRIShBh1loFxRVgAAAFxNgmxTAAABAMARjBEAiA7PNq+MFfv6O9mBkxFViS2TfU66yRB" + + "/njcebWglLQjZQIgOyRKhxlEizncFRml7yn4Bg48ktXKGjo+uiw6zXEINb0wDQYJKoZIhvcN" + + "AQELBQADggEBADM2Rh306Q10PScsolYMxH1B/K4Nb2WICvpY0yDPJFdnGjqCYym196TjiEvs" + + "R6etfeHdyzlZj6nh82B4TVyHjiWM02dQgPalOuWQcuSy0OvLh7F1E7CeHzKlczdFPBTOTdM1" + + "RDTxlvw1bAqc0zueM8QIAyEy3opd7FxAcGQd5WRIJhzLBL+dbbMOW/LTeW7cm/Xzq8cgCybN" + + "BSZAvhjseJ1L29OlCTZL97IfnX0IlFQzWuvvHy7V2B0E3DHlzM0kjwkkCKDUUp/wajv2NZKC" + + "TkhEyERacZRKc9U0ADxwsAzHrdz5+5zfD2usEV/MQ5V6d8swLXs+ko0X6swrd4YCiB8wggRK" + + "MIIDMqADAgECAg0B47SaoY2KqYElaVC4MA0GCSqGSIb3DQEBCwUAMEwxIDAeBgNVBAsTF0ds" + + "b2JhbFNpZ24gUm9vdCBDQSAtIFIyMRMwEQYDVQQKEwpHbG9iYWxTaWduMRMwEQYDVQQDEwpH" + + "bG9iYWxTaWduMB4XDTE3MDYxNTAwMDA0MloXDTIxMTIxNTAwMDA0MlowQjELMAkGA1UEBhMC" + + "VVMxHjAcBgNVBAoTFUdvb2dsZSBUcnVzdCBTZXJ2aWNlczETMBEGA1UEAxMKR1RTIENBIDFP" + + "MTCCASIwDQYJKoZIhvcNAQEBBQADggEPADCCAQoCggEBANAYz0XUi83TnORA73603WkhG8nP" + + "PI5MdbkPMRmEPZ48Ke9QDRCTbwWAgJ8qoL0SSwLhPZ9YFiT+MJ8LdHdVkx1L903hkoIQ9lGs" + + "DMOyIpQPNGuYEEnnC52DOd0gxhwt79EYYWXnI4MgqCMS/9Ikf9Qv50RqW03XUGawr55CYwX7" + + "4BzEY2Gvn2oz/2KXvUjZ03wUZ9x13C5p6PhteGnQtxAFuPExwjsk/RozdPgj4OxrGYoWxuPN" + + "pM0L27OkWWA4iDutHbnGjKdTG/y82aSrvN08YdeTFZjugb2P4mRHIEAGTtesl+i5wFkSoUkl" + + "I+TtcDQspbRjfPmjPYPRzW0krAcCAwEAAaOCATMwggEvMA4GA1UdDwEB/wQEAwIBhjAdBgNV" + + "HSUEFjAUBggrBgEFBQcDAQYIKwYBBQUHAwIwEgYDVR0TAQH/BAgwBgEB/wIBADAdBgNVHQ4E" + + "FgQUmNH4bhDrz5vsYJ8YkBug630J/SswHwYDVR0jBBgwFoAUm+IHV2ccHsBqBt5ZtJot39wZ" + + "hi4wNQYIKwYBBQUHAQEEKTAnMCUGCCsGAQUFBzABhhlodHRwOi8vb2NzcC5wa2kuZ29vZy9n" + + "c3IyMDIGA1UdHwQrMCkwJ6AloCOGIWh0dHA6Ly9jcmwucGtpLmdvb2cvZ3NyMi9nc3IyLmNy" + + "bDA/BgNVHSAEODA2MDQGBmeBDAECAjAqMCgGCCsGAQUFBwIBFhxodHRwczovL3BraS5nb29n" + + "L3JlcG9zaXRvcnkvMA0GCSqGSIb3DQEBCwUAA4IBAQAagD42efvzLqlGN31eVBY1rsdOCJn+" + + "vdE0aSZSZgc9CrpJy2L08RqO/BFPaJZMdCvTZ96yo6oFjYRNTCBlD6WW2g0W+Gw7228EI4hr" + + "OmzBYL1on3GO7i1YNAfw1VTphln9e14NIZT1jMmo+NjyrcwPGvOap6kEJ/mjybD/AnhrYbrH" + + "NSvoVvpPwxwM7bY8tEvq7czhPOzcDYzWPpvKQliLzBYhF0C8otZm79rEFVvNiaqbCSbnMtIN" + + "bmcgAlsQsJAJnAwfnq3YO+qh/GzoEFwIUhlRKnG7rHq13RXtK8kIKiyKtKYhq2P/11JJUNCJ" + + "t63yr/tQri/hlQ3zRq2dnPXK" + +func parseCIDR(s string) *net.IPNet { + _, net, err := net.ParseCIDR(s) + if err != nil { + panic(err) + } + return net +} + +func parseURI(s string) *url.URL { + uri, err := url.Parse(s) + if err != nil { + panic(err) + } + return uri +} + +func TestCreateSelfSignedCertificate(t *testing.T) { + random := rand.Reader + + ecdsaPriv, err := ecdsa.GenerateKey(elliptic.P256(), rand.Reader) + if err != nil { + t.Fatalf("Failed to generate ECDSA key: %s", err) + } + + ed25519Pub, ed25519Priv, err := ed25519.GenerateKey(random) + if err != nil { + t.Fatalf("Failed to generate Ed25519 key: %s", err) + } + + tests := []struct { + name string + pub, priv any + checkSig bool + sigAlgo SignatureAlgorithm + }{ + {"RSA/RSA", &testPrivateKey.PublicKey, testPrivateKey, true, SHA384WithRSA}, + {"RSA/ECDSA", &testPrivateKey.PublicKey, ecdsaPriv, false, ECDSAWithSHA384}, + {"ECDSA/RSA", &ecdsaPriv.PublicKey, testPrivateKey, false, SHA256WithRSA}, + {"ECDSA/ECDSA", &ecdsaPriv.PublicKey, ecdsaPriv, true, ECDSAWithSHA256}, + {"RSAPSS/RSAPSS", &testPrivateKey.PublicKey, testPrivateKey, true, SHA256WithRSAPSS}, + {"ECDSA/RSAPSS", &ecdsaPriv.PublicKey, testPrivateKey, false, SHA256WithRSAPSS}, + {"RSAPSS/ECDSA", &testPrivateKey.PublicKey, ecdsaPriv, false, ECDSAWithSHA384}, + {"Ed25519", ed25519Pub, ed25519Priv, true, PureEd25519}, + } + + testExtKeyUsage := []ExtKeyUsage{ExtKeyUsageClientAuth, ExtKeyUsageServerAuth} + testUnknownExtKeyUsage := []asn1.ObjectIdentifier{[]int{1, 2, 3}, []int{2, 59, 1}} + extraExtensionData := []byte("extra extension") + + for _, test := range tests { + commonName := "test.example.com" + template := Certificate{ + SerialNumber: big.NewInt(1), + Subject: pkix.Name{ + CommonName: commonName, + Organization: []string{"Σ Acme Co"}, + Country: []string{"US"}, + ExtraNames: []pkix.AttributeTypeAndValue{ + { + Type: []int{2, 5, 4, 42}, + Value: "Gopher", + }, + // This should override the Country, above. + { + Type: []int{2, 5, 4, 6}, + Value: "NL", + }, + }, + }, + NotBefore: time.Unix(1000, 0), + NotAfter: time.Unix(100000, 0), + + SignatureAlgorithm: test.sigAlgo, + + SubjectKeyId: []byte{1, 2, 3, 4}, + KeyUsage: KeyUsageCertSign, + + ExtKeyUsage: testExtKeyUsage, + UnknownExtKeyUsage: testUnknownExtKeyUsage, + + BasicConstraintsValid: true, + IsCA: true, + + OCSPServer: []string{"http://ocsp.example.com"}, + IssuingCertificateURL: []string{"http://crt.example.com/ca1.crt"}, + + DNSNames: []string{"test.example.com"}, + EmailAddresses: []string{"gopher@golang.org"}, + IPAddresses: []net.IP{net.IPv4(127, 0, 0, 1).To4(), net.ParseIP("2001:4860:0:2001::68")}, + URIs: []*url.URL{parseURI("https://foo.com/wibble#foo")}, + + PolicyIdentifiers: []asn1.ObjectIdentifier{[]int{1, 2, 3}}, + Policies: []OID{mustNewOIDFromInts(t, []uint64{1, 2, 3, math.MaxUint32, math.MaxUint64})}, + PermittedDNSDomains: []string{".example.com", "example.com"}, + ExcludedDNSDomains: []string{"bar.example.com"}, + PermittedIPRanges: []*net.IPNet{parseCIDR("192.168.1.1/16"), parseCIDR("1.2.3.4/8")}, + ExcludedIPRanges: []*net.IPNet{parseCIDR("2001:db8::/48")}, + PermittedEmailAddresses: []string{"foo@example.com"}, + ExcludedEmailAddresses: []string{".example.com", "example.com"}, + PermittedURIDomains: []string{".bar.com", "bar.com"}, + ExcludedURIDomains: []string{".bar2.com", "bar2.com"}, + + CRLDistributionPoints: []string{"http://crl1.example.com/ca1.crl", "http://crl2.example.com/ca1.crl"}, + + ExtraExtensions: []pkix.Extension{ + { + Id: []int{1, 2, 3, 4}, + Value: extraExtensionData, + }, + // This extension should override the SubjectKeyId, above. + { + Id: oidExtensionSubjectKeyId, + Critical: false, + Value: []byte{0x04, 0x04, 4, 3, 2, 1}, + }, + }, + } + + derBytes, err := CreateCertificate(random, &template, &template, test.pub, test.priv) + if err != nil { + t.Errorf("%s: failed to create certificate: %s", test.name, err) + continue + } + + cert, err := ParseCertificate(derBytes) + if err != nil { + t.Errorf("%s: failed to parse certificate: %s", test.name, err) + continue + } + + if len(cert.PolicyIdentifiers) != 1 || !cert.PolicyIdentifiers[0].Equal(template.PolicyIdentifiers[0]) { + t.Errorf("%s: failed to parse policy identifiers: got:%#v want:%#v", test.name, cert.PolicyIdentifiers, template.PolicyIdentifiers) + } + + if len(cert.PermittedDNSDomains) != 2 || cert.PermittedDNSDomains[0] != ".example.com" || cert.PermittedDNSDomains[1] != "example.com" { + t.Errorf("%s: failed to parse name constraints: %#v", test.name, cert.PermittedDNSDomains) + } + + if len(cert.ExcludedDNSDomains) != 1 || cert.ExcludedDNSDomains[0] != "bar.example.com" { + t.Errorf("%s: failed to parse name constraint exclusions: %#v", test.name, cert.ExcludedDNSDomains) + } + + if len(cert.PermittedIPRanges) != 2 || cert.PermittedIPRanges[0].String() != "192.168.0.0/16" || cert.PermittedIPRanges[1].String() != "1.0.0.0/8" { + t.Errorf("%s: failed to parse IP constraints: %#v", test.name, cert.PermittedIPRanges) + } + + if len(cert.ExcludedIPRanges) != 1 || cert.ExcludedIPRanges[0].String() != "2001:db8::/48" { + t.Errorf("%s: failed to parse IP constraint exclusions: %#v", test.name, cert.ExcludedIPRanges) + } + + if len(cert.PermittedEmailAddresses) != 1 || cert.PermittedEmailAddresses[0] != "foo@example.com" { + t.Errorf("%s: failed to parse permitted email addresses: %#v", test.name, cert.PermittedEmailAddresses) + } + + if len(cert.ExcludedEmailAddresses) != 2 || cert.ExcludedEmailAddresses[0] != ".example.com" || cert.ExcludedEmailAddresses[1] != "example.com" { + t.Errorf("%s: failed to parse excluded email addresses: %#v", test.name, cert.ExcludedEmailAddresses) + } + + if len(cert.PermittedURIDomains) != 2 || cert.PermittedURIDomains[0] != ".bar.com" || cert.PermittedURIDomains[1] != "bar.com" { + t.Errorf("%s: failed to parse permitted URIs: %#v", test.name, cert.PermittedURIDomains) + } + + if len(cert.ExcludedURIDomains) != 2 || cert.ExcludedURIDomains[0] != ".bar2.com" || cert.ExcludedURIDomains[1] != "bar2.com" { + t.Errorf("%s: failed to parse excluded URIs: %#v", test.name, cert.ExcludedURIDomains) + } + + if cert.Subject.CommonName != commonName { + t.Errorf("%s: subject wasn't correctly copied from the template. Got %s, want %s", test.name, cert.Subject.CommonName, commonName) + } + + if len(cert.Subject.Country) != 1 || cert.Subject.Country[0] != "NL" { + t.Errorf("%s: ExtraNames didn't override Country", test.name) + } + + for _, ext := range cert.Extensions { + if ext.Id.Equal(oidExtensionSubjectAltName) { + if ext.Critical { + t.Fatal("SAN extension is marked critical") + } + } + } + + found := false + for _, atv := range cert.Subject.Names { + if atv.Type.Equal([]int{2, 5, 4, 42}) { + found = true + break + } + } + if !found { + t.Errorf("%s: Names didn't contain oid 2.5.4.42 from ExtraNames", test.name) + } + + if cert.Issuer.CommonName != commonName { + t.Errorf("%s: issuer wasn't correctly copied from the template. Got %s, want %s", test.name, cert.Issuer.CommonName, commonName) + } + + if cert.SignatureAlgorithm != test.sigAlgo { + t.Errorf("%s: SignatureAlgorithm wasn't copied from template. Got %v, want %v", test.name, cert.SignatureAlgorithm, test.sigAlgo) + } + + if !reflect.DeepEqual(cert.ExtKeyUsage, testExtKeyUsage) { + t.Errorf("%s: extkeyusage wasn't correctly copied from the template. Got %v, want %v", test.name, cert.ExtKeyUsage, testExtKeyUsage) + } + + if !reflect.DeepEqual(cert.UnknownExtKeyUsage, testUnknownExtKeyUsage) { + t.Errorf("%s: unknown extkeyusage wasn't correctly copied from the template. Got %v, want %v", test.name, cert.UnknownExtKeyUsage, testUnknownExtKeyUsage) + } + + if !reflect.DeepEqual(cert.OCSPServer, template.OCSPServer) { + t.Errorf("%s: OCSP servers differ from template. Got %v, want %v", test.name, cert.OCSPServer, template.OCSPServer) + } + + if !reflect.DeepEqual(cert.IssuingCertificateURL, template.IssuingCertificateURL) { + t.Errorf("%s: Issuing certificate URLs differ from template. Got %v, want %v", test.name, cert.IssuingCertificateURL, template.IssuingCertificateURL) + } + + if !reflect.DeepEqual(cert.DNSNames, template.DNSNames) { + t.Errorf("%s: SAN DNS names differ from template. Got %v, want %v", test.name, cert.DNSNames, template.DNSNames) + } + + if !reflect.DeepEqual(cert.EmailAddresses, template.EmailAddresses) { + t.Errorf("%s: SAN emails differ from template. Got %v, want %v", test.name, cert.EmailAddresses, template.EmailAddresses) + } + + if len(cert.URIs) != 1 || cert.URIs[0].String() != "https://foo.com/wibble#foo" { + t.Errorf("%s: URIs differ from template. Got %v, want %v", test.name, cert.URIs, template.URIs) + } + + if !reflect.DeepEqual(cert.IPAddresses, template.IPAddresses) { + t.Errorf("%s: SAN IPs differ from template. Got %v, want %v", test.name, cert.IPAddresses, template.IPAddresses) + } + + if !reflect.DeepEqual(cert.CRLDistributionPoints, template.CRLDistributionPoints) { + t.Errorf("%s: CRL distribution points differ from template. Got %v, want %v", test.name, cert.CRLDistributionPoints, template.CRLDistributionPoints) + } + + if !bytes.Equal(cert.SubjectKeyId, []byte{4, 3, 2, 1}) { + t.Errorf("%s: ExtraExtensions didn't override SubjectKeyId", test.name) + } + + if !bytes.Contains(derBytes, extraExtensionData) { + t.Errorf("%s: didn't find extra extension in DER output", test.name) + } + + if test.checkSig { + err = cert.CheckSignatureFrom(cert) + if err != nil { + t.Errorf("%s: signature verification failed: %s", test.name, err) + } + } + } +} + +// Self-signed certificate using ECDSA with SHA1 & secp256r1 +var ecdsaSHA1CertPem = ` +-----BEGIN CERTIFICATE----- +MIICDjCCAbUCCQDF6SfN0nsnrjAJBgcqhkjOPQQBMIGPMQswCQYDVQQGEwJVUzET +MBEGA1UECAwKQ2FsaWZvcm5pYTEWMBQGA1UEBwwNTW91bnRhaW4gVmlldzEVMBMG +A1UECgwMR29vZ2xlLCBJbmMuMRcwFQYDVQQDDA53d3cuZ29vZ2xlLmNvbTEjMCEG +CSqGSIb3DQEJARYUZ29sYW5nLWRldkBnbWFpbC5jb20wHhcNMTIwNTIwMjAyMDUw +WhcNMjIwNTE4MjAyMDUwWjCBjzELMAkGA1UEBhMCVVMxEzARBgNVBAgMCkNhbGlm +b3JuaWExFjAUBgNVBAcMDU1vdW50YWluIFZpZXcxFTATBgNVBAoMDEdvb2dsZSwg +SW5jLjEXMBUGA1UEAwwOd3d3Lmdvb2dsZS5jb20xIzAhBgkqhkiG9w0BCQEWFGdv +bGFuZy1kZXZAZ21haWwuY29tMFkwEwYHKoZIzj0CAQYIKoZIzj0DAQcDQgAE/Wgn +WQDo5+bz71T0327ERgd5SDDXFbXLpzIZDXTkjpe8QTEbsF+ezsQfrekrpDPC4Cd3 +P9LY0tG+aI8IyVKdUjAJBgcqhkjOPQQBA0gAMEUCIGlsqMcRqWVIWTD6wXwe6Jk2 +DKxL46r/FLgJYnzBEH99AiEA3fBouObsvV1R3oVkb4BQYnD4/4LeId6lAT43YvyV +a/A= +-----END CERTIFICATE----- +` + +// Self-signed certificate using ECDSA with SHA256 & secp256r1 +var ecdsaSHA256p256CertPem = ` +-----BEGIN CERTIFICATE----- +MIICDzCCAbYCCQDlsuMWvgQzhTAKBggqhkjOPQQDAjCBjzELMAkGA1UEBhMCVVMx +EzARBgNVBAgMCkNhbGlmb3JuaWExFjAUBgNVBAcMDU1vdW50YWluIFZpZXcxFTAT +BgNVBAoMDEdvb2dsZSwgSW5jLjEXMBUGA1UEAwwOd3d3Lmdvb2dsZS5jb20xIzAh +BgkqhkiG9w0BCQEWFGdvbGFuZy1kZXZAZ21haWwuY29tMB4XDTEyMDUyMTAwMTkx +NloXDTIyMDUxOTAwMTkxNlowgY8xCzAJBgNVBAYTAlVTMRMwEQYDVQQIDApDYWxp +Zm9ybmlhMRYwFAYDVQQHDA1Nb3VudGFpbiBWaWV3MRUwEwYDVQQKDAxHb29nbGUs +IEluYy4xFzAVBgNVBAMMDnd3dy5nb29nbGUuY29tMSMwIQYJKoZIhvcNAQkBFhRn +b2xhbmctZGV2QGdtYWlsLmNvbTBZMBMGByqGSM49AgEGCCqGSM49AwEHA0IABPMt +2ErhxAty5EJRu9yM+MTy+hUXm3pdW1ensAv382KoGExSXAFWP7pjJnNtHO+XSwVm +YNtqjcAGFKpweoN//kQwCgYIKoZIzj0EAwIDRwAwRAIgIYSaUA/IB81gjbIw/hUV +70twxJr5EcgOo0hLp3Jm+EYCIFDO3NNcgmURbJ1kfoS3N/0O+irUtoPw38YoNkqJ +h5wi +-----END CERTIFICATE----- +` + +// Self-signed certificate using ECDSA with SHA256 & secp384r1 +var ecdsaSHA256p384CertPem = ` +-----BEGIN CERTIFICATE----- +MIICSjCCAdECCQDje/no7mXkVzAKBggqhkjOPQQDAjCBjjELMAkGA1UEBhMCVVMx +EzARBgNVBAgMCkNhbGlmb3JuaWExFjAUBgNVBAcMDU1vdW50YWluIFZpZXcxFDAS +BgNVBAoMC0dvb2dsZSwgSW5jMRcwFQYDVQQDDA53d3cuZ29vZ2xlLmNvbTEjMCEG +CSqGSIb3DQEJARYUZ29sYW5nLWRldkBnbWFpbC5jb20wHhcNMTIwNTIxMDYxMDM0 +WhcNMjIwNTE5MDYxMDM0WjCBjjELMAkGA1UEBhMCVVMxEzARBgNVBAgMCkNhbGlm +b3JuaWExFjAUBgNVBAcMDU1vdW50YWluIFZpZXcxFDASBgNVBAoMC0dvb2dsZSwg +SW5jMRcwFQYDVQQDDA53d3cuZ29vZ2xlLmNvbTEjMCEGCSqGSIb3DQEJARYUZ29s +YW5nLWRldkBnbWFpbC5jb20wdjAQBgcqhkjOPQIBBgUrgQQAIgNiAARRuzRNIKRK +jIktEmXanNmrTR/q/FaHXLhWRZ6nHWe26Fw7Rsrbk+VjGy4vfWtNn7xSFKrOu5ze +qxKnmE0h5E480MNgrUiRkaGO2GMJJVmxx20aqkXOk59U8yGA4CghE6MwCgYIKoZI +zj0EAwIDZwAwZAIwBZEN8gvmRmfeP/9C1PRLzODIY4JqWub2PLRT4mv9GU+yw3Gr +PU9A3CHMdEcdw/MEAjBBO1lId8KOCh9UZunsSMfqXiVurpzmhWd6VYZ/32G+M+Mh +3yILeYQzllt/g0rKVRk= +-----END CERTIFICATE----- +` + +// Self-signed certificate using ECDSA with SHA384 & secp521r1 +var ecdsaSHA384p521CertPem = ` +-----BEGIN CERTIFICATE----- +MIICljCCAfcCCQDhp1AFD/ahKjAKBggqhkjOPQQDAzCBjjELMAkGA1UEBhMCVVMx +EzARBgNVBAgMCkNhbGlmb3JuaWExFjAUBgNVBAcMDU1vdW50YWluIFZpZXcxFDAS +BgNVBAoMC0dvb2dsZSwgSW5jMRcwFQYDVQQDDA53d3cuZ29vZ2xlLmNvbTEjMCEG +CSqGSIb3DQEJARYUZ29sYW5nLWRldkBnbWFpbC5jb20wHhcNMTIwNTIxMTUwNDI5 +WhcNMjIwNTE5MTUwNDI5WjCBjjELMAkGA1UEBhMCVVMxEzARBgNVBAgMCkNhbGlm +b3JuaWExFjAUBgNVBAcMDU1vdW50YWluIFZpZXcxFDASBgNVBAoMC0dvb2dsZSwg +SW5jMRcwFQYDVQQDDA53d3cuZ29vZ2xlLmNvbTEjMCEGCSqGSIb3DQEJARYUZ29s +YW5nLWRldkBnbWFpbC5jb20wgZswEAYHKoZIzj0CAQYFK4EEACMDgYYABACqx9Rv +IssRs1LWYcNN+WffwlHw4Tv3y8/LIAA9MF1ZScIonU9nRMxt4a2uGJVCPDw6JHpz +PaYc0E9puLoE9AfKpwFr59Jkot7dBg55SKPEFkddoip/rvmN7NPAWjMBirOwjOkm +8FPthvPhGPqsu9AvgVuHu3PosWiHGNrhh379pva8MzAKBggqhkjOPQQDAwOBjAAw +gYgCQgEHNmswkUdPpHqrVxp9PvLVl+xxPuHBkT+75z9JizyxtqykHQo9Uh6SWCYH +BF9KLolo01wMt8DjoYP5Fb3j5MH7xwJCAbWZzTOp4l4DPkIvAh4LeC4VWbwPPyqh +kBg71w/iEcSY3wUKgHGcJJrObZw7wys91I5kENljqw/Samdr3ka+jBJa +-----END CERTIFICATE----- +` + +var ecdsaTests = []struct { + sigAlgo SignatureAlgorithm + pemCert string +}{ + {ECDSAWithSHA256, ecdsaSHA256p256CertPem}, + {ECDSAWithSHA256, ecdsaSHA256p384CertPem}, + {ECDSAWithSHA384, ecdsaSHA384p521CertPem}, +} + +func TestECDSA(t *testing.T) { + for i, test := range ecdsaTests { + pemBlock, _ := pem.Decode([]byte(test.pemCert)) + cert, err := ParseCertificate(pemBlock.Bytes) + if err != nil { + t.Errorf("%d: failed to parse certificate: %s", i, err) + continue + } + if sa := cert.SignatureAlgorithm; sa != test.sigAlgo { + t.Errorf("%d: signature algorithm is %v, want %v", i, sa, test.sigAlgo) + } + if parsedKey, ok := cert.PublicKey.