/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) * All rights reserved. * * This package is an SSL implementation written * by Eric Young (eay@cryptsoft.com). * The implementation was written so as to conform with Netscapes SSL. * * This library is free for commercial and non-commercial use as long as * the following conditions are aheared to. The following conditions * apply to all code found in this distribution, be it the RC4, RSA, * lhash, DES, etc., code; not just the SSL code. The SSL documentation * included with this distribution is covered by the same copyright terms * except that the holder is Tim Hudson (tjh@cryptsoft.com). * * Copyright remains Eric Young's, and as such any Copyright notices in * the code are not to be removed. * If this package is used in a product, Eric Young should be given attribution * as the author of the parts of the library used. * This can be in the form of a textual message at program startup or * in documentation (online or textual) provided with the package. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * "This product includes cryptographic software written by * Eric Young (eay@cryptsoft.com)" * The word 'cryptographic' can be left out if the rouines from the library * being used are not cryptographic related :-). * 4. If you include any Windows specific code (or a derivative thereof) from * the apps directory (application code) you must include an acknowledgement: * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" * * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * The licence and distribution terms for any publically available version or * derivative of this code cannot be changed. i.e. this code cannot simply be * copied and put under another distribution licence * [including the GNU Public Licence.] * * The DSS routines are based on patches supplied by * Steven Schoch . */ #include #include #include #include #include #include #include #include #include "../internal.h" // The following values are taken from the updated Appendix 5 to FIPS PUB 186 // and also appear in Appendix 5 to FIPS PUB 186-1. static const uint8_t seed[20] = { 0xd5, 0x01, 0x4e, 0x4b, 0x60, 0xef, 0x2b, 0xa8, 0xb6, 0x21, 0x1b, 0x40, 0x62, 0xba, 0x32, 0x24, 0xe0, 0x42, 0x7d, 0xd3, }; static const uint8_t fips_p[] = { 0x8d, 0xf2, 0xa4, 0x94, 0x49, 0x22, 0x76, 0xaa, 0x3d, 0x25, 0x75, 0x9b, 0xb0, 0x68, 0x69, 0xcb, 0xea, 0xc0, 0xd8, 0x3a, 0xfb, 0x8d, 0x0c, 0xf7, 0xcb, 0xb8, 0x32, 0x4f, 0x0d, 0x78, 0x82, 0xe5, 0xd0, 0x76, 0x2f, 0xc5, 0xb7, 0x21, 0x0e, 0xaf, 0xc2, 0xe9, 0xad, 0xac, 0x32, 0xab, 0x7a, 0xac, 0x49, 0x69, 0x3d, 0xfb, 0xf8, 0x37, 0x24, 0xc2, 0xec, 0x07, 0x36, 0xee, 0x31, 0xc8, 0x02, 0x91, }; static const uint8_t fips_q[] = { 0xc7, 0x73, 0x21, 0x8c, 0x73, 0x7e, 0xc8, 0xee, 0x99, 0x3b, 0x4f, 0x2d, 0xed, 0x30, 0xf4, 0x8e, 0xda, 0xce, 0x91, 0x5f, }; static const uint8_t fips_g[] = { 0x62, 0x6d, 0x02, 0x78, 0x39, 0xea, 0x0a, 0x13, 0x41, 0x31, 0x63, 0xa5, 0x5b, 0x4c, 0xb5, 0x00, 0x29, 0x9d, 0x55, 0x22, 0x95, 0x6c, 0xef, 0xcb, 0x3b, 0xff, 0x10, 0xf3, 0x99, 0xce, 0x2c, 0x2e, 0x71, 0xcb, 0x9d, 0xe5, 0xfa, 0x24, 0xba, 0xbf, 0x58, 0xe5, 0xb7, 0x95, 0x21, 0x92, 0x5c, 0x9c, 0xc4, 0x2e, 0x9f, 0x6f, 0x46, 0x4b, 0x08, 0x8c, 0xc5, 0x72, 0xaf, 0x53, 0xe6, 0xd7, 0x88, 