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regress/es384.c
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213
regress/es384.c
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/*
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* Copyright (c) 2022 Yubico AB. All rights reserved.
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* Use of this source code is governed by a BSD-style
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* license that can be found in the LICENSE file.
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#undef NDEBUG
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#include <assert.h>
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#include <string.h>
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#define _FIDO_INTERNAL
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#include <fido.h>
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#include <fido/es384.h>
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#include <openssl/bio.h>
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#include <openssl/pem.h>
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#define ASSERT_NOT_NULL(e) assert((e) != NULL)
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#define ASSERT_NULL(e) assert((e) == NULL)
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#define ASSERT_INVAL(e) assert((e) == FIDO_ERR_INVALID_ARGUMENT)
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#define ASSERT_OK(e) assert((e) == FIDO_OK)
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static const char short_x[] = \
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"-----BEGIN PUBLIC KEY-----\n"
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"MHYwEAYHKoZIzj0CAQYFK4EEACIDYgAEAAZ/VVCUmFU6aH9kJdDnUHCCglkatFTX\n"
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"onMwIvNYyS8BW/HOoZiOQLs2Hg+qifwaP1pHKILzCVfFmWuZMhxhtmjNXFuOPDnS\n"
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"Wa1PMdkCoWXA2BbXxnqL9v36gIOcFBil\n"
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"-----END PUBLIC KEY-----";
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static const char short_y[] = \
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"-----BEGIN PUBLIC KEY-----\n"
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"MHYwEAYHKoZIzj0CAQYFK4EEACIDYgAEuDpRBAg87cnWVhxbWnaWlnj100w9pm5k\n"
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"6T4eYToISaIhEK70TnGwULHX0+qHCYEGACOM7B/ZJbqjo6I7MIXaKZLemGi+tqvy\n"
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"ajBAsTVSyrYBLQjTMMcaFmYmsxvFx7pK\n"
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"-----END PUBLIC KEY-----\n";
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static const char brainpoolP384r1[] = \
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"-----BEGIN PUBLIC KEY-----\n"
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"MHowFAYHKoZIzj0CAQYJKyQDAwIIAQELA2IABFKswbBzqqyZ4h1zz8rivqHzJxAO\n"
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"XC2aLyC9x5gwBM7GVu8k6jkX7VypRpg3yyCneiIQ+vVCNXgbDchJ0cPVuhwm3Zru\n"
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"AK49dezUPahWF0YiJRFVeV+KyB/MEaaZvinzqw==\n"
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"-----END PUBLIC KEY-----\n";
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static const char secp384r1[] = \
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"-----BEGIN PUBLIC KEY-----\n"
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"MHYwEAYHKoZIzj0CAQYFK4EEACIDYgAEdJN9DoqPtTNAOmjnECHBIqnJgyBW0rct\n"
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"tbUSqQjb6UG2lldmrQJbgCP/ywuXvkkJl4yfXxOr0UP3rgcnqTVA1/46s2TG+R5u\n"
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"NSQbCM1JPQuvTyFlAn5mdR8ZJJ8yPBQm\n"
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"-----END PUBLIC KEY-----\n";
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static const unsigned char brainpoolP384r1_raw[] = {
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0x04, 0x52, 0xac, 0xc1, 0xb0, 0x73, 0xaa, 0xac,
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0x99, 0xe2, 0x1d, 0x73, 0xcf, 0xca, 0xe2, 0xbe,
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0xa1, 0xf3, 0x27, 0x10, 0x0e, 0x5c, 0x2d, 0x9a,
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0x2f, 0x20, 0xbd, 0xc7, 0x98, 0x30, 0x04, 0xce,
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0xc6, 0x56, 0xef, 0x24, 0xea, 0x39, 0x17, 0xed,
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0x5c, 0xa9, 0x46, 0x98, 0x37, 0xcb, 0x20, 0xa7,
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0x7a, 0x22, 0x10, 0xfa, 0xf5, 0x42, 0x35, 0x78,
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0x1b, 0x0d, 0xc8, 0x49, 0xd1, 0xc3, 0xd5, 0xba,
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0x1c, 0x26, 0xdd, 0x9a, 0xee, 0x00, 0xae, 0x3d,
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0x75, 0xec, 0xd4, 0x3d, 0xa8, 0x56, 0x17, 0x46,
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0x22, 0x25, 0x11, 0x55, 0x79, 0x5f, 0x8a, 0xc8,
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0x1f, 0xcc, 0x11, 0xa6, 0x99, 0xbe, 0x29, 0xf3,
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0xab,
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};
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static const unsigned char secp384r1_raw[] = {
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0x04, 0x74, 0x93, 0x7d, 0x0e, 0x8a, 0x8f, 0xb5,
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0x33, 0x40, 0x3a, 0x68, 0xe7, 0x10, 0x21, 0xc1,
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0x22, 0xa9, 0xc9, 0x83, 0x20, 0x56, 0xd2, 0xb7,
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0x2d, 0xb5, 0xb5, 0x12, 0xa9, 0x08, 0xdb, 0xe9,
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0x41, 0xb6, 0x96, 0x57, 0x66, 0xad, 0x02, 0x5b,
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0x80, 0x23, 0xff, 0xcb, 0x0b, 0x97, 0xbe, 0x49,
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0x09, 0x97, 0x8c, 0x9f, 0x5f, 0x13, 0xab, 0xd1,
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0x43, 0xf7, 0xae, 0x07, 0x27, 0xa9, 0x35, 0x40,
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0xd7, 0xfe, 0x3a, 0xb3, 0x64, 0xc6, 0xf9, 0x1e,
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0x6e, 0x35, 0x24, 0x1b, 0x08, 0xcd, 0x49, 0x3d,
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0x0b, 0xaf, 0x4f, 0x21, 0x65, 0x02, 0x7e, 0x66,
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0x75, 0x1f, 0x19, 0x24, 0x9f, 0x32, 0x3c, 0x14,
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0x26,
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};
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static EVP_PKEY *
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EVP_PKEY_from_PEM(const char *ptr, size_t len)
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{
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BIO *bio = NULL;
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EVP_PKEY *pkey = NULL;
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if ((bio = BIO_new(BIO_s_mem())) == NULL) {
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warnx("BIO_new");
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goto out;
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}
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if (len > INT_MAX || BIO_write(bio, ptr, (int)len) != (int)len) {
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warnx("BIO_write");
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goto out;
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}