(*ecdsa.PublicKey); !ok { + t.Errorf("%d: wanted an ECDSA public key but found: %#v", i, parsedKey) + } + if pka := cert.PublicKeyAlgorithm; pka != ECDSA { + t.Errorf("%d: public key algorithm is %v, want ECDSA", i, pka) + } + if err = cert.CheckSignatureFrom(cert); err != nil { + t.Errorf("%d: certificate verification failed: %s", i, err) + } + } +} + +// Self-signed certificate using DSA with SHA1 +var dsaCertPem = `-----BEGIN CERTIFICATE----- +MIIEDTCCA82gAwIBAgIJALHPghaoxeDhMAkGByqGSM44BAMweTELMAkGA1UEBhMC +VVMxCzAJBgNVBAgTAk5DMQ8wDQYDVQQHEwZOZXd0b24xFDASBgNVBAoTC0dvb2ds +ZSwgSW5jMRIwEAYDVQQDEwlKb24gQWxsaWUxIjAgBgkqhkiG9w0BCQEWE2pvbmFs +bGllQGdvb2dsZS5jb20wHhcNMTEwNTE0MDMwMTQ1WhcNMTEwNjEzMDMwMTQ1WjB5 +MQswCQYDVQQGEwJVUzELMAkGA1UECBMCTkMxDzANBgNVBAcTBk5ld3RvbjEUMBIG +A1UEChMLR29vZ2xlLCBJbmMxEjAQBgNVBAMTCUpvbiBBbGxpZTEiMCAGCSqGSIb3 +DQEJARYTam9uYWxsaWVAZ29vZ2xlLmNvbTCCAbcwggEsBgcqhkjOOAQBMIIBHwKB +gQC8hLUnQ7FpFYu4WXTj6DKvXvz8QrJkNJCVMTpKAT7uBpobk32S5RrPKXocd4gN +8lyGB9ggS03EVlEwXvSmO0DH2MQtke2jl9j1HLydClMf4sbx5V6TV9IFw505U1iW +jL7awRMgxge+FsudtJK254FjMFo03ZnOQ8ZJJ9E6AEDrlwIVAJpnBn9moyP11Ox5 +Asc/5dnjb6dPAoGBAJFHd4KVv1iTVCvEG6gGiYop5DJh28hUQcN9kul+2A0yPUSC +X93oN00P8Vh3eYgSaCWZsha7zDG53MrVJ0Zf6v/X/CoZNhLldeNOepivTRAzn+Rz +kKUYy5l1sxYLHQKF0UGNCXfFKZT0PCmgU+PWhYNBBMn6/cIh44vp85ideo5CA4GE +AAKBgFmifCafzeRaohYKXJgMGSEaggCVCRq5xdyDCat+wbOkjC4mfG01/um3G8u5 +LxasjlWRKTR/tcAL7t0QuokVyQaYdVypZXNaMtx1db7YBuHjj3aP+8JOQRI9xz8c +bp5NDJ5pISiFOv4p3GZfqZPcqckDt78AtkQrmnal2txhhjF6o4HeMIHbMB0GA1Ud +DgQWBBQVyyr7hO11ZFFpWX50298Sa3V+rzCBqwYDVR0jBIGjMIGggBQVyyr7hO11 +ZFFpWX50298Sa3V+r6F9pHsweTELMAkGA1UEBhMCVVMxCzAJBgNVBAgTAk5DMQ8w +DQYDVQQHEwZOZXd0b24xFDASBgNVBAoTC0dvb2dsZSwgSW5jMRIwEAYDVQQDEwlK +b24gQWxsaWUxIjAgBgkqhkiG9w0BCQEWE2pvbmFsbGllQGdvb2dsZS5jb22CCQCx +z4IWqMXg4TAMBgNVHRMEBTADAQH/MAkGByqGSM44BAMDLwAwLAIUPtn/5j8Q1jJI +7ggOIsgrhgUdjGQCFCsmDq1H11q9+9Wp9IMeGrTSKHIM +-----END CERTIFICATE----- +` + +func TestParseCertificateWithDsaPublicKey(t *testing.T) { + expectedKey := &dsa.PublicKey{ + Parameters: dsa.Parameters{ + P: bigFromHexString("00BC84B52743B169158BB85974E3E832AF5EFCFC42B264349095313A4A013EEE069A1B937D92E51ACF297A1C77880DF25C8607D8204B4DC45651305EF4A63B40C7D8C42D91EDA397D8F51CBC9D0A531FE2C6F1E55E9357D205C39D395358968CBEDAC11320C607BE16CB9DB492B6E78163305A34DD99CE43C64927D13A0040EB97"), + Q: bigFromHexString("009A67067F66A323F5D4EC7902C73FE5D9E36FA74F"), + G: bigFromHexString("009147778295BF5893542BC41BA806898A29E43261DBC85441C37D92E97ED80D323D44825FDDE8374D0FF15877798812682599B216BBCC31B9DCCAD527465FEAFFD7FC2A193612E575E34E7A98AF4D10339FE47390A518CB9975B3160B1D0285D1418D0977C52994F43C29A053E3D685834104C9FAFDC221E38BE9F3989D7A8E42"), + }, + Y: bigFromHexString("59A27C269FCDE45AA2160A5C980C19211A820095091AB9C5DC8309AB7EC1B3A48C2E267C6D35FEE9B71BCBB92F16AC8E559129347FB5C00BEEDD10BA8915C90698755CA965735A32DC7575BED806E1E38F768FFBC24E41123DC73F1C6E9E4D0C9E692128853AFE29DC665FA993DCA9C903B7BF00B6442B9A76A5DADC6186317A"), + } + pemBlock, _ := pem.Decode([]byte(dsaCertPem)) + cert, err := ParseCertificate(pemBlock.Bytes) + if err != nil { + t.Fatalf("Failed to parse certificate: %s", err) + } + if cert.PublicKeyAlgorithm != DSA { + t.Errorf("Parsed key algorithm was not DSA") + } + parsedKey, ok := cert.PublicKey.(*dsa.PublicKey) + if !ok { + t.Fatalf("Parsed key was not a DSA key: %s", err) + } + if expectedKey.Y.Cmp(parsedKey.Y) != 0 || + expectedKey.P.Cmp(parsedKey.P) != 0 || + expectedKey.Q.Cmp(parsedKey.Q) != 0 || + expectedKey.G.Cmp(parsedKey.G) != 0 { + t.Fatal("Parsed key differs from expected key") + } +} + +func TestParseCertificateWithDSASignatureAlgorithm(t *testing.T) { + pemBlock, _ := pem.Decode([]byte(dsaCertPem)) + cert, err := ParseCertificate(pemBlock.Bytes) + if err != nil { + t.Fatalf("Failed to parse certificate: %s", err) + } + if cert.SignatureAlgorithm != DSAWithSHA1 { + t.Errorf("Parsed signature algorithm was not DSAWithSHA1") + } +} + +func TestVerifyCertificateWithDSASignature(t *testing.T) { + pemBlock, _ := pem.Decode([]byte(dsaCertPem)) + cert, err := ParseCertificate(pemBlock.Bytes) + if err != nil { + t.Fatalf("Failed to parse certificate: %s", err) + } + // test cert is self-signed + if err = cert.CheckSignatureFrom(cert); err == nil { + t.Fatalf("Expected error verifying DSA certificate") + } +} + +var rsaPSSSelfSignedPEM = `-----BEGIN CERTIFICATE----- +MIIGHjCCA9KgAwIBAgIBdjBBBgkqhkiG9w0BAQowNKAPMA0GCWCGSAFlAwQCAQUA +oRwwGgYJKoZIhvcNAQEIMA0GCWCGSAFlAwQCAQUAogMCASAwbjELMAkGA1UEBhMC +SlAxHDAaBgNVBAoME0phcGFuZXNlIEdvdmVybm1lbnQxKDAmBgNVBAsMH1RoZSBN +aW5pc3RyeSBvZiBGb3JlaWduIEFmZmFpcnMxFzAVBgNVBAMMDmUtcGFzc3BvcnRD +U0NBMB4XDTEzMDUxNDA1MDczMFoXDTI5MDUxNDA1MDczMFowbjELMAkGA1UEBhMC +SlAxHDAaBgNVBAoME0phcGFuZXNlIEdvdmVybm1lbnQxKDAmBgNVBAsMH1RoZSBN +aW5pc3RyeSBvZiBGb3JlaWduIEFmZmFpcnMxFzAVBgNVBAMMDmUtcGFzc3BvcnRD +U0NBMIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEAx/E3WRVxcCDXhoST +8nVSLjW6hwM4Ni99AegWzcGtfGFo0zjFA1Cl5URqxauvYu3gQgQHBGA1CovWeGrl +yVSRzOL1imcYsSgLOcnhVYB3Xcrof4ebv9+W+TwNdc9YzAwcj8rNd5nP6PKXIQ+W +PCkEOXdyb80YEnxuT+NPjkVfFSPBS7QYZpvT2fwy4fZ0eh48253+7VleSmTO0mqj +7TlzaG56q150SLZbhpOd8jD8bM/wACnLCPR88wj4hCcDLEwoLyY85HJCTIQQMnoT +UpqyzEeupPREIm6yi4d8C9YqIWFn2YTnRcWcmMaJLzq+kYwKoudfnoC6RW2vzZXn +defQs68IZuK+uALu9G3JWGPgu0CQGj0JNDT8zkiDV++4eNrZczWKjr1YnAL+VbLK +bApwL2u19l2WDpfUklimhWfraqHNIUKU6CjZOG31RzXcplIj0mtqs0E1r7r357Es +yFoB28iNo4cz1lCulh0E4WJzWzLZcT4ZspHHRCFyvYnXoibXEV1nULq8ByKKG0FS +7nn4SseoV+8PvjHLPhmHGMvi4mxkbcXdV3wthHT1/HXdqY84A4xHWt1+sB/TpTek +tDhFlEfcUygvTu58UtOnysomOVVeERmi7WSujfzKsGJAJYeetiA5R+zX7BxeyFVE +qW0zh1Tkwh0S8LRe5diJh4+6FG0CAwEAAaNfMF0wHQYDVR0OBBYEFD+oahaikBTV +Urk81Uz7kRS2sx0aMA4GA1UdDwEB/wQEAwIBBjAYBgNVHSAEETAPMA0GCyqDCIaP +fgYFAQEBMBIGA1UdEwEB/wQIMAYBAf8CAQAwQQYJKoZIhvcNAQEKMDSgDzANBglg +hkgBZQMEAgEFAKEcMBoGCSqGSIb3DQEBCDANBglghkgBZQMEAgEFAKIDAgEgA4IC +AQAaxWBQn5CZuNBfyzL57mn31ukHUFd61OMROSX3PT7oCv1Dy+C2AdRlxOcbN3/n +li0yfXUUqiY3COlLAHKRlkr97mLtxEFoJ0R8nVN2IQdChNQM/XSCzSGyY8NVa1OR +TTpEWLnexJ9kvIdbFXwUqdTnAkOI0m7Rg8j+E+lRRHg1xDAA1qKttrtUj3HRQWf3 +kNTu628SiMvap6aIdncburaK56MP7gkR1Wr/ichOfjIA3Jgw2PapI31i0GqeMd66 +U1+lC9FeyMAJpuSVp/SoiYzYo+79SFcVoM2yw3yAnIKg7q9GLYYqzncdykT6C06c +15gWFI6igmReAsD9ITSvYh0jLrLHfEYcPTOD3ZXJ4EwwHtWSoO3gq1EAtOYKu/Lv +C8zfBsZcFdsHvsSiYeBU8Oioe42mguky3Ax9O7D805Ek6R68ra07MW/G4YxvV7IN +2BfSaYy8MX9IG0ZMIOcoc0FeF5xkFmJ7kdrlTaJzC0IE9PNxNaH5QnOAFB8vxHcO +FioUxb6UKdHcPLR1VZtAdTdTMjSJxUqD/35Cdfqs7oDJXz8f6TXO2Tdy6G++YUs9 +qsGZWxzFvvkXUkQSl0dQQ5jO/FtUJcAVXVVp20LxPemfatAHpW31WdJYeWSQWky2 ++f9b5TXKXVyjlUL7uHxowWrT2AtTchDH22wTEtqLEF9Z3Q== +-----END CERTIFICATE-----` + +// openssl req -newkey rsa:2048 -keyout test.key -sha256 -sigopt \ +// rsa_padding_mode:pss -sigopt rsa_pss_saltlen:32 -sigopt rsa_mgf1_md:sha256 \ +// -x509 -days 3650 -nodes -subj '/C=US/ST=CA/L=SF/O=Test/CN=Test' -out \ +// test.pem +var rsaPSSSelfSignedOpenSSL110PEM = `-----BEGIN CERTIFICATE----- +MIIDwDCCAnigAwIBAgIJAM9LAMHTE5xpMD0GCSqGSIb3DQEBCjAwoA0wCwYJYIZI +AWUDBAIBoRowGAYJKoZIhvcNAQEIMAsGCWCGSAFlAwQCAaIDAgEgMEUxCzAJBgNV +BAYTAlVTMQswCQYDVQQIDAJDQTELMAkGA1UEBwwCU0YxDTALBgNVBAoMBFRlc3Qx +DTALBgNVBAMMBFRlc3QwHhcNMTgwMjIyMjIxMzE4WhcNMjgwMjIwMjIxMzE4WjBF +MQswCQYDVQQGEwJVUzELMAkGA1UECAwCQ0ExCzAJBgNVBAcMAlNGMQ0wCwYDVQQK +DARUZXN0MQ0wCwYDVQQDDARUZXN0MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIB +CgKCAQEA4Zrsydod+GoTAJLLutWNF87qhhVPBsK1zB1Gj+NAAe4+VbrZ1E41H1wp +qITx7DA8DRtJEf+NqrTAnAdZWBG/tAOA5LfXVax0ZSQtLnYLSeylLoMtDyY3eFAj +TmuTOoyVy6raktowCnHCh01NsstqqTfrx6SbmzOmDmKTkq/I+7K0MCVsn41xRDVM ++ShD0WGFGioEGoiWnFSWupxJDA3Q6jIDEygVwNKHwnhv/2NgG2kqZzrZSQA67en0 +iKAXtoDNPpmyD5oS9YbEJ+2Nbm7oLeON30i6kZvXKIzJXx+UWViazHZqnsi5rQ8G +RHF+iVFXsqd0MzDKmkKOT5FDhrsbKQIDAQABo1MwUTAdBgNVHQ4EFgQU9uFY/nlg +gLH00NBnr/o7QvpN9ugwHwYDVR0jBBgwFoAU9uFY/nlggLH00NBnr/o7QvpN9ugw +DwYDVR0TAQH/BAUwAwEB/zA9BgkqhkiG9w0BAQowMKANMAsGCWCGSAFlAwQCAaEa +MBgGCSqGSIb3DQEBCDALBglghkgBZQMEAgGiAwIBIAOCAQEAhJzpwxBNGKvzKWDe +WLqv6RMrl/q4GcH3b7M9wjxe0yOm4F+Tb2zJ7re4h+D39YkJf8cX1NV9UQVu6z4s +Fvo2kmlR0qZOXAg5augmCQ1xS0WHFoF6B52anNzHkZQbAIYJ3kGoFsUHzs7Sz7F/ +656FsRpHA9UzJQ3avPPMrA4Y4aoJ7ANJ6XIwTrdWrhULOVuvYRLCl4CdTVztVFX6 +wxX8nS1ISYd8jXPUMgsBKVbWufvLoIymMJW8CZbpprVZel5zFn0bmPrON8IHS30w +Gs+ITJjKEnZgXmAQ25SLKVzkZkBcGANs2GsdHNJ370Puisy0FIPD2NXR5uASAf7J ++w9fjQ== +-----END CERTIFICATE-----` + +func TestRSAPSSSelfSigned(t *testing.T) { + for i, pemBlock := range []string{rsaPSSSelfSignedPEM, rsaPSSSelfSignedOpenSSL110PEM} { + der, _ := pem.Decode([]byte(pemBlock)) + if der == nil { + t.Errorf("#%d: failed to find PEM block", i) + continue + } + + cert, err := ParseCertificate(der.Bytes) + if err != nil { + t.Errorf("#%d: failed to parse: %s", i, err) + continue + } + + if err = cert.CheckSignatureFrom(cert); err != nil { + t.Errorf("#%d: signature check failed: %s", i, err) + continue + } + } +} + +const ed25519Certificate = ` +Certificate: + Data: + Version: 3 (0x2) + Serial Number: + 0c:83:d8:21:2b:82:cb:23:98:23:63:e2:f7:97:8a:43:5b:f3:bd:92 + Signature Algorithm: ED25519 + Issuer: CN = Ed25519 test certificate + Validity + Not Before: May 6 17:27:16 2019 GMT + Not After : Jun 5 17:27:16 2019 GMT + Subject: CN = Ed25519 test certificate + Subject Public Key Info: + Public Key Algorithm: ED25519 + ED25519 Public-Key: + pub: + 36:29:c5:6c:0d:4f:14:6c:81:d0:ff:75:d3:6a:70: + 5f:69:cd:0f:4d:66:d5:da:98:7e:82:49:89:a3:8a: + 3c:fa + X509v3 extensions: + X509v3 Subject Key Identifier: + 09:3B:3A:9D:4A:29:D8:95:FF:68:BE:7B:43:54:72:E0:AD:A2:E3:AE + X509v3 Authority Key Identifier: + keyid:09:3B:3A:9D:4A:29:D8:95:FF:68:BE:7B:43:54:72:E0:AD:A2:E3:AE + + X509v3 Basic Constraints: critical + CA:TRUE + Signature Algorithm: ED25519 + 53:a5:58:1c:2c:3b:2a:9e:ac:9d:4e:a5:1d:5f:5d:6d:a6:b5: + 08:de:12:82:f3:97:20:ae:fa:d8:98:f4:1a:83:32:6b:91:f5: + 24:1d:c4:20:7f:2c:e2:4d:da:13:3b:6d:54:1a:d2:a8:28:dc: + 60:b9:d4:f4:78:4b:3c:1c:91:00 +-----BEGIN CERTIFICATE----- +MIIBWzCCAQ2gAwIBAgIUDIPYISuCyyOYI2Pi95eKQ1vzvZIwBQYDK2VwMCMxITAf +BgNVBAMMGEVkMjU1MTkgdGVzdCBjZXJ0aWZpY2F0ZTAeFw0xOTA1MDYxNzI3MTZa +Fw0xOTA2MDUxNzI3MTZaMCMxITAfBgNVBAMMGEVkMjU1MTkgdGVzdCBjZXJ0aWZp +Y2F0ZTAqMAUGAytlcAMhADYpxWwNTxRsgdD/ddNqcF9pzQ9NZtXamH6CSYmjijz6 +o1MwUTAdBgNVHQ4EFgQUCTs6nUop2JX/aL57Q1Ry4K2i464wHwYDVR0jBBgwFoAU +CTs6nUop2JX/aL57Q1Ry4K2i464wDwYDVR0TAQH/BAUwAwEB/zAFBgMrZXADQQBT +pVgcLDsqnqydTqUdX11tprUI3hKC85cgrvrYmPQagzJrkfUkHcQgfyziTdoTO21U +GtKoKNxgudT0eEs8HJEA +-----END CERTIFICATE-----` + +func TestEd25519SelfSigned(t *testing.T) { + der, _ := pem.Decode([]byte(ed25519Certificate)) + if der == nil { + t.Fatalf("Failed to find PEM block") + } + + cert, err := ParseCertificate(der.Bytes) + if err != nil { + t.Fatalf("Failed to parse: %s", err) + } + + if cert.PublicKeyAlgorithm != Ed25519 { + t.Fatalf("Parsed key algorithm was not Ed25519") + } + parsedKey, ok := cert.PublicKey.(ed25519.PublicKey) + if !ok { + t.Fatalf("Parsed key was not an Ed25519 key: %s", err) + } + if len(parsedKey) != ed25519.PublicKeySize { + t.Fatalf("Invalid Ed25519 key") + } + + if err = cert.CheckSignatureFrom(cert); err != nil { + t.Fatalf("Signature check failed: %s", err) + } +} + +const pemCertificate = `-----BEGIN CERTIFICATE----- +MIIDATCCAemgAwIBAgIRAKQkkrFx1T/dgB/Go/xBM5swDQYJKoZIhvcNAQELBQAw +EjEQMA4GA1UEChMHQWNtZSBDbzAeFw0xNjA4MTcyMDM2MDdaFw0xNzA4MTcyMDM2 +MDdaMBIxEDAOBgNVBAoTB0FjbWUgQ28wggEiMA0GCSqGSIb3DQEBAQUAA4IBDwAw +ggEKAoIBAQDAoJtjG7M6InsWwIo+l3qq9u+g2rKFXNu9/mZ24XQ8XhV6PUR+5HQ4 +jUFWC58ExYhottqK5zQtKGkw5NuhjowFUgWB/VlNGAUBHtJcWR/062wYrHBYRxJH +qVXOpYKbIWwFKoXu3hcpg/CkdOlDWGKoZKBCwQwUBhWE7MDhpVdQ+ZljUJWL+FlK +yQK5iRsJd5TGJ6VUzLzdT4fmN2DzeK6GLeyMpVpU3sWV90JJbxWQ4YrzkKzYhMmB +EcpXTG2wm+ujiHU/k2p8zlf8Sm7VBM/scmnMFt0ynNXop4FWvJzEm1G0xD2t+e2I +5Utr04dOZPCgkm++QJgYhtZvgW7ZZiGTAgMBAAGjUjBQMA4GA1UdDwEB/wQEAwIF +oDATBgNVHSUEDDAKBggrBgEFBQcDATAMBgNVHRMBAf8EAjAAMBsGA1UdEQQUMBKC +EHRlc3QuZXhhbXBsZS5jb20wDQYJKoZIhvcNAQELBQADggEBADpqKQxrthH5InC7 +X96UP0OJCu/lLEMkrjoEWYIQaFl7uLPxKH5AmQPH4lYwF7u7gksR7owVG9QU9fs6 +1fK7II9CVgCd/4tZ0zm98FmU4D0lHGtPARrrzoZaqVZcAvRnFTlPX5pFkPhVjjai +/mkxX9LpD8oK1445DFHxK5UjLMmPIIWd8EOi+v5a+hgGwnJpoW7hntSl8kHMtTmy +fnnktsblSUV4lRCit0ymC7Ojhe+gzCCwkgs5kDzVVag+tnl/0e2DloIjASwOhpbH +KVcg7fBd484ht/sS+l0dsB4KDOSpd8JzVDMF8OZqlaydizoJO0yWr9GbCN1+OKq5 +EhLrEqU= +-----END CERTIFICATE-----` + +const ed25519CRLCertificate = ` +Certificate: +Data: + Version: 3 (0x2) + Serial Number: + 7a:07:a0:9d:14:04:16:fc:1f:d8:e5:fe:d1:1d:1f:8d + Signature Algorithm: ED25519 + Issuer: CN = Ed25519 CRL Test CA + Validity + Not Before: Oct 30 01:20:20 2019 GMT + Not After : Dec 31 23:59:59 9999 GMT + Subject: CN = Ed25519 CRL Test CA + Subject Public Key Info: + Public Key Algorithm: ED25519 + ED25519 Public-Key: + pub: + 95:73:3b:b0:06:2a:31:5a:b6:a7:a6:6e:ef:71:df: + ac:6f:6b:39:03:85:5e:63:4b:f8:a6:0f:68:c6:6f: + 75:21 + X509v3 extensions: + X509v3 Key Usage: critical + Digital Signature, Certificate Sign, CRL Sign + X509v3 Extended Key Usage: + TLS Web Client Authentication, TLS Web Server Authentication, OCSP Signing + X509v3 Basic Constraints: critical + CA:TRUE + X509v3 Subject Key Identifier: + B7:17:DA:16:EA:C5:ED:1F:18:49:44:D3:D2:E3:A0:35:0A:81:93:60 + X509v3 Authority Key Identifier: + keyid:B7:17:DA:16:EA:C5:ED:1F:18:49:44:D3:D2:E3:A0:35:0A:81:93:60 + +Signature Algorithm: ED25519 + fc:3e:14:ea:bb:70:c2:6f:38:34:70:bc:c8:a7:f4:7c:0d:1e: + 28:d7:2a:9f:22:8a:45:e8:02:76:84:1e:2d:64:2d:1e:09:b5: + 29:71:1f:95:8a:4e:79:87:51:60:9a:e7:86:40:f6:60:c7:d1: + ee:68:76:17:1d:90:cc:92:93:07 +-----BEGIN CERTIFICATE----- +MIIBijCCATygAwIBAgIQegegnRQEFvwf2OX+0R0fjTAFBgMrZXAwHjEcMBoGA1UE +AxMTRWQyNTUxOSBDUkwgVGVzdCBDQTAgFw0xOTEwMzAwMTIwMjBaGA85OTk5MTIz +MTIzNTk1OVowHjEcMBoGA1UEAxMTRWQyNTUxOSBDUkwgVGVzdCBDQTAqMAUGAytl +cAMhAJVzO7AGKjFatqembu9x36xvazkDhV5jS/imD2jGb3Uho4GNMIGKMA4GA1Ud +DwEB/wQEAwIBhjAnBgNVHSUEIDAeBggrBgEFBQcDAgYIKwYBBQUHAwEGCCsGAQUF +BwMJMA8GA1UdEwEB/wQFMAMBAf8wHQYDVR0OBBYEFLcX2hbqxe0fGElE09LjoDUK +gZNgMB8GA1UdIwQYMBaAFLcX2hbqxe0fGElE09LjoDUKgZNgMAUGAytlcANBAPw+ +FOq7cMJvODRwvMin9HwNHijXKp8iikXoAnaEHi1kLR4JtSlxH5WKTnmHUWCa54ZA +9mDH0e5odhcdkMySkwc= +-----END CERTIFICATE-----` + +var ed25519CRLKey = testingKey(`-----BEGIN TEST KEY----- +MC4CAQAwBQYDK2VwBCIEINdKh2096vUBYu4EIFpjShsUSh3vimKya1sQ1YTT4RZG +-----END TEST KEY-----`) + +func TestCRLCreation(t *testing.T) { + block, _ := pem.Decode([]byte(pemPrivateKey)) + privRSA, _ := ParsePKCS1PrivateKey(block.Bytes) + block, _ = pem.Decode([]byte(pemCertificate)) + certRSA, _ := ParseCertificate(block.Bytes) + + block, _ = pem.Decode([]byte(ed25519CRLKey)) + privEd25519, _ := ParsePKCS8PrivateKey(block.Bytes) + block, _ = pem.Decode([]byte(ed25519CRLCertificate)) + certEd25519, _ := ParseCertificate(block.Bytes) + + tests := []struct { + name string + priv any + cert *Certificate + }{ + {"RSA CA", privRSA, certRSA}, + {"Ed25519 CA", privEd25519, certEd25519}, + } + + loc := time.FixedZone("Oz/Atlantis", int((2 * time.Hour).Seconds())) + + now := time.Unix(1000, 0).In(loc) + nowUTC := now.UTC() + expiry := time.Unix(10000, 0) + + revokedCerts := []pkix.RevokedCertificate{ + { + SerialNumber: big.NewInt(1), + RevocationTime: nowUTC, + }, + { + SerialNumber: big.NewInt(42), + // RevocationTime should be converted to UTC before marshaling. + RevocationTime: now, + }, + } + expectedCerts := []pkix.RevokedCertificate{ + { + SerialNumber: big.NewInt(1), + RevocationTime: nowUTC, + }, + { + SerialNumber: big.NewInt(42), + RevocationTime: nowUTC, + }, + } + + for _, test := range tests { + crlBytes, err := test.cert.CreateCRL(rand.Reader, test.priv, revokedCerts, now, expiry) + if err != nil { + t.Errorf("%s: error creating CRL: %s", test.name, err) + } + + parsedCRL, err := ParseDERCRL(crlBytes) + if err != nil { + t.Errorf("%s: error reparsing CRL: %s", test.name, err) + } + if !reflect.DeepEqual(parsedCRL.TBSCertList.RevokedCertificates, expectedCerts) { + t.Errorf("%s: RevokedCertificates mismatch: got %v; want %v.", test.name, + parsedCRL.TBSCertList.RevokedCertificates, expectedCerts) + } + } +} + +func fromBase64(in string) []byte { + out := make([]byte, base64.StdEncoding.DecodedLen(len(in))) + n, err := base64.StdEncoding.Decode(out, []byte(in)) + if err != nil { + panic("failed to base64 decode") + } + return out[:n] +} + +func TestParseDERCRL(t *testing.T) { + derBytes := fromBase64(derCRLBase64) + certList, err := ParseDERCRL(derBytes) + if err != nil { + t.Errorf("error parsing: %s", err) + return + } + numCerts := len(certList.TBSCertList.RevokedCertificates) + expected := 88 + if numCerts != expected { + t.Errorf("bad number of revoked certificates. got: %d want: %d", numCerts, expected) + } + + if certList.HasExpired(time.Unix(1302517272, 0)) { + t.Errorf("CRL has expired (but shouldn't have)") + } + + // Can't check the signature here without a package cycle. +} + +func TestCRLWithoutExpiry(t *testing.T) { + derBytes := fromBase64("MIHYMIGZMAkGByqGSM44BAMwEjEQMA4GA1UEAxMHQ2FybERTUxcNOTkwODI3MDcwMDAwWjBpMBMCAgDIFw05OTA4MjIwNzAwMDBaMBMCAgDJFw05OTA4MjIwNzAwMDBaMBMCAgDTFw05OTA4MjIwNzAwMDBaMBMCAgDSFw05OTA4MjIwNzAwMDBaMBMCAgDUFw05OTA4MjQwNzAwMDBaMAkGByqGSM44BAMDLwAwLAIUfmVSdjP+NHMX0feW+aDU2G1cfT0CFAJ6W7fVWxjBz4fvftok8yqDnDWh") + certList, err := ParseDERCRL(derBytes) + if err != nil { + t.Fatal(err) + } + if !certList.TBSCertList.NextUpdate.IsZero() { + t.Errorf("NextUpdate is not