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Diffstat (limited to '')
| -rw-r--r-- | regress/es256.c | 199 |
1 files changed, 199 insertions, 0 deletions
diff --git a/regress/es256.c b/regress/es256.c new file mode 100644 index 0000000..3a62a41 --- /dev/null +++ b/regress/es256.c @@ -0,0 +1,199 @@ +/* + * Copyright (c) 2022 Yubico AB. All rights reserved. + * Use of this source code is governed by a BSD-style + * license that can be found in the LICENSE file. + * SPDX-License-Identifier: BSD-2-Clause + */ + +#undef NDEBUG + +#include <assert.h> +#include <string.h> + +#define _FIDO_INTERNAL + +#include <fido.h> +#include <fido/es256.h> + +#include <openssl/bio.h> +#include <openssl/pem.h> + +#define ASSERT_NOT_NULL(e) assert((e) != NULL) +#define ASSERT_NULL(e) assert((e) == NULL) +#define ASSERT_INVAL(e) assert((e) == FIDO_ERR_INVALID_ARGUMENT) +#define ASSERT_OK(e) assert((e) == FIDO_OK) + +static const char short_x[] = \ +"-----BEGIN PUBLIC KEY-----\n" +"MFkwEwYHKoZIzj0CAQYIKoZIzj0DAQcDQgAEAAeeHTZj4LEbt7Czs+u5gEZJfnGE\n" +"6Z+YLe4AYu7SoGY7IH/2jKifsA7w+lkURL4DL63oEjd3f8foH9bX4eaVug==\n" +"-----END PUBLIC KEY-----"; + +static const char short_y[] = \ +"-----BEGIN PUBLIC KEY-----\n" +"MFkwEwYHKoZIzj0CAQYIKoZIzj0DAQcDQgAEL8CWUP1r0tpJ5QmkzLc69O74C/Ti\n" +"83hTiys/JFNVkp0ArW3pKt5jNRrgWSZYE4S/D3AMtpqifFXz/FLCzJqojQ==\n" +"-----END PUBLIC KEY-----\n"; + +static const char p256k1[] = \ +"-----BEGIN PUBLIC KEY-----\n" +"MFYwEAYHKoZIzj0CAQYFK4EEAAoDQgAEU1y8c0Jg9FGr3vYChpEo9c4dpkijriYM\n" +"QzU/DeskC89hZjLNH1Sj8ra2MsBlVGGJTNPCZSyx8Jo7ERapxdN7UQ==\n" +"-----END PUBLIC KEY-----\n"; + +static const char p256v1[] = \ +"-----BEGIN PUBLIC KEY-----\n" +"MFkwEwYHKoZIzj0CAQYIKoZIzj0DAQcDQgAEOwiq14c80b7C1Jzsx5w1zMvk2GgW\n" +"5kfGMOKXjwF/U+51ZfBDKehs3ivdeXAJBkxIh7E3iA32s+HyNqk+ntl9fg==\n" +"-----END PUBLIC KEY-----\n"; + +static const unsigned char p256k1_raw[] = { + 0x04, 0x53, 0x5c, 0xbc, 0x73, 0x42, 0x60, 0xf4, + 0x51, 0xab, 0xde, 0xf6, 0x02, 0x86, 0x91, 0x28, + 0xf5, 0xce, 0x1d, 0xa6, 0x48, 0xa3, 0xae, 0x26, + 0x0c, 0x43, 0x35, 0x3f, 0x0d, 0xeb, 0x24, 0x0b, + 0xcf, 0x61, 0x66, 0x32, 0xcd, 0x1f, 0x54, 0xa3, + 0xf2, 0xb6, 0xb6, 0x32, 0xc0, 0x65, 0x54, 0x61, + 0x89, 0x4c, 0xd3, 0xc2, 0x65, 0x2c, 0xb1, 0xf0, + 0x9a, 0x3b, 0x11, 0x16, 0xa9, 0xc5, 0xd3, 0x7b, + 0x51, +}; + +static const unsigned char p256v1_raw[] = { + 0x04, 0x3b, 0x08, 0xaa, 0xd7, 0x87, 0x3c, 0xd1, + 0xbe, 0xc2, 0xd4, 0x9c, 0xec, 0xc7, 0x9c, 0x35, + 0xcc, 0xcb, 0xe4, 0xd8, 0x68, 0x16, 0xe6, 0x47, + 0xc6, 0x30, 0xe2, 0x97, 0x8f, 0x01, 0x7f, 0x53, + 0xee, 0x75, 0x65, 0xf0, 0x43, 0x29, 0xe8, 0x6c, + 0xde, 0x2b, 0xdd, 0x79, 0x70, 0x09, 0x06, 0x4c, + 0x48, 0x87, 0xb1, 0x37, 0x88, 0x0d, 0xf6, 0xb3, + 0xe1, 0xf2, 0x36, 0xa9, 0x3e, 0x9e, 0xd9, 0x7d, + 0x7e, +}; + +static EVP_PKEY * +EVP_PKEY_from_PEM(const