Adding upstream version 1.18.10.upstream/1.18.10upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 223 insertions, 0 deletions

diff --git a/src/crypto/crypto.go b/src/crypto/crypto.go
new file mode 100644
index 0000000..fe1c069
--- /dev/null
+++ b/src/crypto/crypto.go
@@ -0,0 +1,223 @@
+// Copyright 2011 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 crypto collects common cryptographic constants.
+package crypto
+
+import (
+	"hash"
+	"io"
+	"strconv"
+)
+
+// Hash identifies a cryptographic hash function that is implemented in another
+// package.
+type Hash uint
+
+// HashFunc simply returns the value of h so that Hash implements SignerOpts.
+func (h Hash) HashFunc() Hash {
+	return h
+}
+
+func (h Hash) String() string {
+	switch h {
+	case MD4:
+		return "MD4"
+	case MD5:
+		return "MD5"
+	case SHA1:
+		return "SHA-1"
+	case SHA224:
+		return "SHA-224"
+	case SHA256:
+		return "SHA-256"
+	case SHA384:
+		return "SHA-384"
+	case SHA512:
+		return "SHA-512"
+	case MD5SHA1:
+		return "MD5+SHA1"
+	case RIPEMD160:
+		return "RIPEMD-160"
+	case SHA3_224:
+		return "SHA3-224"
+	case SHA3_256:
+		return "SHA3-256"
+	case SHA3_384:
+		return "SHA3-384"
+	case SHA3_512:
+		return "SHA3-512"
+	case SHA512_224:
+		return "SHA-512/224"
+	case SHA512_256:
+		return "SHA-512/256"
+	case BLAKE2s_256:
+		return "BLAKE2s-256"
+	case BLAKE2b_256:
+		return "BLAKE2b-256"
+	case BLAKE2b_384:
+		return "BLAKE2b-384"
+	case BLAKE2b_512:
+		return "BLAKE2b-512"
+	default:
+		return "unknown hash value " + strconv.Itoa(int(h))
+	}
+}
+
+const (
+	MD4         Hash = 1 + iota // import golang.org/x/crypto/md4
+	MD5                         // import crypto/md5
+	SHA1                        // import crypto/sha1
+	SHA224                      // import crypto/sha256
+	SHA256                      // import crypto/sha256
+	SHA384                      // import crypto/sha512
+	SHA512                      // import crypto/sha512
+	MD5SHA1                     // no implementation; MD5+SHA1 used for TLS RSA
+	RIPEMD160                   // import golang.org/x/crypto/ripemd160
+	SHA3_224                    // import golang.org/x/crypto/sha3
+	SHA3_256                    // import golang.org/x/crypto/sha3
+	SHA3_384                    // import golang.org/x/crypto/sha3
+	SHA3_512                    // import golang.org/x/crypto/sha3
+	SHA512_224                  // import crypto/sha512
+	SHA512_256                  // import crypto/sha512
+	BLAKE2s_256                 // import golang.org/x/crypto/blake2s
+	BLAKE2b_256                 // import golang.org/x/crypto/blake2b
+	BLAKE2b_384                 // import golang.org/x/crypto/blake2b
+	BLAKE2b_512                 // import golang.org/x/crypto/blake2b
+	maxHash
+)
+
+var digestSizes = []uint8{
+	MD4:         16,
+	MD5:         16,
+	SHA1:        20,
+	SHA224:      28,
+	SHA256:      32,
+	SHA384:      48,
+	SHA512:      64,
+	SHA512_224:  28,
+	SHA512_256:  32,
+	SHA3_224:    28,
+	SHA3_256:    32,
+	SHA3_384:    48,
+	SHA3_512:    64,
+	MD5SHA1:     36,
+	RIPEMD160:   20,
+	BLAKE2s_256: 32,
+	BLAKE2b_256: 32,
+	BLAKE2b_384: 48,
+	BLAKE2b_512: 64,
+}
+
+// Size returns the length, in bytes, of a digest resulting from the given hash
+// function. It doesn't require that the hash function in question be linked
+// into the program.