the zero value") + } +} + +func TestParsePEMCRL(t *testing.T) { + pemBytes := fromBase64(pemCRLBase64) + certList, err := ParseCRL(pemBytes) + if err != nil { + t.Errorf("error parsing: %s", err) + return + } + numCerts := len(certList.TBSCertList.RevokedCertificates) + expected := 2 + if numCerts != expected { + t.Errorf("bad number of revoked certificates. got: %d want: %d", numCerts, expected) + } + + if certList.HasExpired(time.Unix(1302517272, 0)) { + t.Errorf("CRL has expired (but shouldn't have)") + } + + // Can't check the signature here without a package cycle. +} + +func TestImports(t *testing.T) { + if testing.Short() { + t.Skip("skipping in -short mode") + } + testenv.MustHaveGoRun(t) + + if out, err := exec.Command(testenv.GoToolPath(t), "run", "x509_test_import.go").CombinedOutput(); err != nil { + t.Errorf("failed to run x509_test_import.go: %s\n%s", err, out) + } +} + +const derCRLBase64 = "MIINqzCCDJMCAQEwDQYJKoZIhvcNAQEFBQAwVjEZMBcGA1UEAxMQUEtJIEZJTk1FQ0NBTklDQTEVMBMGA1UEChMMRklOTUVDQ0FOSUNBMRUwEwYDVQQLEwxGSU5NRUNDQU5JQ0ExCzAJBgNVBAYTAklUFw0xMTA1MDQxNjU3NDJaFw0xMTA1MDQyMDU3NDJaMIIMBzAhAg4Ze1od49Lt1qIXBydAzhcNMDkwNzE2MDg0MzIyWjAAMCECDl0HSL9bcZ1Ci/UHJ0DPFw0wOTA3MTYwODQzMTNaMAAwIQIOESB9tVAmX3cY7QcnQNAXDTA5MDcxNjA4NDUyMlowADAhAg4S1tGAQ3mHt8uVBydA1RcNMDkwODA0MTUyNTIyWjAAMCECDlQ249Y7vtC25ScHJ0DWFw0wOTA4MDQxNTI1MzdaMAAwIQIOISMop3NkA4PfYwcnQNkXDTA5MDgwNDExMDAzNFowADAhAg56/BMoS29KEShTBydA2hcNMDkwODA0MTEwMTAzWjAAMCECDnBp/22HPH5CSWoHJ0DbFw0wOTA4MDQxMDU0NDlaMAAwIQIOV9IP+8CD8bK+XAcnQNwXDTA5MDgwNDEwNTcxN1owADAhAg4v5aRz0IxWqYiXBydA3RcNMDkwODA0MTA1NzQ1WjAAMCECDlOU34VzvZAybQwHJ0DeFw0wOTA4MDQxMDU4MjFaMAAwIAINO4CD9lluIxcwBydBAxcNMDkwNzIyMTUzMTU5WjAAMCECDgOllfO8Y1QA7/wHJ0ExFw0wOTA3MjQxMTQxNDNaMAAwIQIOJBX7jbiCdRdyjgcnQUQXDTA5MDkxNjA5MzAwOFowADAhAg5iYSAgmDrlH/RZBydBRRcNMDkwOTE2MDkzMDE3WjAAMCECDmu6k6srP3jcMaQHJ0FRFw0wOTA4MDQxMDU2NDBaMAAwIQIOX8aHlO0V+WVH4QcnQVMXDTA5MDgwNDEwNTcyOVowADAhAg5flK2rg3NnsRgDBydBzhcNMTEwMjAxMTUzMzQ2WjAAMCECDg35yJDL1jOPTgoHJ0HPFw0xMTAyMDExNTM0MjZaMAAwIQIOMyFJ6+e9iiGVBQcnQdAXDTA5MDkxODEzMjAwNVowADAhAg5Emb/Oykucmn8fBydB1xcNMDkwOTIxMTAxMDQ3WjAAMCECDjQKCncV+MnUavMHJ0HaFw0wOTA5MjIwODE1MjZaMAAwIQIOaxiFUt3dpd+tPwcnQfQXDTEwMDYxODA4NDI1MVowADAhAg5G7P8nO0tkrMt7BydB9RcNMTAwNjE4MDg0MjMwWjAAMCECDmTCC3SXhmDRst4HJ0H2Fw0wOTA5MjgxMjA3MjBaMAAwIQIOHoGhUr/pRwzTKgcnQfcXDTA5MDkyODEyMDcyNFowADAhAg50wrcrCiw8mQmPBydCBBcNMTAwMjE2MTMwMTA2WjAAMCECDifWmkvwyhEqwEcHJ0IFFw0xMDAyMTYxMzAxMjBaMAAwIQIOfgPmlW9fg+osNgcnQhwXDTEwMDQxMzA5NTIwMFowADAhAg4YHAGuA6LgCk7tBydCHRcNMTAwNDEzMDk1MTM4WjAAMCECDi1zH1bxkNJhokAHJ0IsFw0xMDA0MTMwOTU5MzBaMAAwIQIOMipNccsb/wo2fwcnQi0XDTEwMDQxMzA5NTkwMFowADAhAg46lCmvPl4GpP6ABydCShcNMTAwMTE5MDk1MjE3WjAAMCECDjaTcaj+wBpcGAsHJ0JLFw0xMDAxMTkwOTUyMzRaMAAwIQIOOMC13EOrBuxIOQcnQloXDTEwMDIwMTA5NDcwNVowADAhAg5KmZl+krz4RsmrBydCWxcNMTAwMjAxMDk0NjQwWjAAMCECDmLG3zQJ/fzdSsUHJ0JiFw0xMDAzMDEwOTUxNDBaMAAwIQIOP39ksgHdojf4owcnQmMXDTEwMDMwMTA5NTExN1owADAhAg4LDQzvWNRlD6v9BydCZBcNMTAwMzAxMDk0NjIyWjAAMCECDkmNfeclaFhIaaUHJ0JlFw0xMDAzMDEwOTQ2MDVaMAAwIQIOT/qWWfpH/m8NTwcnQpQXDTEwMDUxMTA5MTgyMVowADAhAg5m/ksYxvCEgJSvBydClRcNMTAwNTExMDkxODAxWjAAMCECDgvf3Ohq6JOPU9AHJ0KWFw0xMDA1MTEwOTIxMjNaMAAwIQIOKSPas10z4jNVIQcnQpcXDTEwMDUxMTA5MjEwMlowADAhAg4mCWmhoZ3lyKCDBydCohcNMTEwNDI4MTEwMjI1WjAAMCECDkeiyRsBMK0Gvr4HJ0KjFw0xMTA0MjgxMTAyMDdaMAAwIQIOa09b/nH2+55SSwcnQq4XDTExMDQwMTA4Mjk0NlowADAhAg5O7M7iq7gGplr1BydCrxcNMTEwNDAxMDgzMDE3WjAAMCECDjlT6mJxUjTvyogHJ0K1Fw0xMTAxMjcxNTQ4NTJaMAAwIQIODS/l4UUFLe21NAcnQrYXDTExMDEyNzE1NDgyOFowADAhAg5lPRA0XdOUF6lSBydDHhcNMTEwMTI4MTQzNTA1WjAAMCECDixKX4fFGGpENwgHJ0MfFw0xMTAxMjgxNDM1MzBaMAAwIQIORNBkqsPnpKTtbAcnQ08XDTEwMDkwOTA4NDg0MlowADAhAg5QL+EMM3lohedEBydDUBcNMTAwOTA5MDg0ODE5WjAAMCECDlhDnHK+HiTRAXcHJ0NUFw0xMDEwMTkxNjIxNDBaMAAwIQIOdBFqAzq/INz53gcnQ1UXDTEwMTAxOTE2MjA0NFowADAhAg4OjR7s8MgKles1BydDWhcNMTEwMTI3MTY1MzM2WjAAMCECDmfR/elHee+d0SoHJ0NbFw0xMTAxMjcxNjUzNTZaMAAwIQIOBTKv2ui+KFMI+wcnQ5YXDTEwMDkxNTEwMjE1N1owADAhAg49F3c/GSah+oRUBydDmxcNMTEwMTI3MTczMjMzWjAAMCECDggv4I61WwpKFMMHJ0OcFw0xMTAxMjcxNzMyNTVaMAAwIQIOXx/Y8sEvwS10LAcnQ6UXDTExMDEyODExMjkzN1owADAhAg5LSLbnVrSKaw/9BydDphcNMTEwMTI4MTEyOTIwWjAAMCECDmFFoCuhKUeACQQHJ0PfFw0xMTAxMTExMDE3MzdaMAAwIQIOQTDdFh2fSPF6AAcnQ+AXDTExMDExMTEwMTcxMFowADAhAg5B8AOXX61FpvbbBydD5RcNMTAxMDA2MTAxNDM2WjAAMCECDh41P2Gmi7PkwI4HJ0PmFw0xMDEwMDYxMDE2MjVaMAAwIQIOWUHGLQCd+Ale9gcnQ/0XDTExMDUwMjA3NTYxMFowADAhAg5Z2c9AYkikmgWOBydD/hcNMTEwNTAyMDc1NjM0WjAAMCECDmf/UD+/h8nf+74HJ0QVFw0xMTA0MTUwNzI4MzNaMAAwIQIOICvj4epy3MrqfwcnRBYXDTExMDQxNTA3Mjg1NlowADAhAg4bouRMfOYqgv4xBydEHxcNMTEwMzA4MTYyNDI1WjAAMCECDhebWHGoKiTp7pEHJ0QgFw0xMTAzMDgxNjI0NDhaMAAwIQIOX+qnxxAqJ8LtawcnRDcXDTExMDEzMTE1MTIyOFowADAhAg4j0fICqZ+wkOdqBydEOBcNMTEwMTMxMTUxMTQxWjAAMCECDhmXjsV4SUpWtAMHJ0RLFw0xMTAxMjgxMTI0MTJaMAAwIQIODno/w+zG43kkTwcnREwXDTExMDEyODExMjM1MlowADAhAg4b1gc88767Fr+LBydETxcNMTEwMTI4MTEwMjA4WjAAMCECDn+M3Pa1w2nyFeUHJ0RQFw0xMTAxMjgxMDU4NDVaMAAwIQIOaduoyIH61tqybAcnRJUXDTEwMTIxNTA5NDMyMlowADAhAg4nLqQPkyi3ESAKBydElhcNMTAxMjE1MDk0MzM2WjAAMCECDi504NIMH8578gQHJ0SbFw0xMTAyMTQxNDA1NDFaMAAwIQIOGuaM8PDaC5u1egcnRJwXDTExMDIxNDE0MDYwNFowADAhAg4ehYq/BXGnB5PWBydEnxcNMTEwMjA0MDgwOTUxWjAAMCECDkSD4eS4FxW5H20HJ0SgFw0xMTAyMDQwODA5MjVaMAAwIQIOOCcb6ilYObt1egcnRKEXDTExMDEyNjEwNDEyOVowADAhAg58tISWCCwFnKGnBydEohcNMTEwMjA0MDgxMzQyWjAAMCECDn5rjtabY/L/WL0HJ0TJFw0xMTAyMDQxMTAzNDFaMAAwDQYJKoZIhvcNAQEFBQADggEBAGnF2Gs0+LNiYCW1Ipm83OXQYP/bd5tFFRzyz3iepFqNfYs4D68/QihjFoRHQoXEB0OEe1tvaVnnPGnEOpi6krwekquMxo4H88B5SlyiFIqemCOIss0SxlCFs69LmfRYvPPvPEhoXtQ3ZThe0UvKG83GOklhvGl6OaiRf4Mt+m8zOT4Wox/j6aOBK6cw6qKCdmD+Yj1rrNqFGg1CnSWMoD6S6mwNgkzwdBUJZ22BwrzAAo4RHa2Uy3ef1FjwD0XtU5N3uDSxGGBEDvOe5z82rps3E22FpAA8eYl8kaXtmWqyvYU0epp4brGuTxCuBMCAsxt/OjIjeNNQbBGkwxgfYA0=" + +const pemCRLBase64 = "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" + +func TestCreateCertificateRequest(t *testing.T) { + random := rand.Reader + + ecdsa256Priv, err := ecdsa.GenerateKey(elliptic.P256(), rand.Reader) + if err != nil { + t.Fatalf("Failed to generate ECDSA key: %s", err) + } + + ecdsa384Priv, err := ecdsa.GenerateKey(elliptic.P384(), rand.Reader) + if err != nil { + t.Fatalf("Failed to generate ECDSA key: %s", err) + } + + ecdsa521Priv, err := ecdsa.GenerateKey(elliptic.P521(), rand.Reader) + if err != nil { + t.Fatalf("Failed to generate ECDSA key: %s", err) + } + + _, ed25519Priv, err := ed25519.GenerateKey(random) + if err != nil { + t.Fatalf("Failed to generate Ed25519 key: %s", err) + } + + tests := []struct { + name string + priv any + sigAlgo SignatureAlgorithm + }{ + {"RSA", testPrivateKey, SHA256WithRSA}, + {"ECDSA-256", ecdsa256Priv, ECDSAWithSHA256}, + {"ECDSA-384", ecdsa384Priv, ECDSAWithSHA256}, + {"ECDSA-521", ecdsa521Priv, ECDSAWithSHA256}, + {"Ed25519", ed25519Priv, PureEd25519}, + } + + for _, test := range tests { + template := CertificateRequest{ + Subject: pkix.Name{ + CommonName: "test.example.com", + Organization: []string{"Σ Acme Co"}, + }, + SignatureAlgorithm: test.sigAlgo, + DNSNames: []string{"test.example.com"}, + EmailAddresses: []string{"gopher@golang.org"}, + IPAddresses: []net.IP{net.IPv4(127, 0, 0, 1).To4(), net.ParseIP("2001:4860:0:2001::68")}, + } + + derBytes, err := CreateCertificateRequest(random, &template, test.priv) + if err != nil { + t.Errorf("%s: failed to create certificate request: %s", test.name, err) + continue + } + + out, err := ParseCertificateRequest(derBytes) + if err != nil { + t.Errorf("%s: failed to create certificate request: %s", test.name, err) + continue + } + + err = out.CheckSignature() + if err != nil { + t.Errorf("%s: failed to check certificate request signature: %s", test.name, err) + continue + } + + if out.Subject.CommonName != template.Subject.CommonName { + t.Errorf("%s: output subject common name and template subject common name don't match", test.name) + } else if len(out.Subject.Organization) != len(template.Subject.Organization) { + t.Errorf("%s: output subject organisation and template subject organisation don't match", test.name) + } else if len(out.DNSNames) != len(template.DNSNames) { + t.Errorf("%s: output DNS names and template DNS names don't match", test.name) + } else if len(out.EmailAddresses) != len(template.EmailAddresses) { + t.Errorf("%s: output email addresses and template email addresses don't match", test.name) + } else if len(out.IPAddresses) != len(template.IPAddresses) { + t.Errorf("%s: output IP addresses and template IP addresses names don't match", test.name) + } + } +} + +func marshalAndParseCSR(t *testing.T, template *CertificateRequest) *CertificateRequest { + derBytes, err := CreateCertificateRequest(rand.Reader, template, testPrivateKey) + if err != nil { + t.Fatal(err) + } + + csr, err := ParseCertificateRequest(derBytes) + if err != nil { + t.Fatal(err) + } + + return csr +} + +func TestCertificateRequestOverrides(t *testing.T) { + sanContents, err := marshalSANs([]string{"foo.example.com"}, nil, nil, nil) + if err != nil { + t.Fatal(err) + } + + template := CertificateRequest{ + Subject: pkix.Name{ + CommonName: "test.example.com", + Organization: []string{"Σ Acme Co"}, + }, + DNSNames: []string{"test.example.com"}, + + // An explicit extension should override the DNSNames from the + // template. + ExtraExtensions: []pkix.Extension{ + { + Id: oidExtensionSubjectAltName, + Value: sanContents, + Critical: true, + }, + }, + } + + csr := marshalAndParseCSR(t, &template) + + if len(csr.DNSNames) != 1 || csr.DNSNames[0] != "foo.example.com" { + t.Errorf("Extension did not override template. Got %v\n", csr.DNSNames) + } + + if len(csr.Extensions) != 1 || !csr.Extensions[0].Id.Equal(oidExtensionSubjectAltName) || !csr.Extensions[0].Critical { + t.Errorf("SAN extension was not faithfully copied, got %#v", csr.Extensions) + } + + // If there is already an attribute with X.509 extensions then the + // extra extensions should be added to it rather than creating a CSR + // with two extension attributes. + + template.Attributes = []pkix.AttributeTypeAndValueSET{ + { + Type: oidExtensionRequest, + Value: [][]pkix.AttributeTypeAndValue{ + { + { + Type: oidExtensionAuthorityInfoAccess, + Value: []byte("foo"), + }, + }, + }, + }, + } + + csr = marshalAndParseCSR(t, &template) + if l := len(csr.Attributes); l != 1 { + t.Errorf("incorrect number of attributes: %d\n", l) + } + + if !csr.Attributes[0].Type.Equal(oidExtensionRequest) || + len(csr.Attributes[0].Value) != 1 || + len(csr.Attributes[0].Value[0]) != 2 { + t.Errorf("bad attributes: %#v\n", csr.Attributes) + } + + sanContents2, err := marshalSANs([]string{"foo2.example.com"}, nil, nil, nil) + if err != nil { + t.Fatal(err) + } + + // Extensions in Attributes should override those in ExtraExtensions. + template.Attributes[0].Value[0] = append(template.Attributes[0].Value[0], pkix.AttributeTypeAndValue{ + Type: oidExtensionSubjectAltName, + Value: sanContents2, + }) + + csr = marshalAndParseCSR(t, &template) + + if len(csr.DNSNames) != 1 || csr.DNSNames[0] != "foo2.example.com" { + t.Errorf("Attributes did not override ExtraExtensions. Got %v\n", csr.DNSNames) + } +} + +func TestParseCertificateRequest(t *testing.T) { + for _, csrBase64 := range csrBase64Array { + csrBytes := fromBase64(csrBase64) + csr, err := ParseCertificateRequest(csrBytes) + if err != nil { + t.Fatalf("failed to parse CSR: %s", err) + } + + if len(csr.EmailAddresses) != 1 || csr.EmailAddresses[0] != "gopher@golang.org" { + t.Errorf("incorrect email addresses found: %v", csr.EmailAddresses) + } + + if len(csr.DNSNames) != 1 || csr.DNSNames[0] != "test.example.com" { + t.Errorf("incorrect DNS names found: %v", csr.DNSNames) + } + + if len(csr.Subject.Country) != 1 || csr.Subject.Country[0] != "AU" { + t.Errorf("incorrect Subject name: %v", csr.Subject) + } + + found := false + for _, e := range csr.Extensions { + if e.Id.Equal(oidExtensionBasicConstraints) { + found = true + break + } + } + if !found { + t.Errorf("basic constraints extension not found in CSR") + } + } +} + +func TestCriticalFlagInCSRRequestedExtensions(t *testing.T) { + // This CSR contains an extension request where the extensions have a + // critical flag in them. In the past we failed to handle this. + const csrBase64 = "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" + + csrBytes := fromBase64(csrBase64) + csr, err := ParseCertificateRequest(csrBytes) + if err != nil { + t.Fatalf("failed to parse CSR: %s", err) + } + + expected := []struct { + Id asn1.ObjectIdentifier + Value []byte + }{ + {oidExtensionBasicConstraints, fromBase64("MAYBAf8CAQA=")}, + {oidExtensionKeyUsage, fromBase64("AwIChA==")}, + } + + if n := len(csr.Extensions); n != len(expected) { + t.Fatalf("expected to find %d extensions but found %d", len(expected), n) + } + + for i, extension := range csr.Extensions { + if !extension.Id.Equal(expected[i].Id) { + t.Fatalf("extension #%d has unexpected type %v (expected %v)", i, extension.Id, expected[i].Id) + } + + if !bytes.Equal(extension.Value, expected[i].Value) { + t.Fatalf("extension #%d has unexpected contents %x (expected %x)", i, extension.Value, expected[i].Value) + } + } +} + +// serialiseAndParse generates a self-signed certificate from template and +// returns a parsed version of it. +func serialiseAndParse(t *testing.T, template *Certificate) *Certificate { + derBytes, err := CreateCertificate(rand.Reader, template, template, &testPrivateKey.PublicKey, testPrivateKey) + if err != nil { + t.Fatalf("failed to create certificate: %s", err) + return nil + } + + cert, err := ParseCertificate(derBytes) + if err != nil { + t.Fatalf("failed to parse certificate: %s", err) + return nil + } + + return cert +} + +func TestMaxPathLenNotCA(t *testing.T) { + template := &Certificate{ + SerialNumber: big.NewInt(1), + Subject: pkix.Name{ + CommonName: "Σ Acme Co", + }, + NotBefore: time.Unix(1000, 0), + NotAfter: time.Unix(100000, 0), + + BasicConstraintsValid: true, + IsCA: false, + } + if m := serialiseAndParse(t, template).MaxPathLen; m != -1 { + t.Errorf("MaxPathLen should be -1 when IsCa is false, got %d", m) + } + + template.MaxPathLen = -1 + if m := serialiseAndParse(t, template).MaxPathLen; m != -1 { + t.Errorf("MaxPathLen should be -1 when IsCa is false and MaxPathLen set to -1, got %d", m) + } + + template.MaxPathLen = 5 + if _, err := CreateCertificate(rand.Reader, template, template, &testPrivateKey.PublicKey, testPrivateKey); err == nil { + t.Error("specifying a MaxPathLen when IsCA is false should fail") + } + + template.MaxPathLen = 0 + template.MaxPathLenZero = true + if _, err := CreateCertificate(rand.Reader, template, template, &testPrivateKey.PublicKey, testPrivateKey); err == nil { + t.Error("setting MaxPathLenZero when IsCA is false should fail") + } + + template.BasicConstraintsValid = false + if m := serialiseAndParse(t, template).MaxPathLen; m != 0 { + t.Errorf("Bad MaxPathLen should be ignored if BasicConstraintsValid is false, got %d", m) + } +} + +func TestMaxPathLen(t *testing.T) { + template := &Certificate{ + SerialNumber: big.NewInt(1), + Subject: pkix.Name{ + CommonName: "Σ Acme Co", + }, + NotBefore: time.Unix(1000, 0), + NotAfter: time.Unix(100000, 0), + + BasicConstraintsValid: true, + IsCA: true, + } + + cert1 := serialiseAndParse(t, template) + if m := cert1.MaxPathLen; m != -1 { + t.Errorf("Omitting MaxPathLen didn't turn into -1, got %d", m) + } + if cert1.MaxPathLenZero { + t.Errorf("Omitting MaxPathLen resulted in MaxPathLenZero") + } + + template.MaxPathLen = 1 + cert2 := serialiseAndParse(t, template) + if m := cert2.MaxPathLen; m != 1 { + t.Errorf("Setting MaxPathLen didn't work. Got %d but set 1", m) + } + if cert2.MaxPathLenZero { + t.Errorf("Setting MaxPathLen resulted in MaxPathLenZero") + } + + template.MaxPathLen = 0 + template.MaxPathLenZero = true + cert3 := serialiseAndParse(t, template) + if m := cert3.MaxPathLen; m != 0 { + t.Errorf("Setting MaxPathLenZero didn't work, got %d", m) + } + if !cert3.MaxPathLenZero { + t.Errorf("Setting MaxPathLen to zero didn't result in MaxPathLenZero") + } +} + +func TestNoAuthorityKeyIdInSelfSignedCert(t *testing.T) { + template := &Certificate{ + SerialNumber: big.NewInt(1), + Subject: pkix.Name{ + CommonName: "Σ Acme Co", + }, + NotBefore: time.Unix(1000, 0), + NotAfter: time.Unix(100000, 0), + + BasicConstraintsValid: true, + IsCA: true, + SubjectKeyId: []byte{1, 2, 3, 4}, + } + + if cert := serialiseAndParse(t, template); len(cert.AuthorityKeyId) != 0 { + t.Fatalf("self-signed certificate contained default authority key id") + } + + template.AuthorityKeyId = []byte{1, 2, 3, 4} + if cert := serialiseAndParse(t, template); len(cert.AuthorityKeyId) == 0 { + t.Fatalf("self-signed certificate erased explicit authority key id") + } +} + +func TestNoSubjectKeyIdInCert(t *testing.T) { + template := &Certificate{ + SerialNumber: big.NewInt(1), + Subject: pkix.Name{ + CommonName: "Σ Acme Co", + }, + NotBefore: time.Unix(1000, 0), + NotAfter: time.Unix(100000, 0), + + BasicConstraintsValid: true, + IsCA: true, + } + if cert := serialiseAndParse(t, template); len(cert.SubjectKeyId) == 0 { + t.Fatalf("self-signed certificate did not generate subject key id using the public key") + } + + template.IsCA = false + if cert := serialiseAndParse(t, template); len(cert.SubjectKeyId) != 0 { + t.Fatalf("self-signed certificate generated subject key id when it isn't a CA") + } + + template.SubjectKeyId = []byte{1, 2, 3, 4} + if cert := serialiseAndParse(t, template); len(cert.SubjectKeyId) == 0 { + t.Fatalf("self-signed certificate erased explicit subject key id") + } +} + +func TestASN1BitLength(t *testing.T) { + tests := []struct { + bytes []byte + bitLen int + }{ + {nil, 0}, + {[]byte{0x00}, 0}, + {[]byte{0x00, 0x00}, 0}, + {[]byte{0xf0}, 4}, + {[]byte{0x88}, 5}, + {[]byte{0xff}, 8}, + {[]byte{0xff, 0x80}, 9}, + {[]byte{0xff, 0x81}, 16}, + } + + for i, test := range tests { + if got := asn1BitLength(test.bytes); got != test.bitLen { + t.Errorf("#%d: calculated bit-length of %d for %x, wanted %d", i, got, test.bytes, test.bitLen) + } + } +} + +func TestVerifyEmptyCertificate(t *testing.T) { + if _, err := new(Certificate).Verify(VerifyOptions{}); err != errNotParsed { + t.Errorf("Verifying empty certificate resulted in unexpected error: %q (wanted %q)", err, errNotParsed) + } +} + +func TestInsecureAlgorithmErrorString(t *testing.T) { + tests := []struct { + sa SignatureAlgorithm + want string + }{ + {MD5WithRSA, "x509: cannot verify signature: insecure algorithm MD5-RSA"}, + {SHA1WithRSA, "x509: cannot verify signature: insecure algorithm SHA1-RSA (temporarily override with GODEBUG=x509sha1=1)"}, + {ECDSAWithSHA1, "x509: cannot verify signature: insecure algorithm ECDSA-SHA1 (temporarily override with GODEBUG=x509sha1=1)"}, + {MD2WithRSA, "x509: cannot verify signature: insecure algorithm MD2-RSA"}, + {-1, "x509: cannot verify signature: insecure algorithm -1"}, + {0, "x509: cannot verify signature: insecure algorithm 0"}, + {9999, "x509: cannot verify signature: insecure algorithm 9999"}, + } + for i, tt := range tests { + if got := fmt.Sprint(InsecureAlgorithmError(tt.sa)); got != tt.want { + t.Errorf("%d. mismatch.