0x02, }; static const uint8_t fips_x[] = { 0x20, 0x70, 0xb3, 0x22, 0x3d, 0xba, 0x37, 0x2f, 0xde, 0x1c, 0x0f, 0xfc, 0x7b, 0x2e, 0x3b, 0x49, 0x8b, 0x26, 0x06, 0x14, }; static const uint8_t fips_y[] = { 0x19, 0x13, 0x18, 0x71, 0xd7, 0x5b, 0x16, 0x12, 0xa8, 0x19, 0xf2, 0x9d, 0x78, 0xd1, 0xb0, 0xd7, 0x34, 0x6f, 0x7a, 0xa7, 0x7b, 0xb6, 0x2a, 0x85, 0x9b, 0xfd, 0x6c, 0x56, 0x75, 0xda, 0x9d, 0x21, 0x2d, 0x3a, 0x36, 0xef, 0x16, 0x72, 0xef, 0x66, 0x0b, 0x8c, 0x7c, 0x25, 0x5c, 0xc0, 0xec, 0x74, 0x85, 0x8f, 0xba, 0x33, 0xf4, 0x4c, 0x06, 0x69, 0x96, 0x30, 0xa7, 0x6b, 0x03, 0x0e, 0xe3, 0x33, }; static const uint8_t fips_digest[] = { 0xa9, 0x99, 0x3e, 0x36, 0x47, 0x06, 0x81, 0x6a, 0xba, 0x3e, 0x25, 0x71, 0x78, 0x50, 0xc2, 0x6c, 0x9c, 0xd0, 0xd8, 0x9d, }; // fips_sig is a DER-encoded version of the r and s values in FIPS PUB 186-1. static const uint8_t fips_sig[] = { 0x30, 0x2d, 0x02, 0x15, 0x00, 0x8b, 0xac, 0x1a, 0xb6, 0x64, 0x10, 0x43, 0x5c, 0xb7, 0x18, 0x1f, 0x95, 0xb1, 0x6a, 0xb9, 0x7c, 0x92, 0xb3, 0x41, 0xc0, 0x02, 0x14, 0x41, 0xe2, 0x34, 0x5f, 0x1f, 0x56, 0xdf, 0x24, 0x58, 0xf4, 0x26, 0xd1, 0x55, 0xb4, 0xba, 0x2d, 0xb6, 0xdc, 0xd8, 0xc8, }; // fips_sig_negative is fips_sig with r encoded as a negative number. static const uint8_t fips_sig_negative[] = { 0x30, 0x2c, 0x02, 0x14, 0x8b, 0xac, 0x1a, 0xb6, 0x64, 0x10, 0x43, 0x5c, 0xb7, 0x18, 0x1f, 0x95, 0xb1, 0x6a, 0xb9, 0x7c, 0x92, 0xb3, 0x41, 0xc0, 0x02, 0x14, 0x41, 0xe2, 0x34, 0x5f, 0x1f, 0x56, 0xdf, 0x24, 0x58, 0xf4, 0x26, 0xd1, 0x55, 0xb4, 0xba, 0x2d, 0xb6, 0xdc, 0xd8, 0xc8, }; // fip_sig_extra is fips_sig with trailing data. static const uint8_t fips_sig_extra[] = { 0x30, 0x2d, 0x02, 0x15, 0x00, 0x8b, 0xac, 0x1a, 0xb6, 0x64, 0x10, 0x43, 0x5c, 0xb7, 0x18, 0x1f, 0x95, 0xb1, 0x6a, 0xb9, 0x7c, 0x92, 0xb3, 0x41, 0xc0, 0x02, 0x14, 0x41, 0xe2, 0x34, 0x5f, 0x1f, 0x56, 0xdf, 0x24, 0x58, 0xf4, 0x26, 0xd1, 0x55, 0xb4, 0xba, 0x2d, 0xb6, 0xdc, 0xd8, 0xc8, 0x00, }; // fips_sig_lengths is fips_sig with a non-minimally encoded length. static const uint8_t fips_sig_bad_length[] = { 0x30, 0x81, 0x2d, 0x02, 0x15, 0x00, 0x8b, 0xac, 0x1a, 0xb6, 0x64, 0x10, 0x43, 0x5c, 0xb7, 0x18, 0x1f, 0x95, 0xb1, 0x6a, 0xb9, 0x7c, 0x92, 0xb3, 0x41, 0xc0, 0x02, 0x14, 0x41, 0xe2, 0x34, 0x5f, 0x1f, 0x56, 0xdf, 0x24, 0x58, 0xf4, 0x26, 0xd1, 0x55, 0xb4, 0xba, 0x2d, 0xb6, 0xdc, 0xd8, 0xc8, 0x00, }; // fips_sig_bad_r is fips_sig with a bad r value. static const uint8_t fips_sig_bad_r[] = { 0x30, 0x2d, 0x02, 0x15, 0x00, 0x8c, 0xac, 0x1a, 0xb6, 0x64, 0x10, 0x43, 0x5c, 0xb7, 0x18, 0x1f, 0x95, 0xb1, 0x6a, 0xb9, 0x7c, 0x92, 0xb3, 0x41, 0xc0, 0x02, 0x14, 0x41, 0xe2, 0x34, 0x5f, 0x1f, 0x56, 0xdf, 0x24, 0x58, 0xf4, 0x26, 0xd1, 0x55, 0xb4, 0xba, 0x2d, 0xb6, 0xdc, 0xd8, 0xc8, }; static bssl::UniquePtr GetFIPSDSA(void) { bssl::UniquePtr dsa(DSA_new()); if (!dsa) { return nullptr; } dsa->p = BN_bin2bn(fips_p, sizeof(fips_p), nullptr); dsa->q = BN_bin2bn(fips_q, sizeof(fips_q), nullptr); dsa->g = BN_bin2bn(fips_g, sizeof(fips_g), nullptr); dsa->pub_key = BN_bin2bn(fips_y, sizeof(fips_y), nullptr); dsa->priv_key = BN_bin2bn(fips_x, sizeof(fips_x), nullptr); if (dsa->p == nullptr || dsa->q == nullptr || dsa->g == nullptr || dsa->pub_key == nullptr || dsa->priv_key == nullptr) { return nullptr; } return