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if ((pkey = PEM_read_bio_PUBKEY(bio, NULL, NULL, NULL)) == NULL)
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warnx("PEM_read_bio_PUBKEY");
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out:
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BIO_free(bio);
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return pkey;
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}
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static int
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es384_pk_cmp(const char *ptr, size_t len)
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{
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EVP_PKEY *pkA = NULL;
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EVP_PKEY *pkB = NULL;
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es384_pk_t *k = NULL;
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int r, ok = -1;
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if ((pkA = EVP_PKEY_from_PEM(ptr, len)) == NULL) {
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warnx("EVP_PKEY_from_PEM");
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goto out;
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}
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if ((k = es384_pk_new()) == NULL) {
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warnx("es384_pk_new");
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goto out;
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}
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if ((r = es384_pk_from_EVP_PKEY(k, pkA)) != FIDO_OK) {
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warnx("es384_pk_from_EVP_PKEY: 0x%x", r);
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goto out;
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}
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if ((pkB = es384_pk_to_EVP_PKEY(k)) == NULL) {
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warnx("es384_pk_to_EVP_PKEY");
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goto out;
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}
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if ((r = EVP_PKEY_cmp(pkA, pkB)) != 1) {
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warnx("EVP_PKEY_cmp: %d", r);
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goto out;
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}
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ok = 0;
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out:
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EVP_PKEY_free(pkA);
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EVP_PKEY_free(pkB);
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es384_pk_free(&k);
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return ok;
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}
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static void
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short_coord(void)
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{
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assert(es384_pk_cmp(short_x, sizeof(short_x)) == 0);
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assert(es384_pk_cmp(short_y, sizeof(short_y)) == 0);
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}
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static void
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invalid_curve(const unsigned char *raw, size_t raw_len)
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{
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EVP_PKEY *pkey;
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es384_pk_t *pk;
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pkey = EVP_PKEY_from_PEM(brainpoolP384r1, sizeof(brainpoolP384r1));
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if (pkey == NULL)
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return; /* assume no brainpool support in libcrypto */
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ASSERT_NOT_NULL((pk = es384_pk_new()));
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ASSERT_INVAL(es384_pk_from_EVP_PKEY(pk, pkey));
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ASSERT_INVAL(es384_pk_from_ptr(pk, raw, raw_len));
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ASSERT_NULL(es384_pk_to_EVP_PKEY((const es384_pk_t *)raw));
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EVP_PKEY_free(pkey);
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es384_pk_free(&pk);
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}
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static void
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full_coord(void)
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{
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assert(es384_pk_cmp(secp384r1, sizeof(secp384r1)) == 0);
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}
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static void
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valid_curve(const unsigned char *raw, size_t raw_len)
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{
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EVP_PKEY *pkeyA;
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EVP_PKEY *pkeyB;
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es384_pk_t *pkA;
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es384_pk_t *pkB;
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ASSERT_NOT_NULL((pkeyA = EVP_PKEY_from_PEM(secp384r1, sizeof(secp384r1))));
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ASSERT_NOT_NULL((pkA = es384_pk_new()));
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ASSERT_NOT_NULL((pkB = es384_pk_new()));
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ASSERT_OK(es384_pk_from_EVP_PKEY(pkA, pkeyA));
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ASSERT_OK(es384_pk_from_ptr(pkB, raw, raw_len));
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ASSERT_NOT_NULL((pkeyB = es384_pk_to_EVP_PKEY(pkB)));
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assert(EVP_PKEY_cmp(pkeyA, pkeyB) == 1);
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EVP_PKEY_free(pkeyA);
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EVP_PKEY_free(pkeyB);
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es384_pk_free(&pkA);
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es384_pk_free(&pkB);
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}
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int
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main(void)
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{
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fido_init(0);
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short_coord();
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full_coord();
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invalid_curve(brainpoolP384r1_raw, sizeof(brainpoolP384r1_raw)); /* uncompressed */
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invalid_curve(brainpoolP384r1_raw + 1, sizeof(brainpoolP384r1_raw) - 1); /* libfido2 */
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valid_curve(secp384r1_raw, sizeof(secp384r1_raw)); /* uncompressed */
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valid_curve(secp384r1_raw + 1, sizeof(secp384r1_raw) - 1); /* libfido2 */
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exit(0);
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}
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