\n got: %s\nwant: %s\n", i, got, tt.want) + } + } +} + +// These CSR was generated with OpenSSL: +// +// openssl req -out CSR.csr -new -sha256 -nodes -keyout privateKey.key -config openssl.cnf +// +// With openssl.cnf containing the following sections: +// +// [ v3_req ] +// basicConstraints = CA:FALSE +// keyUsage = nonRepudiation, digitalSignature, keyEncipherment +// subjectAltName = email:gopher@golang.org,DNS:test.example.com +// [ req_attributes ] +// challengePassword = ignored challenge +// unstructuredName = ignored unstructured name +var csrBase64Array = [...]string{ + // Just [ v3_req ] + "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", + // Both [ v3_req ] and [ req_attributes ] + "MIIDaTCCAlECAQAwfjELMAkGA1UEBhMCQVUxEzARBgNVBAgMClNvbWUtU3RhdGUxITAfBgNVBAoMGEludGVybmV0IFdpZGdpdHMgUHR5IEx0ZDEUMBIGA1UEAwwLQ29tbW9uIE5hbWUxITAfBgkqhkiG9w0BCQEWEnRlc3RAZW1haWwuYWRkcmVzczCCASIwDQYJKoZIhvcNAQEBBQADggEPADCCAQoCggEBAK1GY4YFx2ujlZEOJxQVYmsjUnLsd5nFVnNpLE4cV+77sgv9NPNlB8uhn3MXt5leD34rm/2BisCHOifPucYlSrszo2beuKhvwn4+2FxDmWtBEMu/QA16L5IvoOfYZm/gJTsPwKDqvaR0tTU67a9OtxwNTBMI56YKtmwd/o8d3hYv9cg+9ZGAZ/gKONcg/OWYx/XRh6bd0g8DMbCikpWgXKDsvvK1Nk+VtkDO1JxuBaj4Lz/p/MifTfnHoqHxWOWl4EaTs4Ychxsv34/rSj1KD1tJqorIv5Xv2aqv4sjxfbrYzX4kvS5SC1goIovLnhj5UjmQ3Qy8u65eow/LLWw+YFcCAwEAAaCBpTAgBgkqhkiG9w0BCQcxEwwRaWdub3JlZCBjaGFsbGVuZ2UwKAYJKoZIhvcNAQkCMRsMGWlnbm9yZWQgdW5zdHJ1Y3R1cmVkIG5hbWUwVwYJKoZIhvcNAQkOMUowSDAJBgNVHRMEAjAAMAsGA1UdDwQEAwIF4DAuBgNVHREEJzAlgRFnb3BoZXJAZ29sYW5nLm9yZ4IQdGVzdC5leGFtcGxlLmNvbTANBgkqhkiG9w0BAQsFAAOCAQEAgxe2N5O48EMsYE7o0rZBB0wi3Ov5/yYfnmmVI22Y3sP6VXbLDW0+UWIeSccOhzUCcZ/G4qcrfhhx6gTZTeA01nP7TdTJURvWAH5iFqj9sQ0qnLq6nEcVHij3sG6M5+BxAIVClQBk6lTCzgphc835Fjj6qSLuJ20XHdL5UfUbiJxx299CHgyBRL+hBUIPfz8p+ZgamyAuDLfnj54zzcRVyLlrmMLNPZNll1Q70RxoU6uWvLH8wB8vQe3Q/guSGubLyLRTUQVPh+dw1L4t8MKFWfX/48jwRM4gIRHFHPeAAE9D9YAoqdIvj/iFm/eQ++7DP8MDwOZWsXeB6jjwHuLmkQ==", +} + +var md5cert = ` +-----BEGIN CERTIFICATE----- +MIIB4TCCAUoCCQCfmw3vMgPS5TANBgkqhkiG9w0BAQQFADA1MQswCQYDVQQGEwJB +VTETMBEGA1UECBMKU29tZS1TdGF0ZTERMA8GA1UEChMITUQ1IEluYy4wHhcNMTUx +MjAzMTkyOTMyWhcNMjkwODEyMTkyOTMyWjA1MQswCQYDVQQGEwJBVTETMBEGA1UE +CBMKU29tZS1TdGF0ZTERMA8GA1UEChMITUQ1IEluYy4wgZ8wDQYJKoZIhvcNAQEB +BQADgY0AMIGJAoGBANrq2nhLQj5mlXbpVX3QUPhfEm/vdEqPkoWtR/jRZIWm4WGf +Wpq/LKHJx2Pqwn+t117syN8l4U5unyAi1BJSXjBwPZNd7dXjcuJ+bRLV7FZ/iuvs +cfYyQQFTxan4TaJMd0x1HoNDbNbjHa02IyjjYE/r3mb/PIg+J2t5AZEh80lPAgMB +AAEwDQYJKoZIhvcNAQEEBQADgYEAjGzp3K3ey/YfKHohf33yHHWd695HQxDAP+wY +cs9/TAyLR+gJzJP7d18EcDDLJWVi7bhfa4EAD86di05azOh9kWSn4b3o9QYRGCSw +GNnI3Zk0cwNKA49hZntKKiy22DhRk7JAHF01d6Bu3KkHkmENrtJ+zj/+159WAnUa +qViorq4= +-----END CERTIFICATE----- +` + +func TestMD5(t *testing.T) { + pemBlock, _ := pem.Decode([]byte(md5cert)) + cert, err := ParseCertificate(pemBlock.Bytes) + if err != nil { + t.Fatalf("failed to parse certificate: %s", err) + } + if sa := cert.SignatureAlgorithm; sa != MD5WithRSA { + t.Errorf("signature algorithm is %v, want %v", sa, MD5WithRSA) + } + if err = cert.CheckSignatureFrom(cert); err == nil { + t.Fatalf("certificate verification succeeded incorrectly") + } + if _, ok := err.(InsecureAlgorithmError); !ok { + t.Fatalf("certificate verification returned %v (%T), wanted InsecureAlgorithmError", err, err) + } +} + +func TestSHA1(t *testing.T) { + pemBlock, _ := pem.Decode([]byte(ecdsaSHA1CertPem)) + cert, err := ParseCertificate(pemBlock.Bytes) + if err != nil { + t.Fatalf("failed to parse certificate: %s", err) + } + if sa := cert.SignatureAlgorithm; sa != ECDSAWithSHA1 { + t.Errorf("signature algorithm is %v, want %v", sa, ECDSAWithSHA1) + } + if err = cert.CheckSignatureFrom(cert); err == nil { + t.Fatalf("certificate verification succeeded incorrectly") + } + if _, ok := err.(InsecureAlgorithmError); !ok { + t.Fatalf("certificate verification returned %v (%T), wanted InsecureAlgorithmError", err, err) + } + + t.Setenv("GODEBUG", "x509sha1=1") + if err = cert.CheckSignatureFrom(cert); err != nil { + t.Fatalf("SHA-1 certificate did not verify with GODEBUG=x509sha1=1: %v", err) + } +} + +// certMissingRSANULL contains an RSA public key where the AlgorithmIdentifier +// parameters are omitted rather than being an ASN.1 NULL. +const certMissingRSANULL = ` +-----BEGIN CERTIFICATE----- +MIIB7TCCAVigAwIBAgIBADALBgkqhkiG9w0BAQUwJjEQMA4GA1UEChMHQWNtZSBD +bzESMBAGA1UEAxMJMTI3LjAuMC4xMB4XDTExMTIwODA3NTUxMloXDTEyMTIwNzA4 +MDAxMlowJjEQMA4GA1UEChMHQWNtZSBDbzESMBAGA1UEAxMJMTI3LjAuMC4xMIGc +MAsGCSqGSIb3DQEBAQOBjAAwgYgCgYBO0Hsx44Jk2VnAwoekXh6LczPHY1PfZpIG +hPZk1Y/kNqcdK+izIDZFI7Xjla7t4PUgnI2V339aEu+H5Fto5OkOdOwEin/ekyfE +ARl6vfLcPRSr0FTKIQzQTW6HLlzF0rtNS0/Otiz3fojsfNcCkXSmHgwa2uNKWi7e +E5xMQIhZkwIDAQABozIwMDAOBgNVHQ8BAf8EBAMCAKAwDQYDVR0OBAYEBAECAwQw +DwYDVR0jBAgwBoAEAQIDBDALBgkqhkiG9w0BAQUDgYEANh+zegx1yW43RmEr1b3A +p0vMRpqBWHyFeSnIyMZn3TJWRSt1tukkqVCavh9a+hoV2cxVlXIWg7nCto/9iIw4 +hB2rXZIxE0/9gzvGnfERYraL7KtnvshksBFQRlgXa5kc0x38BvEO5ZaoDPl4ILdE +GFGNEH5PlGffo05wc46QkYU= +-----END CERTIFICATE-----` + +func TestRSAMissingNULLParameters(t *testing.T) { + block, _ := pem.Decode([]byte(certMissingRSANULL)) + if _, err := ParseCertificate(block.Bytes); err == nil { + t.Error("unexpected success when parsing certificate with missing RSA NULL parameter") + } else if !strings.Contains(err.Error(), "missing NULL") { + t.Errorf("unrecognised error when parsing certificate with missing RSA NULL parameter: %s", err) + } +} + +const certISOOID = ` +-----BEGIN CERTIFICATE----- +MIIB5TCCAVKgAwIBAgIQtwyL3RPWV7dJQp34HwZG9DAJBgUrDgMCHQUAMBExDzAN +BgNVBAMTBm15dGVzdDAeFw0xNjA4MDkyMjExMDVaFw0zOTEyMzEyMzU5NTlaMBEx +DzANBgNVBAMTBm15dGVzdDCBnzANBgkqhkiG9w0BAQEFAAOBjQAwgYkCgYEArzIH +GsyDB3ohIGkkvijF2PTRUX1bvOtY1eUUpjwHyu0twpAKSuaQv2Ha+/63+aHe8O86 +BT+98wjXFX6RFSagtAujo80rIF2dSm33BGt18pDN8v6zp93dnAm0jRaSQrHJ75xw +5O+S1oEYR1LtUoFJy6qB104j6aINBAgOiLIKiMkCAwEAAaNGMEQwQgYDVR0BBDsw +OYAQVuYVQ/WDjdGSkZRlTtJDNKETMBExDzANBgNVBAMTBm15dGVzdIIQtwyL3RPW +V7dJQp34HwZG9DAJBgUrDgMCHQUAA4GBABngrSkH7vG5lY4sa4AZF59lAAXqBVJE +J4TBiKC62hCdZv18rBleP6ETfhbPg7pTs8p4ebQbpmtNxRS9Lw3MzQ8Ya5Ybwzj2 +NwBSyCtCQl7mrEg4nJqJl4A2EUhnET/oVxU0oTV/SZ3ziGXcY1oG1s6vidV7TZTu +MCRtdSdaM7g3 +-----END CERTIFICATE-----` + +func TestISOOIDInCertificate(t *testing.T) { + block, _ := pem.Decode([]byte(certISOOID)) + if cert, err := ParseCertificate(block.Bytes); err != nil { + t.Errorf("certificate with ISO OID failed to parse: %s", err) + } else if cert.SignatureAlgorithm == UnknownSignatureAlgorithm { + t.Errorf("ISO OID not recognised in certificate") + } +} + +// certMultipleRDN contains a RelativeDistinguishedName with two elements (the +// common name and serial number). This particular certificate was the first +// such certificate in the “Pilot” Certificate Transparency log. +const certMultipleRDN = ` +-----BEGIN CERTIFICATE----- +MIIFRzCCBC+gAwIBAgIEOl59NTANBgkqhkiG9w0BAQUFADA9MQswCQYDVQQGEwJz +aTEbMBkGA1UEChMSc3RhdGUtaW5zdGl0dXRpb25zMREwDwYDVQQLEwhzaWdvdi1j +YTAeFw0xMjExMTYxMDUyNTdaFw0xNzExMTYxMjQ5MDVaMIGLMQswCQYDVQQGEwJz +aTEbMBkGA1UEChMSc3RhdGUtaW5zdGl0dXRpb25zMRkwFwYDVQQLExB3ZWItY2Vy +dGlmaWNhdGVzMRAwDgYDVQQLEwdTZXJ2ZXJzMTIwFAYDVQQFEw0xMjM2NDg0MDEw +MDEwMBoGA1UEAxMTZXBvcnRhbC5tc3MuZWR1cy5zaTCCASIwDQYJKoZIhvcNAQEB +BQADggEPADCCAQoCggEBAMrNkZH9MPuBTjMGNk3sJX8V+CkFx/4ru7RTlLS6dlYM +098dtSfJ3s2w0p/1NB9UmR8j0yS0Kg6yoZ3ShsSO4DWBtcQD8820a6BYwqxxQTNf +HSRZOc+N/4TQrvmK6t4k9Aw+YEYTMrWOU4UTeyhDeCcUsBdh7HjfWsVaqNky+2sv +oic3zP5gF+2QfPkvOoHT3FLR8olNhViIE6Kk3eFIEs4dkq/ZzlYdLb8pHQoj/sGI +zFmA5AFvm1HURqOmJriFjBwaCtn8AVEYOtQrnUCzJYu1ex8azyS2ZgYMX0u8A5Z/ +y2aMS/B2W+H79WcgLpK28vPwe7vam0oFrVytAd+u65ECAwEAAaOCAf4wggH6MA4G +A1UdDwEB/wQEAwIFoDBABgNVHSAEOTA3MDUGCisGAQQBr1kBAwMwJzAlBggrBgEF +BQcCARYZaHR0cDovL3d3dy5jYS5nb3Yuc2kvY3BzLzAfBgNVHREEGDAWgRRwb2Rw +b3JhLm1pemtzQGdvdi5zaTCB8QYDVR0fBIHpMIHmMFWgU6BRpE8wTTELMAkGA1UE +BhMCc2kxGzAZBgNVBAoTEnN0YXRlLWluc3RpdHV0aW9uczERMA8GA1UECxMIc2ln +b3YtY2ExDjAMBgNVBAMTBUNSTDM5MIGMoIGJoIGGhldsZGFwOi8veDUwMC5nb3Yu +c2kvb3U9c2lnb3YtY2Esbz1zdGF0ZS1pbnN0aXR1dGlvbnMsYz1zaT9jZXJ0aWZp +Y2F0ZVJldm9jYXRpb25MaXN0P2Jhc2WGK2h0dHA6Ly93d3cuc2lnb3YtY2EuZ292 +LnNpL2NybC9zaWdvdi1jYS5jcmwwKwYDVR0QBCQwIoAPMjAxMjExMTYxMDUyNTda +gQ8yMDE3MTExNjEyNDkwNVowHwYDVR0jBBgwFoAUHvjUU2uzgwbpBAZXAvmlv8ZY +PHIwHQYDVR0OBBYEFGI1Duuu+wTGDZka/xHNbwcbM69ZMAkGA1UdEwQCMAAwGQYJ +KoZIhvZ9B0EABAwwChsEVjcuMQMCA6gwDQYJKoZIhvcNAQEFBQADggEBAHny0K1y +BQznrzDu3DDpBcGYguKU0dvU9rqsV1ua4nxkriSMWjgsX6XJFDdDW60I3P4VWab5 +ag5fZzbGqi8kva/CzGgZh+CES0aWCPy+4Gb8lwOTt+854/laaJvd6kgKTER7z7U9 +9C86Ch2y4sXNwwwPJ1A9dmrZJZOcJjS/WYZgwaafY2Hdxub5jqPE5nehwYUPVu9R +uH6/skk4OEKcfOtN0hCnISOVuKYyS4ANARWRG5VGHIH06z3lGUVARFRJ61gtAprd +La+fgSS+LVZ+kU2TkeoWAKvGq8MAgDq4D4Xqwekg7WKFeuyusi/NI5rm40XgjBMF +DF72IUofoVt7wo0= +-----END CERTIFICATE-----` + +func TestMultipleRDN(t *testing.T) { + block, _ := pem.Decode([]byte(certMultipleRDN)) + cert, err := ParseCertificate(block.Bytes) + if err != nil { + t.Fatalf("certificate with two elements in an RDN failed to parse: %v", err) + } + + if want := "eportal.mss.edus.si"; cert.Subject.CommonName != want { + t.Errorf("got common name of %q, but want %q", cert.Subject.CommonName, want) + } + + if want := "1236484010010"; cert.Subject.SerialNumber != want { + t.Errorf("got serial number of %q, but want %q", cert.Subject.SerialNumber, want) + } +} + +func TestSystemCertPool(t *testing.T) { + if runtime.GOOS == "windows" || runtime.GOOS == "darwin" || runtime.GOOS == "ios" { + t.Skip("not implemented on Windows (Issue 16736, 18609) or darwin (Issue 46287)") + } + a, err := SystemCertPool() + if err != nil { + t.Fatal(err) + } + b, err := SystemCertPool() + if err != nil { + t.Fatal(err) + } + if !certPoolEqual(a, b) { + t.Fatal("two calls to SystemCertPool had different results") + } + if ok := b.AppendCertsFromPEM([]byte(` +-----BEGIN CERTIFICATE----- +MIIDBjCCAe6gAwIBAgIRANXM5I3gjuqDfTp/PYrs+u8wDQYJKoZIhvcNAQELBQAw +EjEQMA4GA1UEChMHQWNtZSBDbzAeFw0xODAzMjcxOTU2MjFaFw0xOTAzMjcxOTU2 +MjFaMBIxEDAOBgNVBAoTB0FjbWUgQ28wggEiMA0GCSqGSIb3DQEBAQUAA4IBDwAw +ggEKAoIBAQDK+9m3rjsO2Djes6bIYQZ3eV29JF09ZrjOrEHLtaKrD6/acsoSoTsf +cQr+rzzztdB5ijWXCS64zo/0OiqBeZUNZ67jVdToa9qW5UYe2H0Y+ZNdfA5GYMFD +yk/l3/uBu3suTZPfXiW2TjEi27Q8ruNUIZ54DpTcs6y2rBRFzadPWwn/VQMlvRXM +jrzl8Y08dgnYmaAHprxVzwMXcQ/Brol+v9GvjaH1DooHqkn8O178wsPQNhdtvN01 +IXL46cYdcUwWrE/GX5u+9DaSi+0KWxAPQ+NVD5qUI0CKl4714yGGh7feXMjJdHgl +VG4QJZlJvC4FsURgCHJT6uHGIelnSwhbAgMBAAGjVzBVMA4GA1UdDwEB/wQEAwIF +oDATBgNVHSUEDDAKBggrBgEFBQcDATAMBgNVHRMBAf8EAjAAMCAGA1UdEQQZMBeC +FVRlc3RTeXN0ZW1DZXJ0UG9vbC5nbzANBgkqhkiG9w0BAQsFAAOCAQEAwuSRx/VR +BKh2ICxZjL6jBwk/7UlU1XKbhQD96RqkidDNGEc6eLZ90Z5XXTurEsXqdm5jQYPs +1cdcSW+fOSMl7MfW9e5tM66FaIPZl9rKZ1r7GkOfgn93xdLAWe8XHd19xRfDreub +YC8DVqgLASOEYFupVSl76ktPfxkU5KCvmUf3P2PrRybk1qLGFytGxfyice2gHSNI +gify3K/+H/7wCkyFW4xYvzl7WW4mXxoqPRPjQt1J423DhnnQ4G1P8V/vhUpXNXOq +N9IEPnWuihC09cyx/WMQIUlWnaQLHdfpPS04Iez3yy2PdfXJzwfPrja7rNE+skK6 +pa/O1nF0AfWOpw== +-----END CERTIFICATE----- + `)); !ok { + t.Fatal("AppendCertsFromPEM failed") + } + if reflect.DeepEqual(a, b) { + t.Fatal("changing one pool modified the other") + } +} + +const emptyNameConstraintsPEM = ` +-----BEGIN CERTIFICATE----- +MIIC1jCCAb6gAwIBAgICEjQwDQYJKoZIhvcNAQELBQAwKDEmMCQGA1UEAxMdRW1w +dHkgbmFtZSBjb25zdHJhaW50cyBpc3N1ZXIwHhcNMTMwMjAxMDAwMDAwWhcNMjAw +NTMwMTA0ODM4WjAhMR8wHQYDVQQDExZFbXB0eSBuYW1lIGNvbnN0cmFpbnRzMIIB +IjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAwriElUIt3LCqmJObs+yDoWPD +F5IqgWk6moIobYjPfextZiYU6I3EfvAwoNxPDkN2WowcocUZMJbEeEq5ebBksFnx +f12gBxlIViIYwZAzu7aFvhDMyPKQI3C8CG0ZSC9ABZ1E3umdA3CEueNOmP/TChNq +Cl23+BG1Qb/PJkpAO+GfpWSVhTcV53Mf/cKvFHcjGNrxzdSoq9fyW7a6gfcGEQY0 +LVkmwFWUfJ0wT8kaeLr0E0tozkIfo01KNWNzv6NcYP80QOBRDlApWu9ODmEVJHPD +blx4jzTQ3JLa+4DvBNOjVUOp+mgRmjiW0rLdrxwOxIqIOwNjweMCp/hgxX/hTQID +AQABoxEwDzANBgNVHR4EBjAEoAChADANBgkqhkiG9w0BAQsFAAOCAQEAWG+/zUMH +QhP8uNCtgSHyim/vh7wminwAvWgMKxlkLBFns6nZeQqsOV1lABY7U0Zuoqa1Z5nb +6L+iJa4ElREJOi/erLc9uLwBdDCAR0hUTKD7a6i4ooS39DTle87cUnj0MW1CUa6H +v5SsvpYW+1XleYJk/axQOOTcy4Es53dvnZsjXH0EA/QHnn7UV+JmlE3rtVxcYp6M +LYPmRhTioROA/drghicRkiu9hxdPyxkYS16M5g3Zj30jdm+k/6C6PeNtN9YmOOga +nCOSyFYfGhqOANYzpmuV+oIedAsPpIbfIzN8njYUs1zio+1IoI4o8ddM9sCbtPU8 +o+WoY6IsCKXV/g== +-----END CERTIFICATE-----` + +func TestEmptyNameConstraints(t *testing.T) { + block, _ := pem.Decode([]byte(emptyNameConstraintsPEM)) + _, err := ParseCertificate(block.Bytes) + if err == nil { + t.Fatal("unexpected success") + } + + const expected = "empty name constraints" + if str := err.Error(); !strings.Contains(str, expected) { + t.Errorf("expected %q in error but got %q", expected, str) + } +} + +func TestPKIXNameString(t *testing.T) { + der, err := base64.StdEncoding.DecodeString(certBytes) + if err != nil { + t.Fatal(err) + } + certs, err := ParseCertificates(der) + if err != nil { + t.Fatal(err) + } + + // Check that parsed non-standard attributes are printed. + rdns := pkix.Name{ + Locality: []string{"Gophertown"}, + ExtraNames: []pkix.AttributeTypeAndValue{ + {Type: asn1.ObjectIdentifier([]int{1, 2, 3, 4, 5}), Value: "golang.org"}}, + }.ToRDNSequence() + nn := pkix.Name{} + nn.FillFromRDNSequence(&rdns) + + // Check that zero-length non-nil ExtraNames hide Names. + extra := []pkix.AttributeTypeAndValue{ + {Type: asn1.ObjectIdentifier([]int{1, 2, 3, 4, 5}), Value: "backing array"}} + extraNotNil := pkix.Name{ + Locality: []string{"Gophertown"}, + ExtraNames: extra[:0], + Names: []pkix.AttributeTypeAndValue{ + {Type: asn1.ObjectIdentifier([]int{1, 2, 3, 4, 5}), Value: "golang.org"}}, + } + + tests := []struct { + dn pkix.Name + want string + }{ + {nn, "L=Gophertown,1.2.3.4.5=#130a676f6c616e672e6f7267"}, + {extraNotNil, "L=Gophertown"}, + {pkix.Name{ + CommonName: "Steve Kille", + Organization: []string{"Isode Limited"}, + OrganizationalUnit: []string{"RFCs"}, + Locality: []string{"Richmond"}, + Province: []string{"Surrey"}, + StreetAddress: []string{"The Square"}, + PostalCode: []string{"TW9 1DT"}, + SerialNumber: "RFC 2253", + Country: []string{"GB"}, + }, "SERIALNUMBER=RFC 2253,CN=Steve Kille,OU=RFCs,O=Isode Limited,POSTALCODE=TW9 1DT,STREET=The Square,L=Richmond,ST=Surrey,C=GB"}, + {certs[0].Subject, + "CN=mail.google.com,O=Google LLC,L=Mountain View,ST=California,C=US"}, + {pkix.Name{ + Organization: []string{"#Google, Inc. \n-> 'Alphabet\" "}, + Country: []string{"US"}, + }, "O=\\#Google\\, Inc. \n-\\> 'Alphabet\\\"\\ ,C=US"}, + {pkix.Name{ + CommonName: "foo.com", + Organization: []string{"Gopher Industries"}, + ExtraNames: []pkix.AttributeTypeAndValue{ + {Type: asn1.ObjectIdentifier([]int{2, 5, 4, 3}), Value: "bar.com"}}, + }, "CN=bar.com,O=Gopher Industries"}, + {pkix.Name{ + Locality: []string{"Gophertown"}, + ExtraNames: []pkix.AttributeTypeAndValue{ + {Type: asn1.ObjectIdentifier([]int{1, 2, 3, 4, 5}), Value: "golang.org"}}, + }, "1.2.3.4.5=#130a676f6c616e672e6f7267,L=Gophertown"}, + // If there are no ExtraNames, the Names are printed instead. + {pkix.Name{ + Locality: []string{"Gophertown"}, + Names: []pkix.AttributeTypeAndValue{ + {Type: asn1.ObjectIdentifier([]int{1, 2, 3, 4, 5}), Value: "golang.org"}}, + }, "L=Gophertown,1.2.3.4.5=#130a676f6c616e672e6f7267"}, + // If there are both, print only the ExtraNames. + {pkix.Name{ + Locality: []string{"Gophertown"}, + ExtraNames: []pkix.AttributeTypeAndValue{ + {Type: asn1.ObjectIdentifier([]int{1, 2, 3, 4, 5}), Value: "golang.org"}}, + Names: []pkix.AttributeTypeAndValue{ + {Type: asn1.ObjectIdentifier([]int{1, 2, 3, 4, 6}), Value: "example.com"}}, + }, "1.2.3.4.5=#130a676f6c616e672e6f7267,L=Gophertown"}, + } + + for i, test := range tests { + if got := test.dn.String(); got != test.want { + t.Errorf("#%d: String() = \n%s\n, want \n%s", i, got, test.want) + } + } + + if extra[0].Value != "backing array" { + t.Errorf("the backing array of an empty ExtraNames got modified by String") + } +} + +func TestRDNSequenceString(t *testing.T) { + // Test some extra cases that get lost in pkix.Name conversions such as + // multi-valued attributes. + + var ( + oidCountry = []int{2, 5, 4, 6} + oidOrganization = []int{2, 5, 4, 10} + oidOrganizationalUnit = []int{2, 5, 4, 11} + oidCommonName = []int{2, 5, 4, 3} + ) + + tests := []struct { + seq pkix.RDNSequence + want string + }{ + { + seq: pkix.RDNSequence{ + pkix.RelativeDistinguishedNameSET{ + pkix.AttributeTypeAndValue{Type: oidCountry, Value: "US"}, + }, + pkix.RelativeDistinguishedNameSET{ + pkix.AttributeTypeAndValue{Type: oidOrganization, Value: "Widget Inc."