char *ptr, size_t len) +{ + BIO *bio = NULL; + EVP_PKEY *pkey = NULL; + + if ((bio = BIO_new(BIO_s_mem())) == NULL) { + warnx("BIO_new"); + goto out; + } + if (len > INT_MAX || BIO_write(bio, ptr, (int)len) != (int)len) { + warnx("BIO_write"); + goto out; + } + if ((pkey = PEM_read_bio_PUBKEY(bio, NULL, NULL, NULL)) == NULL) + warnx("PEM_read_bio_PUBKEY"); +out: + BIO_free(bio); + + return pkey; +} + +static int +es256_pk_cmp(const char *ptr, size_t len) +{ + EVP_PKEY *pkA = NULL; + EVP_PKEY *pkB = NULL; + es256_pk_t *k = NULL; + int r, ok = -1; + + if ((pkA = EVP_PKEY_from_PEM(ptr, len)) == NULL) { + warnx("EVP_PKEY_from_PEM"); + goto out; + } + if ((k = es256_pk_new()) == NULL) { + warnx("es256_pk_new"); + goto out; + } + if ((r = es256_pk_from_EVP_PKEY(k, pkA)) != FIDO_OK) { + warnx("es256_pk_from_EVP_PKEY: 0x%x", r); + goto out; + } + if ((pkB = es256_pk_to_EVP_PKEY(k)) == NULL) { + warnx("es256_pk_to_EVP_PKEY"); + goto out; + } + if ((r = EVP_PKEY_cmp(pkA, pkB)) != 1) { + warnx("EVP_PKEY_cmp: %d", r); + goto out; + } + + ok = 0; +out: + EVP_PKEY_free(pkA); + EVP_PKEY_free(pkB); + es256_pk_free(&k); + + return ok; +} + +static void +short_coord(void) +{ + assert(es256_pk_cmp(short_x, sizeof(short_x)) == 0); + assert(es256_pk_cmp(short_y, sizeof(short_y)) == 0); +} + +static void +invalid_curve(const unsigned char *raw, size_t raw_len) +{ + EVP_PKEY *pkey; + es256_pk_t *pk; + + ASSERT_NOT_NULL((pkey = EVP_PKEY_from_PEM(p256k1, sizeof(p256k1)))); + ASSERT_NOT_NULL((pk = es256_pk_new())); + ASSERT_INVAL(es256_pk_from_EVP_PKEY(pk, pkey)); + ASSERT_INVAL(es256_pk_from_ptr(pk, raw, raw_len)); + ASSERT_NULL(es256_pk_to_EVP_PKEY((const es256_pk_t *)raw)); + + EVP_PKEY_free(pkey); + es256_pk_free(&pk); +} + +static void +full_coord(void) +{ + assert(es256_pk_cmp(p256v1, sizeof(p256v1)) == 0); +} + +static void +valid_curve(const unsigned char *raw, size_t raw_len) +{ + EVP_PKEY *pkeyA; + EVP_PKEY *pkeyB; + es256_pk_t *pkA; + es256_pk_t *pkB; + + ASSERT_NOT_NULL((pkeyA = EVP_PKEY_from_PEM(p256v1, sizeof(p256v1)))); + ASSERT_NOT_NULL((pkA = es256_pk_new())); + ASSERT_NOT_NULL((pkB = es256_pk_new())); + ASSERT_OK(es256_pk_from_EVP_PKEY(pkA, pkeyA)); + ASSERT_OK(es256_pk_from_ptr(pkB, raw, raw_len)); + ASSERT_NOT_NULL((pkeyB = es256_pk_to_EVP_PKEY(pkB))); + assert(EVP_PKEY_cmp(pkeyA, pkeyB) == 1); + + EVP_PKEY_free(pkeyA); + EVP_PKEY_free(pkeyB); + es256_pk_free(&pkA); + es256_pk_free(&pkB); +} + +int +main(void) +{ + fido_init(0); + + short_coord(); + full_coord(); + + invalid_curve(p256k1_raw, sizeof(p256k1_raw)); /* uncompressed */ + invalid_curve(p256k1_raw + 1, sizeof(p256k1_raw) - 1); /* libfido2 */ + valid_curve(p256v1_raw, sizeof(p256v1_raw)); /* uncompressed */ + valid_curve(p256v1_raw + 1, sizeof(p256v1_raw) - 1); /* libfido2 */ + + exit(0); +} |