dsa; } struct GenerateContext { FILE *out = nullptr; int ok = 0; int num = 0; }; static int GenerateCallback(int p, int n, BN_GENCB *arg) { GenerateContext *ctx = reinterpret_cast(arg->arg); char c = '*'; switch (p) { case 0: c = '.'; ctx->num++; break; case 1: c = '+'; break; case 2: c = '*'; ctx->ok++; break; case 3: c = '\n'; } fputc(c, ctx->out); fflush(ctx->out); if (!ctx->ok && p == 0 && ctx->num > 1) { fprintf(stderr, "error in dsatest\n"); return 0; } return 1; } static int TestGenerate(FILE *out) { BN_GENCB cb; int counter, i, j; uint8_t buf[256]; unsigned long h; uint8_t sig[256]; unsigned int siglen; fprintf(out, "test generation of DSA parameters\n"); GenerateContext ctx; ctx.out = out; BN_GENCB_set(&cb, GenerateCallback, &ctx); bssl::UniquePtr dsa(DSA_new()); if (!dsa || !DSA_generate_parameters_ex(dsa.get(), 512, seed, 20, &counter, &h, &cb)) { return false; } fprintf(out, "seed\n"); for (i = 0; i < 20; i += 4) { fprintf(out, "%02X%02X%02X%02X ", seed[i], seed[i + 1], seed[i + 2], seed[i + 3]); } fprintf(out, "\ncounter=%d h=%lu\n", counter, h); if (counter != 105) { fprintf(stderr, "counter should be 105\n"); return false; } if (h != 2) { fprintf(stderr, "h should be 2\n"); return false; } i = BN_bn2bin(dsa->q, buf); j = sizeof(fips_q); if (i != j || OPENSSL_memcmp(buf, fips_q, i) != 0) { fprintf(stderr, "q value is wrong\n"); return false; } i = BN_bn2bin(dsa->p, buf); j = sizeof(fips_p); if (i != j || OPENSSL_memcmp(buf, fips_p, i) != 0) { fprintf(stderr, "p value is wrong\n"); return false; } i = BN_bn2bin(dsa->g, buf); j = sizeof(fips_g); if (i != j || OPENSSL_memcmp(buf, fips_g, i) != 0) { fprintf(stderr, "g value is wrong\n"); return false; } if (!DSA_generate_key(dsa.get()) || !DSA_sign(0, fips_digest, sizeof(fips_digest), sig, &siglen, dsa.get())) { return false; } if (DSA_verify(0, fips_digest, sizeof(fips_digest), sig, siglen, dsa.get()) != 1) { fprintf(stderr, "verification failure\n"); return false; } return true; } static bool TestVerify(const uint8_t *sig, size_t sig_len, int expect) { bssl::UniquePtr dsa = GetFIPSDSA(); if (!dsa) { return false; } int ret = DSA_verify(0, fips_digest, sizeof(fips_digest), sig, sig_len, dsa.get()); if (ret != expect) { fprintf(stderr, "DSA_verify returned %d, want %d\n", ret, expect); return false; } // Clear any errors from a test with expected failure. ERR_clear_error(); return true; } // TODO(davidben): Convert this file to GTest properly. TEST(DSATest, AllTests) { if (!TestGenerate(stdout) || !TestVerify(fips_sig, sizeof(fips_sig), 1) || !TestVerify(fips_sig_negative, sizeof(fips_sig_negative), -1) || !TestVerify(fips_sig_extra, sizeof(fips_sig_extra), -1) || !TestVerify(fips_sig_bad_length, sizeof(fips_sig_bad_length), -1) || !TestVerify(fips_sig_bad_r, sizeof(fips_sig_bad_r), 0)) { ADD_FAILURE() << "Tests failed"; } } TEST(DSATest, InvalidGroup) { bssl::UniquePtr dsa = GetFIPSDSA(); ASSERT_TRUE(dsa); BN_zero(dsa->g); std::vector sig(DSA_size(dsa.get())); unsigned sig_len; static const uint8_t kDigest[32] = {0}; EXPECT_FALSE( DSA_sign(0, kDigest, sizeof(kDigest), sig.data(), &sig_len, dsa.get())); uint32_t err = ERR_get_error(); EXPECT_EQ(ERR_LIB_DSA, ERR_GET_LIB(err)); EXPECT_EQ(DSA_R_INVALID_PARAMETERS, ERR_GET_REASON(err)); }