Robert Sloan | 8ff0355 | 2017-06-14 12:40:58 -0700 | [diff] [blame] | 1 | /* Copyright (c) 2017, Google Inc. |
| 2 | * |
| 3 | * Permission to use, copy, modify, and/or distribute this software for any |
| 4 | * purpose with or without fee is hereby granted, provided that the above |
| 5 | * copyright notice and this permission notice appear in all copies. |
| 6 | * |
| 7 | * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
| 8 | * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
| 9 | * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY |
| 10 | * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
| 11 | * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION |
| 12 | * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN |
| 13 | * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ |
| 14 | |
| 15 | // cavp_rsa2_siggen_test processes NIST CAVP RSA2 SigGen test vector request |
| 16 | // files and emits the corresponding response. |
| 17 | |
| 18 | #include <vector> |
| 19 | |
| 20 | #include <openssl/bn.h> |
| 21 | #include <openssl/crypto.h> |
| 22 | #include <openssl/digest.h> |
| 23 | #include <openssl/rsa.h> |
| 24 | |
| 25 | #include "../crypto/internal.h" |
| 26 | #include "../crypto/test/file_test.h" |
| 27 | #include "cavp_test_util.h" |
| 28 | |
| 29 | namespace { |
| 30 | |
| 31 | struct TestCtx { |
| 32 | bssl::UniquePtr<RSA> key; |
| 33 | bool is_pss; |
| 34 | }; |
| 35 | |
| 36 | } |
| 37 | |
| 38 | static bool TestRSA2SigGen(FileTest *t, void *arg) { |
| 39 | TestCtx *ctx = reinterpret_cast<TestCtx *>(arg); |
| 40 | |
| 41 | std::string mod_str, hash; |
| 42 | std::vector<uint8_t> msg; |
| 43 | if (!t->GetInstruction(&mod_str, "mod") || |
| 44 | !t->GetAttribute(&hash, "SHAAlg") || |
| 45 | !t->GetBytes(&msg, "Msg")) { |
| 46 | return false; |
| 47 | } |
| 48 | |
| 49 | std::string test = t->CurrentTestToString(); |
| 50 | if (t->IsAtNewInstructionBlock()) { |
| 51 | int mod_bits = strtoul(mod_str.c_str(), nullptr, 0); |
| 52 | ctx->key = bssl::UniquePtr<RSA>(RSA_new()); |
| 53 | if (ctx->key == nullptr || |
| 54 | mod_bits == 0 || |
| 55 | !RSA_generate_key_fips(ctx->key.get(), mod_bits, nullptr)) { |
| 56 | return false; |
| 57 | } |
| 58 | |
| 59 | const BIGNUM *n, *e; |
| 60 | RSA_get0_key(ctx->key.get(), &n, &e, nullptr); |
| 61 | |
| 62 | std::vector<uint8_t> n_bytes(BN_num_bytes(n)); |
| 63 | std::vector<uint8_t> e_bytes(BN_num_bytes(e)); |
| 64 | if (!BN_bn2bin_padded(n_bytes.data(), n_bytes.size(), n) || |
| 65 | !BN_bn2bin_padded(e_bytes.data(), e_bytes.size(), e)) { |
| 66 | return false; |
| 67 | } |
| 68 | |
| 69 | printf("[mod = %s]\r\n\r\nn = %s\r\n\r\ne = %s", |
| 70 | mod_str.c_str(), |
| 71 | EncodeHex(n_bytes.data(), n_bytes.size()).c_str(), |
| 72 | EncodeHex(e_bytes.data(), e_bytes.size()).c_str()); |
| 73 | test = test.substr(test.find("]") + 3); |
| 74 | } |
| 75 | |
| 76 | const EVP_MD *md = EVP_get_digestbyname(hash.c_str()); |
| 77 | uint8_t digest_buf[EVP_MAX_MD_SIZE]; |
| 78 | std::vector<uint8_t> sig(RSA_size(ctx->key.get())); |
| 79 | unsigned digest_len; |
| 80 | size_t sig_len; |
| 81 | if (md == NULL || |
| 82 | !EVP_Digest(msg.data(), msg.size(), digest_buf, &digest_len, md, NULL)) { |
| 83 | return false; |
| 84 | } |
| 85 | |
| 86 | if (ctx->is_pss) { |
| 87 | if (!RSA_sign_pss_mgf1(ctx->key.get(), &sig_len, sig.data(), sig.size(), |
| 88 | digest_buf, digest_len, md, md, -1)) { |
| 89 | return false; |
| 90 | } |
| 91 | } else { |
| 92 | unsigned sig_len_u; |
| 93 | if (!RSA_sign(EVP_MD_type(md), digest_buf, digest_len, sig.data(), |
| 94 | &sig_len_u, ctx->key.get())) { |
| 95 | return false; |
| 96 | } |
| 97 | sig_len = sig_len_u; |
| 98 | } |
| 99 | |
| 100 | printf("%sS = %s\r\n\r\n", test.c_str(), |
| 101 | EncodeHex(sig.data(), sig_len).c_str()); |
| 102 | return true; |
| 103 | } |
| 104 | |
| 105 | int cavp_rsa2_siggen_test_main(int argc, char **argv) { |
| 106 | if (argc != 3) { |
| 107 | fprintf(stderr, "usage: %s (pkcs15|pss) <test file>\n", |
| 108 | argv[0]); |
| 109 | return 1; |
| 110 | } |
| 111 | |
| 112 | TestCtx ctx; |
| 113 | if (strcmp(argv[1], "pkcs15") == 0) { |
| 114 | ctx = {nullptr, false}; |
| 115 | } else if (strcmp(argv[1], "pss") == 0) { |
| 116 | ctx = {nullptr, true}; |
| 117 | } else { |
| 118 | fprintf(stderr, "Unknown test type: %s\n", argv[1]); |
| 119 | return 1; |
| 120 | } |
| 121 | |
| 122 | FileTest::Options opts; |
| 123 | opts.path = argv[2]; |
| 124 | opts.callback = TestRSA2SigGen; |
| 125 | opts.arg = &ctx; |
| 126 | opts.silent = true; |
| 127 | opts.comment_callback = EchoComment; |
| 128 | return FileTestMain(opts); |
| 129 | } |