+func (h Hash) Size() int {
+	if h > 0 && h < maxHash {
+		return int(digestSizes[h])
+	}
+	panic("crypto: Size of unknown hash function")
+}
+
+var hashes = make([]func() hash.Hash, maxHash)
+
+// New returns a new hash.Hash calculating the given hash function. New panics
+// if the hash function is not linked into the binary.
+func (h Hash) New() hash.Hash {
+	if h > 0 && h < maxHash {
+		f := hashes[h]
+		if f != nil {
+			return f()
+		}
+	}
+	panic("crypto: requested hash function #" + strconv.Itoa(int(h)) + " is unavailable")
+}
+
+// Available reports whether the given hash function is linked into the binary.
+func (h Hash) Available() bool {
+	return h < maxHash && hashes[h] != nil
+}
+
+// RegisterHash registers a function that returns a new instance of the given
+// hash function. This is intended to be called from the init function in
+// packages that implement hash functions.
+func RegisterHash(h Hash, f func() hash.Hash) {
+	if h >= maxHash {
+		panic("crypto: RegisterHash of unknown hash function")
+	}
+	hashes[h] = f
+}
+
+// PublicKey represents a public key using an unspecified algorithm.
+//
+// Although this type is an empty interface for backwards compatibility reasons,
+// all public key types in the standard library implement the following interface
+//
+//     interface{
+//         Equal(x crypto.PublicKey) bool
+//     }
+//
+// which can be used for increased type safety within applications.
+type PublicKey any
+
+// PrivateKey represents a private key using an unspecified algorithm.
+//
+// Although this type is an empty interface for backwards compatibility reasons,
+// all private key types in the standard library implement the following interface
+//
+//     interface{
+//         Public() crypto.PublicKey
+//         Equal(x crypto.PrivateKey) bool
+//     }
+//
+// as well as purpose-specific interfaces such as Signer and Decrypter, which
+// can be used for increased type safety within applications.
+type PrivateKey any
+
+// Signer is an interface for an opaque private key that can be used for
+// signing operations. For example, an RSA key kept in a hardware module.
+type Signer interface {
+	// Public returns the public key corresponding to the opaque,
+	// private key.
+	Public() PublicKey
+
+	// Sign signs digest with the private key, possibly using entropy from
+	// rand. For an RSA key, the resulting signature should be either a
+	// PKCS #1 v1.5 or PSS signature (as indicated by opts). For an (EC)DSA
+	// key, it should be a DER-serialised, ASN.1 signature structure.
+	//
+	// Hash implements the SignerOpts interface and, in most cases, one can
+	// simply pass in the hash function used as opts. Sign may also attempt
+	// to type assert opts to other types in order to obtain algorithm
+	// specific values. See the documentation in each package for details.
+	//
+	// Note that when a signature of a hash of a larger message is needed,
+	// the caller is responsible for hashing the larger message and passing
+	// the hash (as digest) and the hash function (as opts) to Sign.
+	Sign(rand io.Reader, digest []byte, opts SignerOpts) (signature []byte, err error)
+}
+
+// SignerOpts contains options for signing with a Signer.
+type SignerOpts interface {
+	// HashFunc returns an identifier for the hash function used to produce
+	// the message passed to Signer.Sign, or else zero to indicate that no
+	// hashing was done.
+	HashFunc() Hash
+}
+
+// Decrypter is an interface for an opaque private key that can be used for
+// asymmetric decryption operations. An example would be an RSA key
+// kept in a hardware module.
+type Decrypter interface {
+	// Public returns the public key corresponding to the opaque,
+	// private key.
+	Public() PublicKey
+
+	// Decrypt decrypts msg. The opts argument should be appropriate for
+	// the primitive used. See the documentation in each implementation for
+	// details.
+	Decrypt(rand io.Reader, msg []byte, opts DecrypterOpts) (plaintext []byte, err error)
+}
+
+type DecrypterOpts any