}, + }, + pkix.RelativeDistinguishedNameSET{ + pkix.AttributeTypeAndValue{Type: oidOrganizationalUnit, Value: "Sales"}, + pkix.AttributeTypeAndValue{Type: oidCommonName, Value: "J. Smith"}, + }, + }, + want: "OU=Sales+CN=J. Smith,O=Widget Inc.,C=US", + }, + } + + for i, test := range tests { + if got := test.seq.String(); got != test.want { + t.Errorf("#%d: String() = \n%s\n, want \n%s", i, got, test.want) + } + } +} + +const criticalNameConstraintWithUnknownTypePEM = ` +-----BEGIN CERTIFICATE----- +MIIC/TCCAeWgAwIBAgICEjQwDQYJKoZIhvcNAQELBQAwKDEmMCQGA1UEAxMdRW1w +dHkgbmFtZSBjb25zdHJhaW50cyBpc3N1ZXIwHhcNMTMwMjAxMDAwMDAwWhcNMjAw +NTMwMTA0ODM4WjAhMR8wHQYDVQQDExZFbXB0eSBuYW1lIGNvbnN0cmFpbnRzMIIB +IjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAwriElUIt3LCqmJObs+yDoWPD +F5IqgWk6moIobYjPfextZiYU6I3EfvAwoNxPDkN2WowcocUZMJbEeEq5ebBksFnx +f12gBxlIViIYwZAzu7aFvhDMyPKQI3C8CG0ZSC9ABZ1E3umdA3CEueNOmP/TChNq +Cl23+BG1Qb/PJkpAO+GfpWSVhTcV53Mf/cKvFHcjGNrxzdSoq9fyW7a6gfcGEQY0 +LVkmwFWUfJ0wT8kaeLr0E0tozkIfo01KNWNzv6NcYP80QOBRDlApWu9ODmEVJHPD +blx4jzTQ3JLa+4DvBNOjVUOp+mgRmjiW0rLdrxwOxIqIOwNjweMCp/hgxX/hTQID +AQABozgwNjA0BgNVHR4BAf8EKjAooCQwIokgIACrzQAAAAAAAAAAAAAAAP////8A +AAAAAAAAAAAAAAChADANBgkqhkiG9w0BAQsFAAOCAQEAWG+/zUMHQhP8uNCtgSHy +im/vh7wminwAvWgMKxlkLBFns6nZeQqsOV1lABY7U0Zuoqa1Z5nb6L+iJa4ElREJ +Oi/erLc9uLwBdDCAR0hUTKD7a6i4ooS39DTle87cUnj0MW1CUa6Hv5SsvpYW+1Xl +eYJk/axQOOTcy4Es53dvnZsjXH0EA/QHnn7UV+JmlE3rtVxcYp6MLYPmRhTioROA +/drghicRkiu9hxdPyxkYS16M5g3Zj30jdm+k/6C6PeNtN9YmOOganCOSyFYfGhqO +ANYzpmuV+oIedAsPpIbfIzN8njYUs1zio+1IoI4o8ddM9sCbtPU8o+WoY6IsCKXV +/g== +-----END CERTIFICATE-----` + +func TestCriticalNameConstraintWithUnknownType(t *testing.T) { + block, _ := pem.Decode([]byte(criticalNameConstraintWithUnknownTypePEM)) + cert, err := ParseCertificate(block.Bytes) + if err != nil { + t.Fatalf("unexpected parsing failure: %s", err) + } + + if l := len(cert.UnhandledCriticalExtensions); l != 1 { + t.Fatalf("expected one unhandled critical extension, but found %d", l) + } +} + +const badIPMaskPEM = ` +-----BEGIN CERTIFICATE----- +MIICzzCCAbegAwIBAgICEjQwDQYJKoZIhvcNAQELBQAwHTEbMBkGA1UEAxMSQmFk +IElQIG1hc2sgaXNzdWVyMB4XDTEzMDIwMTAwMDAwMFoXDTIwMDUzMDEwNDgzOFow +FjEUMBIGA1UEAxMLQmFkIElQIG1hc2swggEiMA0GCSqGSIb3DQEBAQUAA4IBDwAw +ggEKAoIBAQDCuISVQi3csKqYk5uz7IOhY8MXkiqBaTqagihtiM997G1mJhTojcR+ +8DCg3E8OQ3ZajByhxRkwlsR4Srl5sGSwWfF/XaAHGUhWIhjBkDO7toW+EMzI8pAj +cLwIbRlIL0AFnUTe6Z0DcIS5406Y/9MKE2oKXbf4EbVBv88mSkA74Z+lZJWFNxXn +cx/9wq8UdyMY2vHN1Kir1/JbtrqB9wYRBjQtWSbAVZR8nTBPyRp4uvQTS2jOQh+j +TUo1Y3O/o1xg/zRA4FEOUCla704OYRUkc8NuXHiPNNDcktr7gO8E06NVQ6n6aBGa +OJbSst2vHA7Eiog7A2PB4wKn+GDFf+FNAgMBAAGjIDAeMBwGA1UdHgEB/wQSMBCg +DDAKhwgBAgME//8BAKEAMA0GCSqGSIb3DQEBCwUAA4IBAQBYb7/NQwdCE/y40K2B +IfKKb++HvCaKfAC9aAwrGWQsEWezqdl5Cqw5XWUAFjtTRm6iprVnmdvov6IlrgSV +EQk6L96stz24vAF0MIBHSFRMoPtrqLiihLf0NOV7ztxSePQxbUJRroe/lKy+lhb7 +VeV5gmT9rFA45NzLgSznd2+dmyNcfQQD9AeeftRX4maUTeu1XFxinowtg+ZGFOKh +E4D92uCGJxGSK72HF0/LGRhLXozmDdmPfSN2b6T/oLo942031iY46BqcI5LIVh8a +Go4A1jOma5X6gh50Cw+kht8jM3yeNhSzXOKj7Uigjijx10z2wJu09Tyj5ahjoiwI +pdX+ +-----END CERTIFICATE-----` + +func TestBadIPMask(t *testing.T) { + block, _ := pem.Decode([]byte(badIPMaskPEM)) + _, err := ParseCertificate(block.Bytes) + if err == nil { + t.Fatalf("unexpected success") + } + + const expected = "contained invalid mask" + if !strings.Contains(err.Error(), expected) { + t.Fatalf("expected %q in error but got: %s", expected, err) + } +} + +const additionalGeneralSubtreePEM = ` +-----BEGIN CERTIFICATE----- +MIIG4TCCBMmgAwIBAgIRALss+4rLw2Ia7tFFhxE8g5cwDQYJKoZIhvcNAQELBQAw +bjELMAkGA1UEBhMCTkwxIDAeBgNVBAoMF01pbmlzdGVyaWUgdmFuIERlZmVuc2ll +MT0wOwYDVQQDDDRNaW5pc3RlcmllIHZhbiBEZWZlbnNpZSBDZXJ0aWZpY2F0aWUg +QXV0b3JpdGVpdCAtIEcyMB4XDTEzMDMwNjEyMDM0OVoXDTEzMTEzMDEyMDM1MFow +bDELMAkGA1UEBhMCVVMxFjAUBgNVBAoTDUNlcnRpUGF0aCBMTEMxIjAgBgNVBAsT +GUNlcnRpZmljYXRpb24gQXV0aG9yaXRpZXMxITAfBgNVBAMTGENlcnRpUGF0aCBC +cmlkZ2UgQ0EgLSBHMjCCASIwDQYJKoZIhvcNAQEBBQADggEPADCCAQoCggEBANLW +4kXiRqvwBhJfN9uz12FA+P2D34MPxOt7TGXljm2plJ2CLzvaH8/ymsMdSWdJBS1M +8FmwvNL1w3A6ZuzksJjPikAu8kY3dcp3mrkk9eCPORDAwGtfsXwZysLiuEaDWpbD +dHOaHnI6qWU0N6OI+hNX58EjDpIGC1WQdho1tHOTPc5Hf5/hOpM/29v/wr7kySjs +Z+7nsvkm5rNhuJNzPsLsgzVaJ5/BVyOplZy24FKM8Y43MjR4osZm+a2e0zniqw6/ +rvcjcGYabYaznZfQG1GXoyf2Vea+CCgpgUhlVafgkwEs8izl8rIpvBzXiFAgFQuG +Ituoy92PJbDs430fA/cCAwEAAaOCAnowggJ2MEUGCCsGAQUFBwEBBDkwNzA1Bggr +BgEFBQcwAoYpaHR0cDovL2NlcnRzLmNhLm1pbmRlZi5ubC9taW5kZWYtY2EtMi5w +N2MwHwYDVR0jBBgwFoAUzln9WSPz2M64Rl2HYf2/KD8StmQwDwYDVR0TAQH/BAUw +AwEB/zCB6QYDVR0gBIHhMIHeMEgGCmCEEAGHawECBQEwOjA4BggrBgEFBQcCARYs +aHR0cDovL2Nwcy5kcC5jYS5taW5kZWYubmwvbWluZGVmLWNhLWRwLWNwcy8wSAYK +YIQQAYdrAQIFAjA6MDgGCCsGAQUFBwIBFixodHRwOi8vY3BzLmRwLmNhLm1pbmRl +Zi5ubC9taW5kZWYtY2EtZHAtY3BzLzBIBgpghBABh2sBAgUDMDowOAYIKwYBBQUH +AgEWLGh0dHA6Ly9jcHMuZHAuY2EubWluZGVmLm5sL21pbmRlZi1jYS1kcC1jcHMv +MDkGA1UdHwQyMDAwLqAsoCqGKGh0dHA6Ly9jcmxzLmNhLm1pbmRlZi5ubC9taW5k +ZWYtY2EtMi5jcmwwDgYDVR0PAQH/BAQDAgEGMEYGA1UdHgEB/wQ8MDqhODA2pDEw +LzELMAkGA1UEBhMCTkwxIDAeBgNVBAoTF01pbmlzdGVyaWUgdmFuIERlZmVuc2ll +gQFjMF0GA1UdIQRWMFQwGgYKYIQQAYdrAQIFAQYMKwYBBAGBu1MBAQECMBoGCmCE +EAGHawECBQIGDCsGAQQBgbtTAQEBAjAaBgpghBABh2sBAgUDBgwrBgEEAYG7UwEB +AQIwHQYDVR0OBBYEFNDCjBM3M3ZKkag84ei3/aKc0d0UMA0GCSqGSIb3DQEBCwUA +A4ICAQAQXFn9jF90/DNFf15JhoGtta/0dNInb14PMu3PAjcdrXYCDPpQZOArTUng +5YT1WuzfmjnXiTsziT3my0r9Mxvz/btKK/lnVOMW4c2q/8sIsIPnnW5ZaRGrsANB +dNDZkzMYmeG2Pfgvd0AQSOrpE/TVgWfu/+MMRWwX9y6VbooBR7BLv7zMuVH0WqLn +6OMFth7fqsThlfMSzkE/RDSaU6n3wXAWT1SIqBITtccRjSUQUFm/q3xrb2cwcZA6 +8vdS4hzNd+ttS905ay31Ks4/1Wrm1bH5RhEfRSH0VSXnc0b+z+RyBbmiwtVZqzxE +u3UQg/rAmtLDclLFEzjp8YDTIRYSLwstDbEXO/0ArdGrQm79HQ8i/3ZbP2357myW +i15qd6gMJIgGHS4b8Hc7R1K8LQ9Gm1aLKBEWVNGZlPK/cpXThpVmoEyslN2DHCrc +fbMbjNZpXlTMa+/b9z7Fa4X8dY8u/ELzZuJXJv5Rmqtg29eopFFYDCl0Nkh1XAjo +QejEoHHUvYV8TThHZr6Z6Ib8CECgTehU4QvepkgDXNoNrKRZBG0JhLjkwxh2whZq +nvWBfALC2VuNOM6C0rDY+HmhMlVt0XeqnybD9MuQALMit7Z00Cw2CIjNsBI9xBqD +xKK9CjUb7gzRUWSpB9jGHsvpEMHOzIFhufvH2Bz1XJw+Cl7khw== +-----END CERTIFICATE-----` + +func TestAdditionFieldsInGeneralSubtree(t *testing.T) { + // Very rarely, certificates can include additional fields in the + // GeneralSubtree structure. This tests that such certificates can be + // parsed. + block, _ := pem.Decode([]byte(additionalGeneralSubtreePEM)) + if _, err := ParseCertificate(block.Bytes); err != nil { + t.Fatalf("failed to parse certificate: %s", err) + } +} + +func TestEmptySubject(t *testing.T) { + template := Certificate{ + SerialNumber: big.NewInt(1), + DNSNames: []string{"example.com"}, + } + + derBytes, err := CreateCertificate(rand.Reader, &template, &template, &testPrivateKey.PublicKey, testPrivateKey) + if err != nil { + t.Fatalf("failed to create certificate: %s", err) + } + + cert, err := ParseCertificate(derBytes) + if err != nil { + t.Fatalf("failed to parse certificate: %s", err) + } + + for _, ext := range cert.Extensions { + if ext.Id.Equal(oidExtensionSubjectAltName) { + if !ext.Critical { + t.Fatal("SAN extension is not critical") + } + return + } + } + + t.Fatal("SAN extension is missing") +} + +// multipleURLsInCRLDPPEM contains two URLs in a single CRL DistributionPoint +// structure. It is taken from https://crt.sh/?id=12721534. +const multipleURLsInCRLDPPEM = ` +-----BEGIN CERTIFICATE----- +MIIF4TCCBMmgAwIBAgIQc+6uFePfrahUGpXs8lhiTzANBgkqhkiG9w0BAQsFADCB +8zELMAkGA1UEBhMCRVMxOzA5BgNVBAoTMkFnZW5jaWEgQ2F0YWxhbmEgZGUgQ2Vy +dGlmaWNhY2lvIChOSUYgUS0wODAxMTc2LUkpMSgwJgYDVQQLEx9TZXJ2ZWlzIFB1 +YmxpY3MgZGUgQ2VydGlmaWNhY2lvMTUwMwYDVQQLEyxWZWdldSBodHRwczovL3d3 +dy5jYXRjZXJ0Lm5ldC92ZXJhcnJlbCAoYykwMzE1MDMGA1UECxMsSmVyYXJxdWlh +IEVudGl0YXRzIGRlIENlcnRpZmljYWNpbyBDYXRhbGFuZXMxDzANBgNVBAMTBkVD +LUFDQzAeFw0xNDA5MTgwODIxMDBaFw0zMDA5MTgwODIxMDBaMIGGMQswCQYDVQQG +EwJFUzEzMDEGA1UECgwqQ09OU09SQ0kgQURNSU5JU1RSQUNJTyBPQkVSVEEgREUg +Q0FUQUxVTllBMSowKAYDVQQLDCFTZXJ2ZWlzIFDDumJsaWNzIGRlIENlcnRpZmlj +YWNpw7MxFjAUBgNVBAMMDUVDLUNpdXRhZGFuaWEwggEiMA0GCSqGSIb3DQEBAQUA +A4IBDwAwggEKAoIBAQDFkHPRZPZlXTWZ5psJhbS/Gx+bxcTpGrlVQHHtIkgGz77y +TA7UZUFb2EQMncfbOhR0OkvQQn1aMvhObFJSR6nI+caf2D+h/m/InMl1MyH3S0Ak +YGZZsthnyC6KxqK2A/NApncrOreh70ULkQs45aOKsi1kR1W0zE+iFN+/P19P7AkL +Rl3bXBCVd8w+DLhcwRrkf1FCDw6cEqaFm3cGgf5cbBDMaVYAweWTxwBZAq2RbQAW +jE7mledcYghcZa4U6bUmCBPuLOnO8KMFAvH+aRzaf3ws5/ZoOVmryyLLJVZ54peZ +OwnP9EL4OuWzmXCjBifXR2IAblxs5JYj57tls45nAgMBAAGjggHaMIIB1jASBgNV +HRMBAf8ECDAGAQH/AgEAMA4GA1UdDwEB/wQEAwIBBjAdBgNVHQ4EFgQUC2hZPofI +oxUa4ECCIl+fHbLFNxUwHwYDVR0jBBgwFoAUoMOLRKo3pUW/l4Ba0fF4opvpXY0w +gdYGA1UdIASBzjCByzCByAYEVR0gADCBvzAxBggrBgEFBQcCARYlaHR0cHM6Ly93 +d3cuYW9jLmNhdC9DQVRDZXJ0L1JlZ3VsYWNpbzCBiQYIKwYBBQUHAgIwfQx7QXF1 +ZXN0IGNlcnRpZmljYXQgw6lzIGVtw6hzIMO6bmljYSBpIGV4Y2x1c2l2YW1lbnQg +YSBFbnRpdGF0cyBkZSBDZXJ0aWZpY2FjacOzLiBWZWdldSBodHRwczovL3d3dy5h +b2MuY2F0L0NBVENlcnQvUmVndWxhY2lvMDMGCCsGAQUFBwEBBCcwJTAjBggrBgEF +BQcwAYYXaHR0cDovL29jc3AuY2F0Y2VydC5jYXQwYgYDVR0fBFswWTBXoFWgU4Yn +aHR0cDovL2Vwc2NkLmNhdGNlcnQubmV0L2NybC9lYy1hY2MuY3JshihodHRwOi8v +ZXBzY2QyLmNhdGNlcnQubmV0L2NybC9lYy1hY2MuY3JsMA0GCSqGSIb3DQEBCwUA +A4IBAQChqFTjlAH5PyIhLjLgEs68CyNNC1+vDuZXRhy22TI83JcvGmQrZosPvVIL +PsUXx+C06Pfqmh48Q9S89X9K8w1SdJxP/rZeGEoRiKpwvQzM4ArD9QxyC8jirxex +3Umg9Ai/sXQ+1lBf6xw4HfUUr1WIp7pNHj0ZWLo106urqktcdeAFWme+/klis5fu +labCSVPuT/QpwakPrtqOhRms8vgpKiXa/eLtL9ZiA28X/Mker0zlAeTA7Z7uAnp6 +oPJTlZu1Gg1ZDJueTWWsLlO+P+Wzm3MRRIbcgdRzm4mdO7ubu26SzX/aQXDhuih+ +eVxXDTCfs7GUlxnjOp5j559X/N0A +-----END CERTIFICATE----- +` + +func TestMultipleURLsInCRLDP(t *testing.T) { + block, _ := pem.Decode([]byte(multipleURLsInCRLDPPEM)) + cert, err := ParseCertificate(block.Bytes) + if err != nil { + t.Fatalf("failed to parse certificate: %s", err) + } + + want := []string{ + "http://epscd.catcert.net/crl/ec-acc.crl", + "http://epscd2.catcert.net/crl/ec-acc.crl", + } + if got := cert.CRLDistributionPoints; !reflect.DeepEqual(got, want) { + t.Errorf("CRL distribution points = %#v, want #%v", got, want) + } +} + +const hexPKCS1TestPKCS8Key = "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" +const hexPKCS1TestECKey = "3081a40201010430bdb9839c08ee793d1157886a7a758a3c8b2a17a4df48f17ace57c72c56b4723cf21dcda21d4e1ad57ff034f19fcfd98ea00706052b81040022a16403620004feea808b5ee2429cfcce13c32160e1c960990bd050bb0fdf7222f3decd0a55008e32a6aa3c9062051c4cba92a7a3b178b24567412d43cdd2f882fa5addddd726fe3e208d2c26d733a773a597abb749714df7256ead5105fa6e7b3650de236b50" + +var pkcs1MismatchKeyTests = []struct { + hexKey string + errorContains string +}{ + {hexKey: hexPKCS1TestPKCS8Key, errorContains: "use ParsePKCS8PrivateKey instead"}, + {hexKey: hexPKCS1TestECKey, errorContains: "use ParseECPrivateKey instead"}, +} + +func TestPKCS1MismatchKeyFormat(t *testing.T) { + for i, test := range pkcs1MismatchKeyTests { + derBytes, _ := hex.DecodeString(test.hexKey) + _, err := ParsePKCS1PrivateKey(derBytes) + if !strings.Contains(err.Error(), test.errorContains) { + t.Errorf("#%d: expected error containing %q, got %s", i, test.errorContains, err) + } + } +} + +func TestCreateRevocationList(t *testing.T) { + ec256Priv, err := ecdsa.GenerateKey(elliptic.P256(), rand.Reader) + if err != nil { + t.Fatalf("Failed to generate ECDSA P256 key: %s", err) + } + _, ed25519Priv, err := ed25519.GenerateKey(rand.Reader) + if err != nil { + t.Fatalf("Failed to generate Ed25519 key: %s", err) + } + + // Generation command: + // openssl req -x509 -newkey rsa -keyout key.pem -out cert.pem -days 365 -nodes -subj '/C=US/ST=California/L=San Francisco/O=Internet Widgets, Inc./OU=WWW/CN=Root/emailAddress=admin@example.com' -sha256 -addext basicConstraints=CA:TRUE -addext "keyUsage = digitalSignature, keyEncipherment, dataEncipherment, cRLSign, keyCertSign" -utf8 + utf8CAStr := "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" + utf8CABytes, _ := base64.StdEncoding.DecodeString(utf8CAStr) + utf8CA, _ := ParseCertificate(utf8CABytes) + + utf8KeyStr := "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" + utf8KeyBytes, _ := base64.StdEncoding.DecodeString(utf8KeyStr) + utf8KeyRaw, _ := ParsePKCS8PrivateKey(utf8KeyBytes) + utf8Key := utf8KeyRaw.(crypto.Signer) + + tests := []struct { + name string + key crypto.Signer + issuer *Certificate + template *RevocationList + expectedError string + }{ + { + name: "nil template", + key: ec256Priv, + issuer: nil, + template: nil, + expectedError: "x509: template can not be nil", + }, + { + name: "nil issuer", + key: ec256Priv, + issuer: nil, + template: &RevocationList{}, + expectedError: "x509: issuer can not be nil", + }, + { + name: "issuer doesn't have crlSign key usage bit set", + key: ec256Priv, + issuer: &Certificate{ + KeyUsage: KeyUsageCertSign, + }, + template: &RevocationList{}, + expectedError: "x509: issuer must have the crlSign key usage bit set", + }, + { + name: "issuer missing SubjectKeyId", + key: ec256Priv, + issuer: &Certificate{ + KeyUsage: KeyUsageCRLSign, + }, + template: &RevocationList{}, + expectedError: "x509: issuer certificate doesn't contain a subject key identifier", + }, + { + name: "nextUpdate before thisUpdate", + key: ec256Priv, + issuer: &Certificate{ + KeyUsage: KeyUsageCRLSign, + Subject: pkix.Name{ + CommonName: "testing", + }, + SubjectKeyId: []byte{1, 2, 3}, + }, + template: &RevocationList{ + ThisUpdate: time.Time{}.Add(time.Hour), + NextUpdate: time.Time{}, + }, + expectedError: "x509: template.ThisUpdate is after template.NextUpdate", + }, + { + name: "nil Number", + key: ec256Priv, + issuer: &Certificate{ + KeyUsage: KeyUsageCRLSign, + Subject: pkix.Name{ + CommonName: "testing", + }, + SubjectKeyId: []byte{1, 2, 3}, + }, + template: &RevocationList{ + ThisUpdate: time.Time{}.Add(time.Hour * 24), + NextUpdate: time.Time{}.Add(time.Hour * 48), + }, + expectedError: "x509: template contains nil Number field", + }, + { + name: "long Number", + key: ec256Priv, + issuer: &Certificate{ + KeyUsage: KeyUsageCRLSign, + Subject: pkix.Name{ + CommonName: "testing", + }, + SubjectKeyId: []byte{1, 2, 3}, + }, + template: &RevocationList{ + ThisUpdate: time.Time{}.Add(time.Hour * 24), + NextUpdate: time.Time{}.Add(time.Hour * 48), + Number: big.NewInt(0).SetBytes(append([]byte{1}, make([]byte, 20)...)), + }, + expectedError: "x509: CRL number exceeds 20 octets", + }, + { + name: "long Number (20 bytes, MSB set)", + key: ec256Priv, + issuer: &Certificate{ + KeyUsage: KeyUsageCRLSign, + Subject: pkix.Name{ + CommonName: "testing", + }, + SubjectKeyId: []byte{1, 2, 3}, + }, + template: &RevocationList{ + ThisUpdate: time.Time{}.Add(time.Hour * 24), + NextUpdate: time.Time{}.Add(time.Hour * 48), + Number: big.NewInt(0).SetBytes(append([]byte{255}, make([]byte, 19)...)), + }, + expectedError: "x509: CRL number exceeds 20 octets", + }, + { + name: "invalid signature algorithm", + key: ec256Priv, + issuer: &Certificate{ + KeyUsage: KeyUsageCRLSign, + Subject: pkix.Name{ + CommonName: "testing", + }, + SubjectKeyId: []byte{1, 2, 3}, + }, + template: &RevocationList{ + SignatureAlgorithm: SHA256WithRSA, + RevokedCertificates: []pkix.RevokedCertificate{ + { + SerialNumber: big.NewInt(2), + RevocationTime: time.Time{}.Add(time.Hour), + }, + }, + Number: big.NewInt(5), + ThisUpdate: time.Time{}.Add(time.Hour * 24), + NextUpdate: time.Time{}.Add(time.Hour * 48), + }, + expectedError: "x509: requested SignatureAlgorithm does not match private key type", + }, + { + name: "valid", + key: ec256Priv, + issuer: &Certificate{ + KeyUsage: KeyUsageCRLSign, + Subject: pkix.Name{ + CommonName: "testing", + }, + SubjectKeyId: []byte{1, 2, 3}, + }, + template: &RevocationList{ + RevokedCertificateEntries: []RevocationListEntry{ + { + SerialNumber: big.NewInt(2), + RevocationTime: time.Time{}.Add(time.Hour), + }, + }, + Number: big.NewInt(5), + ThisUpdate: time.Time{}.Add(time.Hour * 24), + NextUpdate: time.Time{}.Add(time.Hour * 48), + }, + }, + { + name: "valid, reason code", + key: ec256Priv, + issuer: &Certificate{ + KeyUsage: KeyUsageCRLSign, + Subject: pkix.Name{ + CommonName: "testing", + }, + SubjectKeyId: []byte{1, 2, 3}, + }, + template: &RevocationList{ + RevokedCertificateEntries: []RevocationListEntry{ + { + SerialNumber: big.NewInt(2), + RevocationTime: time.Time{}.Add(time.Hour), + ReasonCode: 1, + }, + }, + Number: big.NewInt(5), + ThisUpdate: time.Time{}.Add(time.Hour * 24), + NextUpdate: time.Time{}.Add(time.Hour * 48), + }, + }, + { + name: "valid, extra entry extension", + key: ec256Priv, + issuer: &Certificate{ + KeyUsage: KeyUsageCRLSign, + Subject: pkix.Name{ + CommonName: "testing", + }, + SubjectKeyId: []byte{1, 2, 3}, + }, + template: &RevocationList{ + RevokedCertificateEntries: []RevocationListEntry{ + { + SerialNumber: big.NewInt(2), + RevocationTime: time.Time{}.Add(time.Hour), + ExtraExtensions: []pkix.Extension{ + { + Id: []int{2, 5, 29, 99}, + Value: []byte{5, 0}, + }, + }, + }, + }, + Number: big.NewInt(5), + ThisUpdate: time.Time{}.Add(time.Hour * 24), + NextUpdate: time.Time{}.Add(time.Hour * 48), + }, + }, + { + name: "valid, Ed25519 key", + key: ed25519Priv, + issuer: &Certificate{ + KeyUsage: KeyUsageCRLSign, + Subject: pkix.Name{ + CommonName: "testing", + }, + SubjectKeyId: []byte{1, 2, 3}, + }, + template: &RevocationList{ + RevokedCertificateEntries: []RevocationListEntry{ + { + SerialNumber: big.NewInt(2), + RevocationTime: time.Time{}.Add(time.Hour), + }, + }, + Number: big.NewInt(5), + ThisUpdate: time.Time{}.Add(time.Hour * 24), + NextUpdate: time.Time{}.Add(time.Hour * 48), + }, + }, + { + name: "valid, non-default signature algorithm", + key: ec256Priv, + issuer: &Certificate{ + KeyUsage: KeyUsageCRLSign, + Subject: pkix.Name{ + CommonName: "testing", + }, + SubjectKeyId: []byte{1, 2, 3}, + }, + template: &RevocationList{ + SignatureAlgorithm: ECDSAWithSHA512, + RevokedCertificateEntries: []RevocationListEntry{ + { + SerialNumber: big.NewInt(2), + RevocationTime: time.Time{}.Add(time.Hour), + }, + }, + Number: big.NewInt(5), + ThisUpdate: time.Time{}.Add(time.Hour * 24), + NextUpdate: time.Time{}.Add(time.Hour * 48), + }, + }, + { + name: "valid, extra extension", + key: ec256Priv, + issuer: &Certificate{ + KeyUsage: KeyUsageCRLSign, + Subject: pkix.Name{ + CommonName: "testing", + }, + SubjectKeyId: []byte{1, 2, 3}, + }, + template: &RevocationList{ + RevokedCertificateEntries: []RevocationListEntry{ + { + SerialNumber: big.NewInt(2), + RevocationTime: time.Time{}.Add(time.Hour), + }, + }, + Number: big.NewInt(5), + ThisUpdate: time.Time{}.Add(time.Hour * 24), + NextUpdate: time.Time{}.Add(time.Hour * 48), + ExtraExtensions: []pkix.Extension{ + { + Id: []int{2, 5, 29, 99}, + Value: []byte{5, 0}, + }, + }, + }, + }, + { + name: "valid, deprecated entries with extension", + key: ec256Priv, + issuer: &Certificate{ + KeyUsage: KeyUsageCRLSign, + Subject: pkix.Name{ + CommonName: "testing", + }, + SubjectKeyId: []byte{1, 2, 3}, + }, + template: &RevocationList{ + RevokedCertificates: []pkix.RevokedCertificate{ + { + SerialNumber: big.NewInt(2), + RevocationTime: time.Time{}.Add(time.Hour), + Extensions: []pkix.Extension{ + { + Id: []int{2, 5, 29, 99}, + Value: []byte{5, 0}, + }, + }, + }, + }, + Number: big.NewInt(5), + ThisUpdate: time.Time{}.Add(time.Hour * 24), + NextUpdate: time.Time{}.Add(time.Hour * 48), + }, + }, + { + name: "valid, empty list", + key: ec256Priv, + issuer: &Certificate{ + KeyUsage: KeyUsageCRLSign, + Subject: pkix.Name{ + CommonName: "testing", + }, + SubjectKeyId: []byte{1, 2, 3}, + }, + template: &RevocationList{ + Number: big.NewInt(5), + ThisUpdate: time.Time{}.Add(time.Hour * 24), + NextUpdate: time.Time{}.Add(time.Hour * 48), + }, + }, + { + name: "valid CA with utf8 Subject fields including Email, empty list", + key: utf8Key, + issuer: utf8CA, + template: &RevocationList{ + Number: big.NewInt(5), + ThisUpdate: time.Time{}.Add(time.Hour * 24), + NextUpdate: time.Time{}.Add(time.Hour * 48), + }, + }, + } + + for _, tc := range tests { + t.Run(tc.name, func(t *testing.T) { + crl, err := CreateRevocationList(rand.Reader, tc.template, tc.issuer, tc.key) + if err != nil && tc.expectedError == "" { + t.Fatalf("CreateRevocationList failed unexpectedly: %s", err) + } else if err != nil && tc.expectedError != err.Error() { + t.Fatalf("CreateRevocationList failed unexpectedly, wanted: %s, got: %s", tc.expectedError, err) + } else if err == nil && tc.expectedError != "" { + t.Fatalf("CreateRevocationList didn't fail, expected: %s", tc.expectedError) + } + if tc.expectedError != "" { + return + } + + parsedCRL, err := ParseRevocationList(crl) + if err != nil { + t.Fatalf("Failed to parse generated CRL: %s", err) + } + + if tc.template.SignatureAlgorithm != UnknownSignatureAlgorithm && + parsedCRL.SignatureAlgorithm != tc.template.SignatureAlgorithm { + t.Fatalf("SignatureAlgorithm mismatch: got %v; want %v.", parsedCRL.SignatureAlgorithm, + tc.template.SignatureAlgorithm) + } + + if len(tc.template.RevokedCertificates) > 0 { + if !reflect.DeepEqual(parsedCRL.RevokedCertificates, tc.template.RevokedCertificates) { + t.Fatalf("RevokedCertificates mismatch: got %v; want %v.", + parsedCRL.RevokedCertificates, tc.template.RevokedCertificates) + } + } else { + if len(parsedCRL.RevokedCertificateEntries) != len(tc.template.RevokedCertificateEntries) { + t.Fatalf("RevokedCertificateEntries length mismatch: got %d; want %d.", + len(parsedCRL.RevokedCertificateEntries), + len(tc.template.RevokedCertificateEntries)) + } + for i, rce := range parsedCRL.RevokedCertificateEntries { + expected := tc.template.RevokedCertificateEntries[i] + if rce.SerialNumber.Cmp(expected.SerialNumber) != 0 { + t.Fatalf("RevocationListEntry serial mismatch: got %d; want %d.", + rce.SerialNumber, expected.SerialNumber) + } + if !rce.RevocationTime.Equal(expected.RevocationTime) { + t.Fatalf("RevocationListEntry revocation time mismatch: got %v; want %v.", + rce.RevocationTime, expected.RevocationTime) + } + if rce.ReasonCode != expected.ReasonCode { + t.Fatalf("RevocationListEntry reason code mismatch: got %d; want %d.", + rce.ReasonCode, expected.ReasonCode) + } + } + } + + if len(parsedCRL.Extensions) != 2+len(tc.template.ExtraExtensions) { + t.Fatalf("Generated CRL has wrong number of extensions, wanted: %d, got: %d", 2+len(tc.template.ExtraExtensions), len(parsedCRL.Extensions)) + } + expectedAKI, err := asn1.Marshal(authKeyId{Id: tc.issuer.SubjectKeyId}) + if err != nil { + t.Fatalf("asn1.Marshal failed: %s", err) + } + akiExt := pkix.Extension{ + Id: oidExtensionAuthorityKeyId, + Value: expectedAKI, + } + if !reflect.DeepEqual(parsedCRL.Extensions[0], akiExt) { + t.Fatalf("Unexpected first extension: got %v, want %v", + parsedCRL.Extensions[0], akiExt) + } + expectedNum, err := asn1.Marshal(tc.template.Number) + if err != nil { + t.Fatalf("asn1.Marshal failed: %s", err) + } + crlExt := pkix.Extension{ + Id: oidExtensionCRLNumber, + Value: expectedNum, + } + if !reflect.DeepEqual(parsedCRL.Extensions[1], crlExt) { + t.Fatalf("Unexpected second extension: got %v, want %v", + parsedCRL.Extensions[1], crlExt) + } + + // With Go 1.19's updated RevocationList, we can now directly compare + // the RawSubject of the certificate to RawIssuer on the parsed CRL. + // However, this doesn't work with our hacked issuers above (that + // aren't parsed from a proper DER bundle but are instead manually + // constructed). Prefer RawSubject when it is set. + if len(tc.issuer.RawSubject) > 0 { + issuerSubj, err := subjectBytes(tc.issuer) + if err != nil { + t.Fatalf("failed to get issuer subject: %s", err) + } + if !bytes.Equal(issuerSubj, parsedCRL.RawIssuer) { + t.Fatalf("Unexpected issuer subject; wanted: %v, got: %v", hex.EncodeToString(issuerSubj), hex.EncodeToString(parsedCRL.RawIssuer)) + } + } else { + // When we hack our custom Subject in the test cases above, + // we don't set the additional fields (such as Names) in the + // hacked issuer. Round-trip a parsing of pkix.Name so that + // we add these missing fields for the comparison. + issuerRDN := tc.issuer.Subject.ToRDNSequence() + var caIssuer pkix.Name + caIssuer.FillFromRDNSequence(&issuerRDN) + if !reflect.DeepEqual(caIssuer, parsedCRL.Issuer) { + t.Fatalf("Expected issuer.Subject, parsedCRL.Issuer to be the same; wanted: %#v, got: %#v", caIssuer, parsedCRL.Issuer) + } + } + + if len(parsedCRL.Extensions[2:]) == 0 && len(tc.template.ExtraExtensions) == 0 { + // If we don't have anything to check return early so we don't + // hit a [] != nil false positive below. + return + } + if !reflect.DeepEqual(parsedCRL.Extensions[2:], tc.template.ExtraExtensions) { + t.Fatalf("Extensions mismatch: got %v; want %v.", + parsedCRL.Extensions[2:], tc.template.ExtraExtensions) + } + + if tc.template.Number != nil && parsedCRL.Number == nil { + t.Fatalf("Generated CRL missing Number: got nil, want %s", + tc.template.Number.String()) + } + if tc.template.Number != nil && tc.template.Number.Cmp(parsedCRL.Number) != 0 { + t.Fatalf("Generated CRL has wrong Number: got %s, want %s", + parsedCRL.Number.String(), tc.template.Number.String()) + } + if !bytes.Equal(parsedCRL.AuthorityKeyId, expectedAKI) { + t.Fatalf("Generated CRL has wrong Number: got %x, want %x", + parsedCRL.AuthorityKeyId, expectedAKI) + } + }) + } +} + +func TestRSAPSAParameters(t *testing.T) { + generateParams := func(hashFunc crypto.Hash) []byte { + var hashOID asn1.ObjectIdentifier + + switch hashFunc { + case crypto.SHA256: + hashOID = oidSHA256 + case crypto.SHA384: + hashOID = oidSHA384 + case crypto.SHA512: + hashOID = oidSHA512 + } + + params := pssParameters{ + Hash: pkix.AlgorithmIdentifier{ + Algorithm: hashOID, + Parameters: asn1.NullRawValue, + }, + MGF: pkix.AlgorithmIdentifier{ + Algorithm: oidMGF1, + }, + SaltLength: hashFunc.Size(), + TrailerField: 1, + } + + mgf1Params := pkix.AlgorithmIdentifier{ + Algorithm: hashOID, + Parameters: asn1.NullRawValue, + } + + var err error + params.MGF.Parameters.FullBytes, err = asn1.Marshal(mgf1Params) + if err != nil { + t.Fatalf("failed to marshal MGF parameters: %s", err) + } + + serialized, err := asn1.Marshal(params) + if err != nil { + t.Fatalf("failed to marshal parameters: %s", err) + } + + return serialized + } + + for h, params := range hashToPSSParameters { + generated := generateParams(h) + if !bytes.Equal(params.FullBytes, generated) { + t.Errorf("hardcoded parameters for %s didn't match generated parameters: got (generated) %x, wanted (hardcoded) %x", h, generated, params.FullBytes) + } + } +} + +func TestUnknownExtKey(t *testing.T) { + const errorContains = "unknown extended key usage" + + template := &Certificate{ + SerialNumber: big.NewInt(10), + DNSNames: []string{"foo"}, + ExtKeyUsage: []ExtKeyUsage{ExtKeyUsage(-1)}, + } + signer, err := rsa.GenerateKey(rand.Reader, 1024) + if err != nil { + t.Errorf("failed to generate key for TestUnknownExtKey") + } + + _, err = CreateCertificate(rand.Reader, template, template, signer.Public(), signer) + if !strings.Contains(err.Error(), errorContains) { + t.Errorf("expected error containing %q, got %s", errorContains, err) + } +} + +func TestIA5SANEnforcement(t *testing.T) { + k, err := ecdsa.GenerateKey(elliptic.P256(), rand.Reader) + if err != nil { + t.Fatalf("ecdsa.GenerateKey failed: %s", err) + } + + testURL, err := url.Parse("https://example.com/") + if err != nil { + t.Fatalf("url.Parse failed: %s", err) + } + testURL.RawQuery = "∞" + + marshalTests := []struct { + name string + template *Certificate + expectedError string + }{ + { + name: "marshal: unicode dNSName", + template: &Certificate{ + SerialNumber: big.NewInt(0), + DNSNames: []string{"∞"}, + }, + expectedError: "x509: \"∞\" cannot be encoded as an IA5String", + }, + { + name: "marshal: unicode rfc822Name", + template: &Certificate{ + SerialNumber: big.NewInt(0), + EmailAddresses: []string{"∞"}, + }, + expectedError: "x509: \"∞\" cannot be encoded as an IA5String", + }, + { + name: "marshal: unicode uniformResourceIdentifier", + template: &Certificate{ + SerialNumber: big.NewInt(0), + URIs: []*url.URL{testURL}, + }, + expectedError: "x509: \"https://example.com/?∞\" cannot be encoded as an IA5String", + }, + } + + for _, tc := range marshalTests { + t.Run(tc.name, func(t *testing.T) { + _, err := CreateCertificate(rand.Reader, tc.template, tc.template, k.Public(), k) + if err == nil { + t.Errorf("expected CreateCertificate to fail with template: %v", tc.template) + } else if err.Error() != tc.expectedError { + t.Errorf("unexpected error: got %q, want %q", err.Error(), tc.expectedError) + } + }) + } + + unmarshalTests := []struct { + name string + cert string + expectedError string + }{ + { + name: "unmarshal: unicode dNSName", + cert: "308201083081aea003020102020100300a06082a8648ce3d04030230003022180f30303031303130313030303030305a180f30303031303130313030303030305a30003059301306072a8648ce3d020106082a8648ce3d0301070342000424bcc48180d8d9db794028f2575ebe3cac79f04d7b0d0151c5292e588aac3668c495f108c626168462e0668c9705e08a211dd103a659d2684e0adf8c2bfd47baa315301330110603551d110101ff040730058203e2889e300a06082a8648ce3d04030203490030460221008ac7827ac326a6ee0fa70b2afe99af575ec60b975f820f3c25f60fff43fbccd0022100bffeed93556722d43d13e461d5b3e33efc61f6349300327d3a0196cb6da501c2", + expectedError: "x509: SAN dNSName is malformed", + }, + { + name: "unmarshal: unicode rfc822Name", + cert: "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", + expectedError: "x509: SAN rfc822Name is malformed", + }, + { + name: "unmarshal: unicode uniformResourceIdentifier", + cert: "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", + expectedError: "x509: SAN uniformResourceIdentifier is malformed", + }, + } + + for _, tc := range unmarshalTests { + der, err := hex.DecodeString(tc.cert) + if err != nil { + t.Fatalf("failed to decode test cert: %s", err) + } + _, err = ParseCertificate(der) + if err == nil { + t.Error("expected CreateCertificate to fail") + } else if err.Error() != tc.expectedError { + t.Errorf("unexpected error: got %q, want %q", err.Error(), tc.expectedError) + } + } +} + +func BenchmarkCreateCertificate(b *testing.B) { + template := &Certificate{ + SerialNumber: big.NewInt(10), + DNSNames: []string{"example.com"}, + } + tests := []struct { + name string + gen func() crypto.Signer + }{ + { + name: "RSA 2048", + gen: func() crypto.Signer { + k, err := rsa.GenerateKey(rand.Reader, 2048) + if err != nil { + b.Fatalf("failed to generate test key: %s", err) + } + return k + }, + }, + { + name: "ECDSA P256", + gen: func() crypto.Signer { + k, err := ecdsa.GenerateKey(elliptic.P256(), rand.Reader) + if err != nil { + b.Fatalf("failed to generate test key: %s", err) + } + return k + }, + }, + } + + for _, tc := range tests { + k := tc.gen() + b.ResetTimer() + b.Run(tc.name, func(b *testing.B) { + for i := 0; i < b.N; i++ { + _, err := CreateCertificate(rand.Reader, template, template, k.Public(), k) + if err != nil { + b.Fatalf("failed to create certificate: %s", err) + } + } + }) + } +} + +type brokenSigner struct { + pub crypto.PublicKey +} + +func (bs *brokenSigner) Public() crypto.PublicKey { + return bs.pub +} + +func (bs *brokenSigner) Sign(_ io.Reader, _ []byte, _ crypto.SignerOpts) ([]byte, error) { + return []byte{1, 2, 3}, nil +} + +func TestCreateCertificateBrokenSigner(t *testing.T) { + template := &Certificate{ + SerialNumber: big.NewInt(10), + DNSNames: []string{"example.com"}, + } + k, err := rsa.GenerateKey(rand.Reader, 1024) + if err != nil { + t.Fatalf("failed to generate test key: %s", err) + } + expectedErr := "x509: signature over certificate returned by signer is invalid: crypto/rsa: verification error" + _, err = CreateCertificate(rand.Reader, template, template, k.Public(), &brokenSigner{k.Public()}) + if err == nil { + t.Fatal("expected CreateCertificate to fail with a broken signer") + } else if err.Error() != expectedErr { + t.Fatalf("CreateCertificate returned an unexpected error: got %q, want %q", err, expectedErr) + } +} + +func TestCreateCertificateLegacy(t *testing.T) { + sigAlg := MD5WithRSA + template := &Certificate{ + SerialNumber: big.NewInt(10), + DNSNames: []string{"example.com"}, + SignatureAlgorithm: sigAlg, + } + _, err := CreateCertificate(rand.Reader, template, template, testPrivateKey.Public(), &brokenSigner{testPrivateKey.Public()}) + if err == nil { + t.Fatal("CreateCertificate didn't fail when SignatureAlgorithm = MD5WithRSA") + } +} + +func (s *CertPool) mustCert(t *testing.T, n int) *Certificate { + c, err := s.lazyCerts[n].getCert() + if err != nil { + t.Fatalf("failed to load cert %d: %v", n, err) + } + return c +} + +func allCerts(t *testing.T, p *CertPool) []*Certificate { + all := make([]*Certificate, p.len()) + for i := range all { + all[i] = p.mustCert(t, i) + } + return all +} + +// certPoolEqual reports whether a and b are equal, except for the +// function pointers. +func certPoolEqual(a, b *CertPool) bool { + if (a != nil) != (b != nil) { + return false + } + if a == nil { + return true + } + if !reflect.DeepEqual(a.byName, b.byName) || + len(a.lazyCerts) != len(b.lazyCerts) { + return false + } + for i := range a.lazyCerts { + la, lb := a.lazyCerts[i], b.lazyCerts[i] + if !bytes.Equal(la.rawSubject, lb.rawSubject) { + return false + } + ca, err := la.getCert() + if err != nil { + panic(err) + } + cb, err := la.getCert() + if err != nil { + panic(err) + } + if !ca.Equal(cb) { + return false + } + } + + return true +} + +func TestCertificateRequestRoundtripFields(t *testing.T) { + urlA, err := url.Parse("https://example.com/_") + if err != nil { + t.Fatal(err) + } + urlB, err := url.Parse("https://example.org/_") + if err != nil { + t.Fatal(err) + } + in := &CertificateRequest{ + DNSNames: []string{"example.com", "example.org"}, + EmailAddresses: []string{"a@example.com", "b@example.com"}, + IPAddresses: []net.IP{net.IPv4(192, 0, 2, 0), net.IPv6loopback}, + URIs: []*url.URL{urlA, urlB}, + } + out := marshalAndParseCSR(t, in) + + if !reflect.DeepEqual(in.DNSNames, out.DNSNames) { + t.Fatalf("Unexpected DNSNames: got %v, want %v", out.DNSNames, in.DNSNames) + } + if !reflect.DeepEqual(in.EmailAddresses, out.EmailAddresses) { + t.Fatalf("Unexpected EmailAddresses: got %v, want %v", out.EmailAddresses, in.EmailAddresses) + } + if len(in.IPAddresses) != len(out.IPAddresses) || + !in.IPAddresses[0].Equal(out.IPAddresses[0]) || + !in.IPAddresses[1].Equal(out.IPAddresses[1]) { + t.Fatalf("Unexpected IPAddresses: got %v, want %v", out.IPAddresses, in.IPAddresses) + } + if !reflect.DeepEqual(in.URIs, out.URIs) { + t.Fatalf("Unexpected URIs: got %v, want %v", out.URIs, in.URIs) + } +} + +func BenchmarkParseCertificate(b *testing.B) { + cases := []struct { + name string + pem string + }{ + { + name: "ecdsa leaf", + pem: `-----BEGIN CERTIFICATE----- +MIIINjCCBx6gAwIBAgIQHdQ6oBMoe/MJAAAAAEHzmTANBgkqhkiG9w0BAQsFADBG +MQswCQYDVQQGEwJVUzEiMCAGA1UEChMZR29vZ2xlIFRydXN0IFNlcnZpY2VzIExM +QzETMBEGA1UEAxMKR1RTIENBIDFDMzAeFw0yMDEyMDgwOTExMzZaFw0yMTAzMDIw +OTExMzVaMBcxFTATBgNVBAMMDCouZ29vZ2xlLmNvbTBZMBMGByqGSM49AgEGCCqG +SM49AwEHA0IABEFYegyHh1AHRS1nar5+zYJgMACcsIQMtg0YMyK/59ml8ERIt/JF +kXM3XIvQuCJhghUawZrrAcAs8djZF1U9M4mjggYYMIIGFDAOBgNVHQ8BAf8EBAMC +B4AwEwYDVR0lBAwwCgYIKwYBBQUHAwEwDAYDVR0TAQH/BAIwADAdBgNVHQ4EFgQU +6SWWF36XBsmXJ6iV0EHPXUFoMbwwHwYDVR0jBBgwFoAUinR/r4XN7pXNPZzQ4kYU +83E1HScwagYIKwYBBQUHAQEEXjBcMCcGCCsGAQUFBzABhhtodHRwOi8vb2NzcC5w +a2kuZ29vZy9ndHMxYzMwMQYIKwYBBQUHMAKGJWh0dHA6Ly9wa2kuZ29vZy9yZXBv +L2NlcnRzL2d0czFjMy5kZXIwggTCBgNVHREEggS5MIIEtYIMKi5nb29nbGUuY29t +gg0qLmFuZHJvaWQuY29tghYqLmFwcGVuZ2luZS5nb29nbGUuY29tggkqLmJkbi5k +ZXaCEiouY2xvdWQuZ29vZ2xlLmNvbYIYKi5jcm93ZHNvdXJjZS5nb29nbGUuY29t +ghgqLmRhdGFjb21wdXRlLmdvb2dsZS5jb22CBiouZy5jb4IOKi5nY3AuZ3Z0Mi5j +b22CESouZ2NwY2RuLmd2dDEuY29tggoqLmdncGh0LmNugg4qLmdrZWNuYXBwcy5j +boIWKi5nb29nbGUtYW5hbHl0aWNzLmNvbYILKi5nb29nbGUuY2GCCyouZ29vZ2xl +LmNsgg4qLmdvb2dsZS5jby5pboIOKi5nb29nbGUuY28uanCCDiouZ29vZ2xlLmNv +LnVrgg8qLmdvb2dsZS5jb20uYXKCDyouZ29vZ2xlLmNvbS5hdYIPKi5nb29nbGUu +Y29tLmJygg8qLmdvb2dsZS5jb20uY2+CDyouZ29vZ2xlLmNvbS5teIIPKi5nb29n +bGUuY29tLnRygg8qLmdvb2dsZS5jb20udm6CCyouZ29vZ2xlLmRlggsqLmdvb2ds +ZS5lc4ILKi5nb29nbGUuZnKCCyouZ29vZ2xlLmh1ggsqLmdvb2dsZS5pdIILKi5n +b29nbGUubmyCCyouZ29vZ2xlLnBsggsqLmdvb2dsZS5wdIISKi5nb29nbGVhZGFw +aXMuY29tgg8qLmdvb2dsZWFwaXMuY26CESouZ29vZ2xlY25hcHBzLmNughQqLmdv +b2dsZWNvbW1lcmNlLmNvbYIRKi5nb29nbGV2aWRlby5jb22CDCouZ3N0YXRpYy5j +boINKi5nc3RhdGljLmNvbYISKi5nc3RhdGljY25hcHBzLmNuggoqLmd2dDEuY29t +ggoqLmd2dDIuY29tghQqLm1ldHJpYy5nc3RhdGljLmNvbYIMKi51cmNoaW4uY29t +ghAqLnVybC5nb29nbGUuY29tghMqLndlYXIuZ2tlY25hcHBzLmNughYqLnlvdXR1 +YmUtbm9jb29raWUuY29tgg0qLnlvdXR1YmUuY29tghYqLnlvdXR1YmVlZHVjYXRp +b24uY29tghEqLnlvdXR1YmVraWRzLmNvbYIHKi55dC5iZYILKi55dGltZy5jb22C +GmFuZHJvaWQuY2xpZW50cy5nb29nbGUuY29tggthbmRyb2lkLmNvbYIbZGV2ZWxv +cGVyLmFuZHJvaWQuZ29vZ2xlLmNughxkZXZlbG9wZXJzLmFuZHJvaWQuZ29vZ2xl +LmNuggRnLmNvgghnZ3BodC5jboIMZ2tlY25hcHBzLmNuggZnb28uZ2yCFGdvb2ds +ZS1hbmFseXRpY3MuY29tggpnb29nbGUuY29tgg9nb29nbGVjbmFwcHMuY26CEmdv +b2dsZWNvbW1lcmNlLmNvbYIYc291cmNlLmFuZHJvaWQuZ29vZ2xlLmNuggp1cmNo +aW4uY29tggp3d3cuZ29vLmdsggh5b3V0dS5iZYILeW91dHViZS5jb22CFHlvdXR1 +YmVlZHVjYXRpb24uY29tgg95b3V0dWJla2lkcy5jb22CBXl0LmJlMCEGA1UdIAQa +MBgwCAYGZ4EMAQIBMAwGCisGAQQB1nkCBQMwNQYDVR0fBC4wLDAqoCigJoYkaHR0 +cDovL2NybC5wa2kuZ29vZy9ndHNyMS9ndHMxYzMuY3JsMBMGCisGAQQB1nkCBAMB +Af8EAgUAMA0GCSqGSIb3DQEBCwUAA4IBAQAlDQm5zY7JcPxcJ9ulfTGsWV/m6Pro +gLYmAlBUPGKy313aetT4Zjz44ZseVtUOKsXVHh4avPA9O+ta1FgkASlbkgJ05ivb +j/+MMqkrLemdMv9Svvx3CNaAq2jJ2E+8GdrA1RzMkiNthJCiRafaPnXnN6hOHGNr +GtqYfMHsvrRHW8J2IPHW0/MUHmJ/NDu/vNchxke2OEfCPLtseo3hJt8l8HbH+yE8 +DFrt8YVRi1CLomEyuPJDF4og3O3ZsoXuxcPd9UPxULOCxycdolRw8Iv/Xgr082j3 +svXC3HUd3apM2Yy3xJAlk/mUkzVXfdJZ+Zy1huNsUoJ+gM8rmpyGhYyx +-----END CERTIFICATE-----`, + }, + { + name: "rsa leaf", + pem: `-----BEGIN CERTIFICATE----- +MIIJXjCCCEagAwIBAgIRAPYaTUsjP4iRBQAAAACHSSgwDQYJKoZIhvcNAQELBQAw +QjELMAkGA1UEBhMCVVMxHjAcBgNVBAoTFUdvb2dsZSBUcnVzdCBTZXJ2aWNlczET +MBEGA1UEAxMKR1RTIENBIDFPMTAeFw0yMTAxMjYwODQ2MzRaFw0yMTA0MjAwODQ2 +MzNaMGYxCzAJBgNVBAYTAlVTMRMwEQYDVQQIEwpDYWxpZm9ybmlhMRYwFAYDVQQH +Ew1Nb3VudGFpbiBWaWV3MRMwEQYDVQQKEwpHb29nbGUgTExDMRUwEwYDVQQDDAwq +Lmdvb2dsZS5jb20wggEiMA0GCSqGSIb3DQEBAQUAA4IBDwAwggEKAoIBAQC76xx0 +UdZ36/41rZNPfQ/yQ05vsBLUO0d+3uMOhvDlpst+XvIsG6L+vLDgf3RiQRFlei0h +KqqLOtWLDc/y0+OmaaC+8ft1zljBYdvQlAYoZrT79Cc5pAIDq7G1OZ7cC4ahDno/ +n46FHjT/UTUAMYa8cKWBaMPneMIsKvn8nMdZzHkfO2nUd6OEecn90XweMvNmx8De +6h5AlIgG3m66hkD/UCSdxn7yJHBQVdHgkfTqzv3sz2YyBQGNi288F1bn541f6khE +fYti1MvXRtkky7yLCQNUG6PtvuSU4cKaNvRklHigf5i1nVdGEuH61gAElZIklSia +OVK46UyU4DGtbdWNAgMBAAGjggYpMIIGJTAOBgNVHQ8BAf8EBAMCBaAwEwYDVR0l +BAwwCgYIKwYBBQUHAwEwDAYDVR0TAQH/BAIwADAdBgNVHQ4EFgQU8zCvllLd3jhB +k//+Wdjo40Q+T3gwHwYDVR0jBBgwFoAUmNH4bhDrz5vsYJ8YkBug630J/SswaAYI +KwYBBQUHAQEEXDBaMCsGCCsGAQUFBzABhh9odHRwOi8vb2NzcC5wa2kuZ29vZy9n +dHMxbzFjb3JlMCsGCCsGAQUFBzAChh9odHRwOi8vcGtpLmdvb2cvZ3NyMi9HVFMx +TzEuY3J0MIIE1wYDVR0RBIIEzjCCBMqCDCouZ29vZ2xlLmNvbYINKi5hbmRyb2lk +LmNvbYIWKi5hcHBlbmdpbmUuZ29vZ2xlLmNvbYIJKi5iZG4uZGV2ghIqLmNsb3Vk +Lmdvb2dsZS5jb22CGCouY3Jvd2Rzb3VyY2UuZ29vZ2xlLmNvbYIYKi5kYXRhY29t +cHV0ZS5nb29nbGUuY29tghMqLmZsYXNoLmFuZHJvaWQuY29tggYqLmcuY2+CDiou +Z2NwLmd2dDIuY29tghEqLmdjcGNkbi5ndnQxLmNvbYIKKi5nZ3BodC5jboIOKi5n +a2VjbmFwcHMuY26CFiouZ29vZ2xlLWFuYWx5dGljcy5jb22CCyouZ29vZ2xlLmNh +ggsqLmdvb2dsZS5jbIIOKi5nb29nbGUuY28uaW6CDiouZ29vZ2xlLmNvLmpwgg4q +Lmdvb2dsZS5jby51a4IPKi5nb29nbGUuY29tLmFygg8qLmdvb2dsZS5jb20uYXWC +DyouZ29vZ2xlLmNvbS5icoIPKi5nb29nbGUuY29tLmNvgg8qLmdvb2dsZS5jb20u +bXiCDyouZ29vZ2xlLmNvbS50coIPKi5nb29nbGUuY29tLnZuggsqLmdvb2dsZS5k +ZYILKi5nb29nbGUuZXOCCyouZ29vZ2xlLmZyggsqLmdvb2dsZS5odYILKi5nb29n +bGUuaXSCCyouZ29vZ2xlLm5sggsqLmdvb2dsZS5wbIILKi5nb29nbGUucHSCEiou +Z29vZ2xlYWRhcGlzLmNvbYIPKi5nb29nbGVhcGlzLmNughEqLmdvb2dsZWNuYXBw +cy5jboIUKi5nb29nbGVjb21tZXJjZS5jb22CESouZ29vZ2xldmlkZW8uY29tggwq +LmdzdGF0aWMuY26CDSouZ3N0YXRpYy5jb22CEiouZ3N0YXRpY2NuYXBwcy5jboIK +Ki5ndnQxLmNvbYIKKi5ndnQyLmNvbYIUKi5tZXRyaWMuZ3N0YXRpYy5jb22CDCou +dXJjaGluLmNvbYIQKi51cmwuZ29vZ2xlLmNvbYITKi53ZWFyLmdrZWNuYXBwcy5j +boIWKi55b3V0dWJlLW5vY29va2llLmNvbYINKi55b3V0dWJlLmNvbYIWKi55b3V0 +dWJlZWR1Y2F0aW9uLmNvbYIRKi55b3V0dWJla2lkcy5jb22CByoueXQuYmWCCyou +eXRpbWcuY29tghphbmRyb2lkLmNsaWVudHMuZ29vZ2xlLmNvbYILYW5kcm9pZC5j +b22CG2RldmVsb3Blci5hbmRyb2lkLmdvb2dsZS5jboIcZGV2ZWxvcGVycy5hbmRy +b2lkLmdvb2dsZS5jboIEZy5jb4IIZ2dwaHQuY26CDGdrZWNuYXBwcy5jboIGZ29v +LmdsghRnb29nbGUtYW5hbHl0aWNzLmNvbYIKZ29vZ2xlLmNvbYIPZ29vZ2xlY25h +cHBzLmNughJnb29nbGVjb21tZXJjZS5jb22CGHNvdXJjZS5hbmRyb2lkLmdvb2ds +ZS5jboIKdXJjaGluLmNvbYIKd3d3Lmdvby5nbIIIeW91dHUuYmWCC3lvdXR1YmUu +Y29tghR5b3V0dWJlZWR1Y2F0aW9uLmNvbYIPeW91dHViZWtpZHMuY29tggV5dC5i +ZTAhBgNVHSAEGjAYMAgGBmeBDAECAjAMBgorBgEEAdZ5AgUDMDMGA1UdHwQsMCow +KKAmoCSGImh0dHA6Ly9jcmwucGtpLmdvb2cvR1RTMU8xY29yZS5jcmwwEwYKKwYB +BAHWeQIEAwEB/wQCBQAwDQYJKoZIhvcNAQELBQADggEBAHh9/ozYUGRd+W5akWlM +4WvX808TK2oUISnagbxCCFZ2trpg2oi03CJf4o4o3Je5Qzzz10s22oQY6gPHAR0B +QHzrpqAveQw9D5vd8xjgtQ/SAujPzPKNQee5511rS7/EKW9I83ccd5XhhoEyx8A1 +/65RTS+2hKpJKTMkr0yHBPJV7kUW+n/KIef5YaSOA9VYK7hyH0niDpvm9EmoqvWS +U5xAFAe/Xrrq3sxTuDJPQA8alk6h/ql5Klkw6dL53csiPka/MevDqdifWkzuT/6n +YK/ePeJzPD17FA9V+N1rcuF3Wk29AZvCOSasdIkIuE82vGr3dfNrsrn9E9lWIbCr +Qc4= +-----END CERTIFICATE-----`, + }, + } + for _, c := range cases { + b.Run(c.name, func(b *testing.B) { + pemBlock, _ := pem.Decode([]byte(c.pem)) + b.ReportAllocs() + b.ResetTimer() + for i := 0; i < b.N; i++ { + _, err := ParseCertificate(pemBlock.Bytes) + if err != nil { + b.Fatal(err) + } + } + }) + } +} + +func TestParseCertificateRawEquals(t *testing.T) { + p, _ := pem.Decode([]byte(pemCertificate)) + cert, err := ParseCertificate(p.Bytes) + if err != nil { + t.Fatalf("failed to parse certificate: %s", err) + } + if !bytes.Equal(p.Bytes, cert.Raw) { + t.Fatalf("unexpected Certificate.Raw\ngot: %x\nwant: %x\n", cert.Raw, p.Bytes) + } +} + +// mismatchingSigAlgIDPEM contains a certificate where the Certificate +// signatureAlgorithm and the TBSCertificate signature contain +// mismatching OIDs +const mismatchingSigAlgIDPEM = `-----BEGIN CERTIFICATE----- +MIIBBzCBrqADAgECAgEAMAoGCCqGSM49BAMCMAAwIhgPMDAwMTAxMDEwMDAwMDBa +GA8wMDAxMDEwMTAwMDAwMFowADBZMBMGByqGSM49AgEGCCqGSM49AwEHA0IABOqV +EDuVXxwZgIU3+dOwv1SsMu0xuV48hf7xmK8n7sAMYgllB+96DnPqBeboJj4snYnx +0AcE0PDVQ1l4Z3YXsQWjFTATMBEGA1UdEQEB/wQHMAWCA2FzZDAKBggqhkjOPQQD +AwNIADBFAiBi1jz/T2HT5nAfrD7zsgR+68qh7Erc6Q4qlxYBOgKG4QIhAOtjIn+Q +tA+bq+55P3ntxTOVRq0nv1mwnkjwt9cQR9Fn +-----END CERTIFICATE-----` + +// mismatchingSigAlgParamPEM contains a certificate where the Certificate +// signatureAlgorithm and the TBSCertificate signature contain +// mismatching parameters +const mismatchingSigAlgParamPEM = `-----BEGIN CERTIFICATE----- +MIIBCTCBrqADAgECAgEAMAoGCCqGSM49BAMCMAAwIhgPMDAwMTAxMDEwMDAwMDBa +GA8wMDAxMDEwMTAwMDAwMFowADBZMBMGByqGSM49AgEGCCqGSM49AwEHA0IABOqV +EDuVXxwZgIU3+dOwv1SsMu0xuV48hf7xmK8n7sAMYgllB+96DnPqBeboJj4snYnx +0AcE0PDVQ1l4Z3YXsQWjFTATMBEGA1UdEQEB/wQHMAWCA2FzZDAMBggqhkjOPQQD +AgUAA0gAMEUCIGLWPP9PYdPmcB+sPvOyBH7ryqHsStzpDiqXFgE6AobhAiEA62Mi +f5C0D5ur7nk/ee3FM5VGrSe/WbCeSPC31xBH0Wc= +-----END CERTIFICATE-----` + +func TestSigAlgMismatch(t *testing.T) { + for _, certPEM := range []string{mismatchingSigAlgIDPEM, mismatchingSigAlgParamPEM} { + b, _ := pem.Decode([]byte(certPEM)) + if b == nil { + t.Fatalf("couldn't decode test certificate") + } + _, err := ParseCertificate(b.Bytes) + if err == nil { + t.Fatalf("expected ParseCertificate to fail") + } + expected := "x509: inner and outer signature algorithm identifiers don't match" + if err.Error() != expected { + t.Errorf("unexpected error from ParseCertificate: got %q, want %q", err.Error(), expected) + } + } +} + +const optionalAuthKeyIDPEM = `-----BEGIN CERTIFICATE----- +MIIFEjCCBHugAwIBAgICAQwwDQYJKoZIhvcNAQEFBQAwgbsxJDAiBgNVBAcTG1Zh +bGlDZXJ0IFZhbGlkYXRpb24gTmV0d29yazEXMBUGA1UEChMOVmFsaUNlcnQsIElu +Yy4xNTAzBgNVBAsTLFZhbGlDZXJ0IENsYXNzIDIgUG9saWN5IFZhbGlkYXRpb24g +QXV0aG9yaXR5MSEwHwYDVQQDExhodHRwOi8vd3d3LnZhbGljZXJ0LmNvbS8xIDAe +BgkqhkiG9w0BCQEWEWluZm9AdmFsaWNlcnQuY29tMB4XDTA0MDYyOTE3MzkxNloX +DTI0MDYyOTE3MzkxNlowaDELMAkGA1UEBhMCVVMxJTAjBgNVBAoTHFN0YXJmaWVs +ZCBUZWNobm9sb2dpZXMsIEluYy4xMjAwBgNVBAsTKVN0YXJmaWVsZCBDbGFzcyAy +IENlcnRpZmljYXRpb24gQXV0aG9yaXR5MIIBIDANBgkqhkiG9w0BAQEFAAOCAQ0A +MIIBCAKCAQEAtzLI/ulxpgSFrQwRZN/OTe/IAxiHP6Gr+zymn/DDodrU2G4rU5D7 +JKQ+hPCe6F/s5SdE9SimP3ve4CrwyK9TL57KBQGTHo9mHDmnTfpatnMEJWbrd3/n +WcZKmSUUVOsmx/N/GdUwcI+vsEYq/63rKe3Xn6oEh6PU+YmlNF/bQ5GCNtlmPLG4 +uYL9nDo+EMg77wZlZnqbGRg9/3FRPDAuX749d3OyXQZswyNWmiuFJpIcpwKz5D8N +rwh5grg2Peqc0zWzvGnK9cyd6P1kjReAM25eSl2ZyR6HtJ0awNVuEzUjXt+bXz3v +1vd2wuo+u3gNHEJnawTY+Nbab4vyRKABqwIBA6OCAfMwggHvMB0GA1UdDgQWBBS/ +X7fRzt0fhvRbVazc1xDCDqmI5zCB0gYDVR0jBIHKMIHHoYHBpIG+MIG7MSQwIgYD +VQQHExtWYWxpQ2VydCBWYWxpZGF0aW9uIE5ldHdvcmsxFzAVBgNVBAoTDlZhbGlD +ZXJ0LCBJbmMuMTUwMwYDVQQLEyxWYWxpQ2VydCBDbGFzcyAyIFBvbGljeSBWYWxp +ZGF0aW9uIEF1dGhvcml0eTEhMB8GA1UEAxMYaHR0cDovL3d3dy52YWxpY2VydC5j +b20vMSAwHgYJKoZIhvcNAQkBFhFpbmZvQHZhbGljZXJ0LmNvbYIBATAPBgNVHRMB +Af8EBTADAQH/MDkGCCsGAQUFBwEBBC0wKzApBggrBgEFBQcwAYYdaHR0cDovL29j +c3Auc3RhcmZpZWxkdGVjaC5jb20wSgYDVR0fBEMwQTA/oD2gO4Y5aHR0cDovL2Nl +cnRpZmljYXRlcy5zdGFyZmllbGR0ZWNoLmNvbS9yZXBvc2l0b3J5L3Jvb3QuY3Js +MFEGA1UdIARKMEgwRgYEVR0gADA+MDwGCCsGAQUFBwIBFjBodHRwOi8vY2VydGlm +aWNhdGVzLnN0YXJmaWVsZHRlY2guY29tL3JlcG9zaXRvcnkwDgYDVR0PAQH/BAQD +AgEGMA0GCSqGSIb3DQEBBQUAA4GBAKVi8afCXSWlcD284ipxs33kDTcdVWptobCr +mADkhWBKIMuh8D1195TaQ39oXCUIuNJ9MxB73HZn8bjhU3zhxoNbKXuNSm8uf0So +GkVrMgfHeMpkksK0hAzc3S1fTbvdiuo43NlmouxBulVtWmQ9twPMHOKRUJ7jCUSV +FxdzPcwl +-----END CERTIFICATE-----` + +func TestAuthKeyIdOptional(t *testing.T) { + b, _ := pem.Decode([]byte(optionalAuthKeyIDPEM)) + if b == nil { + t.Fatalf("couldn't decode test certificate") + } + _, err := ParseCertificate(b.Bytes) + if err != nil { + t.Fatalf("ParseCertificate to failed to parse certificate with optional authority key identifier fields: %s", err) + } +} + +const largeOIDPEM = ` +Certificate: + Data: + Version: 3 (0x2) + Serial Number: + da:ba:53:19:1b:09:4b:82:b2:89:26:7d:c7:6f:a0:02 + Signature Algorithm: sha256WithRSAEncryption + Issuer: O = Acme Co + Validity + Not Before: Dec 21 16:59:27 2021 GMT + Not After : Dec 21 16:59:27 2022 GMT + Subject: O = Acme Co + Subject Public Key Info: + Public Key Algorithm: rsaEncryption + RSA Public-Key: (2048 bit) + Modulus: + 00:bf:17:16:d8:bc:29:9c:16:e5:76:b4:93:15:78: + ad:6e:45:c5:4a:63:46:a1:b2:76:71:65:51:9c:14: + c4:ea:74:13:e4:34:df:2f:2c:65:11:e8:56:52:69: + 11:f9:0e:fc:77:bb:63:a8:7c:1a:c6:a1:7b:6e:6c: + e7:18:25:25:c9:e8:fb:06:7f:a2:a9:98:fe:2a:bc: + 8a:b3:75:b6:b8:7d:b6:c9:6b:29:08:32:22:10:cb: + 8d:d6:60:c8:83:ad:f5:58:91:d6:11:e8:55:56:fb: + 8f:a3:a2:9f:48:cb:79:e4:65:4a:8c:a6:52:64:9f: + 99:38:35:d4:d5:ac:6f:cf:a0:cb:42:8c:07:eb:21: + 17:31:3a:eb:91:7b:62:43:a4:75:5f:ef:a7:2f:94: + f8:69:0b:d4:ec:09:e6:00:c0:8c:dd:07:63:0b:e4: + 77:aa:60:18:3c:a0:e0:ae:0a:ea:0e:52:3b:b4:fa: + 6a:30:1b:50:62:21:73:53:33:01:60:a1:6b:99:58: + 00:f3:77:c6:0f:46:19:ca:c2:5d:cd:f5:e2:52:4d: + 84:94:23:d3:32:2f:ae:5f:da:43:a1:19:95:d2:17: + dd:49:14:b4:d9:48:1c:08:13:93:8e:d5:09:43:21: + b6:ce:52:e8:87:bb:d2:60:0d:c6:4e:bf:c5:93:6a: + c6:bf + Exponent: 65537 (0x10001) + X509v3 extensions: + X509v3 Key Usage: critical + Digital Signature, Key Encipherment + X509v3 Extended Key Usage: + TLS Web Server Authentication + X509v3 Basic Constraints: critical + CA:FALSE + X509v3 Subject Alternative Name: + DNS:longOID.example + X509v3 Certificate Policies: + Policy: 1.3.6.1.4.1.311.21.8.1492336001 + + Signature Algorithm: sha256WithRSAEncryption + 72:77:8b:de:48:fb:6d:9a:94:b1:be:d4:90:7d:4c:e6:d3:79: + fa:fb:fc:3e:d5:3d:e9:a0:ce:28:2b:2f:94:77:3f:87:f8:9c: + 9f:91:1c:f3:f6:58:91:15:6b:24:b9:ca:ae:9f:ee:ca:c8:31: + db:1a:3d:bb:6b:83:6d:bc:81:8b:a1:79:d5:3e:bb:dd:93:fe: + 35:3e:b7:99:e0:d6:eb:58:0c:fd:42:73:dc:49:da:e2:b7:ae: + 15:ee:e6:cc:aa:ef:91:41:9a:18:46:8d:4a:39:65:a2:85:3c: + 7f:0c:41:f8:0b:9c:e8:1f:35:36:60:8d:8c:e0:8e:18:b1:06: + 57:d0:4e:c4:c3:cd:8f:6f:e7:76:02:52:da:03:43:61:2b:b3: + bf:19:fd:73:0d:6a:0b:b4:b6:cb:a9:6f:70:4e:53:2a:54:07: + b3:74:fd:85:49:57:5b:23:8d:8c:6b:53:2b:09:e8:41:a5:80: + 3f:69:1b:11:d1:6b:13:35:2e:f9:d6:50:15:d9:91:38:42:43: + e9:17:af:67:d9:96:a4:d1:6a:4f:cc:b4:a7:8e:48:1f:00:72: + 69:de:4d:f1:73:a4:47:12:67:e9:f9:07:3e:79:75:90:42:b8: + d4:b5:fd:d1:7e:35:04:f7:00:04:cf:f1:36:be:0f:27:81:1f: + a6:ba:88:6c +-----BEGIN CERTIFICATE----- +MIIDHTCCAgWgAwIBAgIRANq6UxkbCUuCsokmfcdvoAIwDQYJKoZIhvcNAQELBQAw +EjEQMA4GA1UEChMHQWNtZSBDbzAeFw0yMTEyMjExNjU5MjdaFw0yMjEyMjExNjU5 +MjdaMBIxEDAOBgNVBAoTB0FjbWUgQ28wggEiMA0GCSqGSIb3DQEBAQUAA4IBDwAw +ggEKAoIBAQC/FxbYvCmcFuV2tJMVeK1uRcVKY0ahsnZxZVGcFMTqdBPkNN8vLGUR +6FZSaRH5Dvx3u2OofBrGoXtubOcYJSXJ6PsGf6KpmP4qvIqzdba4fbbJaykIMiIQ +y43WYMiDrfVYkdYR6FVW+4+jop9Iy3nkZUqMplJkn5k4NdTVrG/PoMtCjAfrIRcx +OuuRe2JDpHVf76cvlPhpC9TsCeYAwIzdB2ML5HeqYBg8oOCuCuoOUju0+mowG1Bi +IXNTMwFgoWuZWADzd8YPRhnKwl3N9eJSTYSUI9MyL65f2kOhGZXSF91JFLTZSBwI +E5OO1QlDIbbOUuiHu9JgDcZOv8WTasa/AgMBAAGjbjBsMA4GA1UdDwEB/wQEAwIF +oDATBgNVHSUEDDAKBggrBgEFBQcDATAMBgNVHRMBAf8EAjAAMBoGA1UdEQQTMBGC +D2xvbmdPSUQuZXhhbXBsZTAbBgNVHSAEFDASMBAGDisGAQQBgjcVCIXHzPsBMA0G +CSqGSIb3DQEBCwUAA4IBAQByd4veSPttmpSxvtSQfUzm03n6+/w+1T3poM4oKy+U +dz+H+JyfkRzz9liRFWskucqun+7KyDHbGj27a4NtvIGLoXnVPrvdk/41PreZ4Nbr +WAz9QnPcSdrit64V7ubMqu+RQZoYRo1KOWWihTx/DEH4C5zoHzU2YI2M4I4YsQZX +0E7Ew82Pb+d2AlLaA0NhK7O/Gf1zDWoLtLbLqW9wTlMqVAezdP2FSVdbI42Ma1Mr +CehBpYA/aRsR0WsTNS751lAV2ZE4QkPpF69n2Zak0WpPzLSnjkgfAHJp3k3xc6RH +Emfp+Qc+eXWQQrjUtf3RfjUE9wAEz/E2vg8ngR+muohs +-----END CERTIFICATE-----` + +func TestLargeOID(t *testing.T) { + // See Issue 49678. + b, _ := pem.Decode([]byte(largeOIDPEM)) + if b == nil { + t.Fatalf("couldn't decode test certificate") + } + _, err := ParseCertificate(b.Bytes) + if err != nil { + t.Fatalf("ParseCertificate to failed to parse certificate with large OID: %s", err) + } +} + +const uniqueIDPEM = `-----BEGIN CERTIFICATE----- +MIIFsDCCBJigAwIBAgIIrOyC1ydafZMwDQYJKoZIhvcNAQEFBQAwgY4xgYswgYgG +A1UEAx6BgABNAGkAYwByAG8AcwBvAGYAdAAgAEYAbwByAGUAZgByAG8AbgB0ACAA +VABNAEcAIABIAFQAVABQAFMAIABJAG4AcwBwAGUAYwB0AGkAbwBuACAAQwBlAHIA +dABpAGYAaQBjAGEAdABpAG8AbgAgAEEAdQB0AGgAbwByAGkAdAB5MB4XDTE0MDEx +ODAwNDEwMFoXDTE1MTExNTA5Mzc1NlowgZYxCzAJBgNVBAYTAklEMRAwDgYDVQQI +EwdqYWthcnRhMRIwEAYDVQQHEwlJbmRvbmVzaWExHDAaBgNVBAoTE3N0aG9ub3Jl +aG90ZWxyZXNvcnQxHDAaBgNVBAsTE3N0aG9ub3JlaG90ZWxyZXNvcnQxJTAjBgNV +BAMTHG1haWwuc3Rob25vcmVob3RlbHJlc29ydC5jb20wggEiMA0GCSqGSIb3DQEB +AQUAA4IBDwAwggEKAoIBAQCvuu0qpI+Ko2X84Twkf84cRD/rgp6vpgc5Ebejx/D4 +PEVON5edZkazrMGocK/oQqIlRxx/lefponN/chlGcllcVVPWTuFjs8k+Aat6T1qp +4iXxZekAqX+U4XZMIGJD3PckPL6G2RQSlF7/LhGCsRNRdKpMWSTbou2Ma39g52Kf +gsl3SK/GwLiWpxpcSkNQD1hugguEIsQYLxbeNwpcheXZtxbBGguPzQ7rH8c5vuKU +BkMOzaiNKLzHbBdFSrua8KWwCJg76Vdq/q36O9GlW6YgG3i+A4pCJjXWerI1lWwX +Ktk5V+SvUHGey1bkDuZKJ6myMk2pGrrPWCT7jP7WskChAgMBAAGBCQBCr1dgEleo +cKOCAfswggH3MIHDBgNVHREEgbswgbiCHG1haWwuc3Rob25vcmVob3RlbHJlc29y +dC5jb22CIGFzaGNoc3ZyLnN0aG9ub3JlaG90ZWxyZXNvcnQuY29tgiRBdXRvRGlz +Y292ZXIuc3Rob25vcmVob3RlbHJlc29ydC5jb22CHEF1dG9EaXNjb3Zlci5ob3Rl +bHJlc29ydC5jb22CCEFTSENIU1ZSghdzdGhvbm9yZWhvdGVscmVzb3J0LmNvbYIP +aG90ZWxyZXNvcnQuY29tMCEGCSsGAQQBgjcUAgQUHhIAVwBlAGIAUwBlAHIAdgBl +AHIwHQYDVR0OBBYEFMAC3UR4FwAdGekbhMgnd6lMejtbMAsGA1UdDwQEAwIFoDAT +BgNVHSUEDDAKBggrBgEFBQcDATAJBgNVHRMEAjAAMIG/BgNVHQEEgbcwgbSAFGfF +6xihk+gJJ5TfwvtWe1UFnHLQoYGRMIGOMYGLMIGIBgNVBAMegYAATQBpAGMAcgBv +AHMAbwBmAHQAIABGAG8AcgBlAGYAcgBvAG4AdAAgAFQATQBHACAASABUAFQAUABT +ACAASQBuAHMAcABlAGMAdABpAG8AbgAgAEMAZQByAHQAaQBmAGkAYwBhAHQAaQBv +AG4AIABBAHUAdABoAG8AcgBpAHQAeYIIcKhXEmBXr0IwDQYJKoZIhvcNAQEFBQAD +ggEBABlSxyCMr3+ANr+WmPSjyN5YCJBgnS0IFCwJAzIYP87bcTye/U8eQ2+E6PqG +Q7Huj7nfHEw9qnGo+HNyPp1ad3KORzXDb54c6xEoi+DeuPzYHPbn4c3hlH49I0aQ +eWW2w4RslSWpLvO6Y7Lboyz2/Thk/s2kd4RHxkkWpH2ltPqJuYYg3X6oM5+gIFHJ +WGnh+ojZ5clKvS5yXh3Wkj78M6sb32KfcBk0Hx6NkCYPt60ODYmWtvqwtw6r73u5 +TnTYWRNvo2svX69TriL+CkHY9O1Hkwf2It5zHl3gNiKTJVaak8AuEz/CKWZneovt +yYLwhUhg3PX5Co1VKYE+9TxloiE= +-----END CERTIFICATE-----` + +func TestParseUniqueID(t *testing.T) { + b, _ := pem.Decode([]byte(uniqueIDPEM)) + if b == nil { + t.Fatalf("couldn't decode test certificate") + } + cert, err := ParseCertificate(b.Bytes) + if err != nil { + t.Fatalf("ParseCertificate to failed to parse certificate with unique identifier id: %s", err) + } + if len(cert.Extensions) != 7 { + t.Fatalf("unexpected number of extensions (probably because the extension section was not parsed): got %d, want 7", len(cert.Extensions)) + } +} + +func TestDisableSHA1ForCertOnly(t *testing.T) { + t.Setenv("GODEBUG", "") + + tmpl := &Certificate{ + SerialNumber: big.NewInt(1), + NotBefore: time.Now().Add(-time.Hour), + NotAfter: time.Now().Add(time.Hour), + SignatureAlgorithm: SHA1WithRSA, + BasicConstraintsValid: true, + IsCA: true, + KeyUsage: KeyUsageCertSign | KeyUsageCRLSign, + } + certDER, err := CreateCertificate(rand.Reader, tmpl, tmpl, rsaPrivateKey.Public(), rsaPrivateKey) + if err != nil { + t.Fatalf("failed to generate test cert: %s", err) + } + cert, err := ParseCertificate(certDER) + if err != nil { + t.Fatalf("failed to parse test cert: %s", err) + } + + err = cert.CheckSignatureFrom(cert) + if err == nil { + t.Error("expected CheckSignatureFrom to fail") + } else if _, ok := err.(InsecureAlgorithmError); !ok { + t.Errorf("expected InsecureAlgorithmError error, got %T", err) + } + + crlDER, err := CreateRevocationList(rand.Reader, &RevocationList{ + SignatureAlgorithm: SHA1WithRSA, + Number: big.NewInt(1), + ThisUpdate: time.Now().Add(-time.Hour), + NextUpdate: time.Now().Add(time.Hour), + }, cert, rsaPrivateKey) + if err != nil { + t.Fatalf("failed to generate test CRL: %s", err) + } + crl, err := ParseRevocationList(crlDER) + if err != nil { + t.Fatalf("failed to parse test CRL: %s", err) + } + + if err = crl.CheckSignatureFrom(cert); err != nil { + t.Errorf("unexpected error: %s", err) + } + + // This is an unrelated OCSP response, which will fail signature verification + // but shouldn't return an InsecureAlgorithmError, since SHA1 should be allowed + // for OCSP. + ocspTBSHex := "30819fa2160414884451ff502a695e2d88f421bad90cf2cecbea7c180f32303133303631383037323434335a30743072304a300906052b0e03021a0500041448b60d38238df8456e4ee5843ea394111802979f0414884451ff502a695e2d88f421bad90cf2cecbea7c021100f78b13b946fc9635d8ab49de9d2148218000180f32303133303631383037323434335aa011180f32303133303632323037323434335a" + ocspTBS, err := hex.DecodeString(ocspTBSHex) + if err != nil { + t.Fatalf("failed to decode OCSP response TBS hex: %s", err) + } + + err = cert.CheckSignature(SHA1WithRSA, ocspTBS, nil) + if err != rsa.ErrVerification { + t.Errorf("unexpected error: %s", err) + } +} + +func TestParseRevocationList(t *testing.T) { + derBytes := fromBase64(derCRLBase64) + certList, err := ParseRevocationList(derBytes) + if err != nil { + t.Errorf("error parsing: %s", err) + return + } + numCerts := len(certList.RevokedCertificateEntries) + numCertsDeprecated := len(certList.RevokedCertificateEntries) + expected := 88 + if numCerts != expected || numCertsDeprecated != expected { + t.Errorf("bad number of revoked certificates. got: %d want: %d", numCerts, expected) + } +} + +func TestRevocationListCheckSignatureFrom(t *testing.T) { + goodKey, err := ecdsa.GenerateKey(elliptic.P224(), rand.Reader) + if err != nil { + t.Fatalf("failed to generate test key: %s", err) + } + badKey, err := ecdsa.GenerateKey(elliptic.P224(), rand.Reader) + if err != nil { + t.Fatalf("failed to generate test key: %s", err) + } + tests := []struct { + name string + issuer *Certificate + err string + }{ + { + name: "valid", + issuer: &Certificate{ + Version: 3, + BasicConstraintsValid: true, + IsCA: true, + PublicKeyAlgorithm: ECDSA, + PublicKey: goodKey.Public(), + }, + }, + { + name: "valid, key usage set", + issuer: &Certificate{ + Version: 3, + BasicConstraintsValid: true, + IsCA: true, + PublicKeyAlgorithm: ECDSA, + PublicKey: goodKey.Public(), + KeyUsage: KeyUsageCRLSign, + }, + }, + { + name: "invalid issuer, wrong key usage", + issuer: &Certificate{ + Version: 3, + BasicConstraintsValid: true, + IsCA: true, + PublicKeyAlgorithm: ECDSA, + PublicKey: goodKey.Public(), + KeyUsage: KeyUsageCertSign, + }, + err: "x509: invalid signature: parent certificate cannot sign this kind of certificate", + }, + { + name: "invalid issuer, no basic constraints/ca", + issuer: &Certificate{ + Version: 3, + PublicKeyAlgorithm: ECDSA, + PublicKey: goodKey.Public(), + }, + err: "x509: invalid signature: parent certificate cannot sign this kind of certificate", + }, + { + name: "invalid issuer, unsupported public key type", + issuer: &Certificate{ + Version: 3, + BasicConstraintsValid: true, + IsCA: true, + PublicKeyAlgorithm: UnknownPublicKeyAlgorithm, + PublicKey: goodKey.Public(), + }, + err: "x509: cannot verify signature: algorithm unimplemented", + }, + { + name: "wrong key", + issuer: &Certificate{ + Version: 3, + BasicConstraintsValid: true, + IsCA: true, + PublicKeyAlgorithm: ECDSA, + PublicKey: badKey.Public(), + }, + err: "x509: ECDSA verification failure", + }, + } + + crlIssuer := &Certificate{ + BasicConstraintsValid: true, + IsCA: true, + PublicKeyAlgorithm: ECDSA, + PublicKey: goodKey.Public(), + KeyUsage: KeyUsageCRLSign, + SubjectKeyId: []byte{1, 2, 3}, + } + for _, tc := range tests { + t.Run(tc.name, func(t *testing.T) { + crlDER, err := CreateRevocationList(rand.Reader, &RevocationList{Number: big.NewInt(1)}, crlIssuer, goodKey) + if err != nil { + t.Fatalf("failed to generate CRL: %s", err) + } + crl, err := ParseRevocationList(crlDER) + if err != nil { + t.Fatalf("failed to parse test CRL: %s", err) + } + err = crl.CheckSignatureFrom(tc.issuer) + if err != nil && err.Error() != tc.err { + t.Errorf("unexpected error: got %s, want %s", err, tc.err) + } else if err == nil && tc.err != "" { + t.Errorf("CheckSignatureFrom did not fail: want %s", tc.err) + } + }) + } +} + +func TestOmitEmptyExtensions(t *testing.T) { + k, err := ecdsa.GenerateKey(elliptic.P256(), rand.Reader) + if err != nil { + t.Fatal(err) + } + tmpl := &Certificate{ + SerialNumber: big.NewInt(1), + Subject: pkix.Name{ + CommonName: ":)", + }, + NotAfter: time.Now().Add(time.Hour), + NotBefore: time.Now().Add(-time.Hour), + } + der, err := CreateCertificate(rand.Reader, tmpl, tmpl, k.Public(), k) + if err != nil { + t.Fatal(err) + } + + emptyExtSeq := []byte{0xA3, 0x02, 0x30, 0x00} + if bytes.Contains(der, emptyExtSeq) { + t.Error("DER encoding contains the an empty extensions SEQUENCE") + } +} + +var negativeSerialCert = `-----BEGIN CERTIFICATE----- +MIIBBTCBraADAgECAgH/MAoGCCqGSM49BAMCMA0xCzAJBgNVBAMTAjopMB4XDTIy +MDQxNDIzNTYwNFoXDTIyMDQxNTAxNTYwNFowDTELMAkGA1UEAxMCOikwWTATBgcq +hkjOPQIBBggqhkjOPQMBBwNCAAQ9ezsIsj+q17K87z/PXE/rfGRN72P/Wyn5d6oo +5M0ZbSatuntMvfKdX79CQxXAxN4oXk3Aov4jVSG12AcDI8ShMAoGCCqGSM49BAMC +A0cAMEQCIBzfBU5eMPT6m5lsR6cXaJILpAaiD9YxOl4v6dT3rzEjAiBHmjnHmAss +RqUAyJKFzqZxOlK2q4j2IYnuj5+LrLGbQA== +-----END CERTIFICATE-----` + +func TestParseNegativeSerial(t *testing.T) { + pemBlock, _ := pem.Decode([]byte(negativeSerialCert)) + _, err := ParseCertificate(pemBlock.Bytes) + if err != nil { + t.Fatalf("failed to parse certificate: %s", err) + } +} + +func TestCreateNegativeSerial(t *testing.T) { + k, err := ecdsa.GenerateKey(elliptic.P256(), rand.Reader) + if err != nil { + t.Fatal(err) + } + tmpl := &Certificate{ + SerialNumber: big.NewInt(-1), + Subject: pkix.Name{ + CommonName: ":)", + }, + NotAfter: time.Now().Add(time.Hour), + NotBefore: time.Now().Add(-time.Hour), + } + expectedErr := "x509: serial number must be positive" + _, err = CreateCertificate(rand.Reader, tmpl, tmpl, k.Public(), k) + if err == nil || err.Error() != expectedErr { + t.Errorf("CreateCertificate returned unexpected error: want %q, got %q", expectedErr, err) + } +} + +const dupExtCert = `-----BEGIN CERTIFICATE----- +MIIBrjCCARegAwIBAgIBATANBgkqhkiG9w0BAQsFADAPMQ0wCwYDVQQDEwR0ZXN0 +MCIYDzAwMDEwMTAxMDAwMDAwWhgPMDAwMTAxMDEwMDAwMDBaMA8xDTALBgNVBAMT +BHRlc3QwgZ8wDQYJKoZIhvcNAQEBBQADgY0AMIGJAoGBAMiFchnHms9l9NninAIz +SkY9acwl9Bk2AtmJrNCenFpiA17AcOO5q8DJYwdXi6WPKlVgcyH+ysW8XMWkq+CP +yhtF/+LMzl9odaUF2iUy3vgTC5gxGLWH5URVssx21Und2Pm2f4xyou5IVxbS9dxy +jLvV9PEY9BIb0H+zFthjhihDAgMBAAGjFjAUMAgGAioDBAIFADAIBgIqAwQCBQAw +DQYJKoZIhvcNAQELBQADgYEAlhQ4TQQKIQ8GUyzGiN/75TCtQtjhMGemxc0cNgre +d9rmm4DjydH0t7/sMCB56lQrfhJNplguzsbjFW4l245KbNKHfLiqwEGUgZjBNKur +ot6qX/skahLtt0CNOaFIge75HVKe/69OrWQGdp18dkay/KS4Glu8YMKIjOhfrUi1 +NZA= +-----END CERTIFICATE-----` + +func TestDuplicateExtensionsCert(t *testing.T) { + b, _ := pem.Decode([]byte(dupExtCert)) + if b == nil { + t.Fatalf("couldn't decode test certificate") + } + _, err := ParseCertificate(b.Bytes) + if err == nil { + t.Fatal("ParseCertificate should fail when parsing certificate with duplicate extensions") + } +} + +const dupExtCSR = `-----BEGIN CERTIFICATE REQUEST----- +MIIBczCB3QIBADAPMQ0wCwYDVQQDEwR0ZXN0MIGfMA0GCSqGSIb3DQEBAQUAA4GN +ADCBiQKBgQC5PbxMGVJ8aLF9lq/EvGObXTRMB7ieiZL9N+DJZg1n/ECCnZLIvYrr +ZmmDV7YZsClgxKGfjJB0RQFFyZElFM9EfHEs8NJdidDKCRdIhDXQWRyhXKevHvdm +CQNKzUeoxvdHpU/uscSkw6BgUzPyLyTx9A6ye2ix94z8Y9hGOBO2DQIDAQABoCUw +IwYJKoZIhvcNAQkOMRYwFDAIBgIqAwQCBQAwCAYCKgMEAgUAMA0GCSqGSIb3DQEB +CwUAA4GBAHROEsE7URk1knXmBnQtIHwoq663vlMcX3Hes58pUy020rWP8QkocA+X +VF18/phg3p5ILlS4fcbbP2bEeV0pePo2k00FDPsJEKCBAX2LKxbU7Vp2OuV2HM2+ +VLOVx0i+/Q7fikp3hbN1JwuMTU0v2KL/IKoUcZc02+5xiYrnOIt5 +-----END CERTIFICATE REQUEST-----` + +func TestDuplicateExtensionsCSR(t *testing.T) { + b, _ := pem.Decode([]byte(dupExtCSR)) + if b == nil { + t.Fatalf("couldn't decode test CSR") + } + _, err := ParseCertificateRequest(b.Bytes) + if err == nil { + t.Fatal("ParseCertificateRequest should fail when parsing CSR with duplicate extensions") + } +} + +const dupAttCSR = `-----BEGIN CERTIFICATE REQUEST----- +MIIBbDCB1gIBADAPMQ0wCwYDVQQDEwR0ZXN0MIGfMA0GCSqGSIb3DQEBAQUAA4GN +ADCBiQKBgQCj5Po3PKO/JNuxr+B+WNfMIzqqYztdlv+mTQhT0jOR5rTkUvxeeHH8 +YclryES2dOISjaUOTmOAr5GQIIdQl4Ql33Cp7ZR/VWcRn+qvTak0Yow+xVsDo0n4 +7IcvvP6CJ7FRoYBUakVczeXLxCjLwdyK16VGJM06eRzDLykPxpPwLQIDAQABoB4w +DQYCKgMxBwwFdGVzdDEwDQYCKgMxBwwFdGVzdDIwDQYJKoZIhvcNAQELBQADgYEA +UJ8hsHxtnIeqb2ufHnQFJO+wEJhx2Uxm/BTuzHOeffuQkwATez4skZ7SlX9exgb7 +6jRMRilqb4F7f8w+uDoqxRrA9zc8mwY16zPsyBhRet+ZGbj/ilgvGmtZ21qZZ/FU +0pJFJIVLM3l49Onr5uIt5+hCWKwHlgE0nGpjKLR3cMg= +-----END CERTIFICATE REQUEST-----` + +func TestDuplicateAttributesCSR(t *testing.T) { + b, _ := pem.Decode([]byte(dupAttCSR)) + if b == nil { + t.Fatalf("couldn't decode test CSR") + } + _, err := ParseCertificateRequest(b.Bytes) + if err != nil { + t.Fatal("ParseCertificateRequest should succeed when parsing CSR with duplicate attributes") + } +} + +func TestCertificateOIDPolicies(t *testing.T) { + template := Certificate{ + SerialNumber: big.NewInt(1), + Subject: pkix.Name{CommonName: "Cert"}, + NotBefore: time.Unix(1000, 0), + NotAfter: time.Unix(100000, 0), + PolicyIdentifiers: []asn1.ObjectIdentifier{[]int{1, 2, 3}}, + } + + var expectPolicyIdentifiers = []asn1.ObjectIdentifier{ + []int{1, 2, 3}, + } + + var expectPolicies = []OID{ + mustNewOIDFromInts(t, []uint64{1, 2, 3}), + } + + certDER, err := CreateCertificate(rand.Reader, &template, &template, rsaPrivateKey.Public(), rsaPrivateKey) + if err != nil { + t.Fatalf("CreateCertificate() unexpected error: %v", err) + } + + cert, err := ParseCertificate(certDER) + if err != nil { + t.Fatalf("ParseCertificate() unexpected error: %v", err) + } + + if !slices.EqualFunc(cert.PolicyIdentifiers, expectPolicyIdentifiers, slices.Equal) { + t.Errorf("cert.PolicyIdentifiers = %v, want: %v", cert.PolicyIdentifiers, expectPolicyIdentifiers) + } + + if !slices.EqualFunc(cert.Policies, expectPolicies, OID.Equal) { + t.Errorf("cert.Policies = %v, want: %v", cert.Policies, expectPolicies) + } +} + +func TestCertificatePoliciesGODEBUG(t *testing.T) { + template := Certificate{ + SerialNumber: big.NewInt(1), + Subject: pkix.Name{CommonName: "Cert"}, + NotBefore: time.Unix(1000, 0), + NotAfter: time.Unix(100000, 0), + PolicyIdentifiers: []asn1.ObjectIdentifier{[]int{1, 2, 3}}, + Policies: []OID{mustNewOIDFromInts(t, []uint64{1, 2, math.MaxUint32 + 1})}, + } + + expectPolicies := []OID{mustNewOIDFromInts(t, []uint64{1, 2, 3})} + certDER, err := CreateCertificate(rand.Reader, &template, &template, rsaPrivateKey.Public(), rsaPrivateKey) + if err != nil { + t.Fatalf("CreateCertificate() unexpected error: %v", err) + } + + cert, err := ParseCertificate(certDER) + if err != nil { + t.Fatalf("ParseCertificate() unexpected error: %v", err) + } + + if !slices.EqualFunc(cert.Policies, expectPolicies, OID.Equal) { + t.Errorf("cert.Policies = %v, want: %v", cert.Policies, expectPolicies) + } + + t.Setenv("GODEBUG", "x509usepolicies=1") + expectPolicies = []OID{mustNewOIDFromInts(t, []uint64{1, 2, math.MaxUint32 + 1})} + + certDER, err = CreateCertificate(rand.Reader, &template, &template, rsaPrivateKey.Public(), rsaPrivateKey) + if err != nil { + t.Fatalf("CreateCertificate() unexpected error: %v", err) + } + + cert, err = ParseCertificate(certDER) + if err != nil { + t.Fatalf("ParseCertificate() unexpected error: %v", err) + } + + if !slices.EqualFunc(cert.Policies, expectPolicies, OID.Equal) { + t.Errorf("cert.Policies = %v, want: %v", cert.Policies, expectPolicies) + } +} |