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_ecdsa2_siggen_test processes NIST CAVP ECDSA2 SigGen and
16 // SigGenComponent test vector request files and emits the corresponding
17 // response.
18
19 #include <vector>
20
21 #include <openssl/bn.h>
22 #include <openssl/crypto.h>
23 #include <openssl/digest.h>
24 #include <openssl/ec_key.h>
25 #include <openssl/ecdsa.h>
26 #include <openssl/err.h>
27 #include <openssl/nid.h>
28
29 #include "../crypto/internal.h"
30 #include "../crypto/test/file_test.h"
31 #include "../crypto/test/test_util.h"
32 #include "cavp_test_util.h"
33
34
TestECDSA2SigGenImpl(FileTest * t,bool is_component)35 static bool TestECDSA2SigGenImpl(FileTest *t, bool is_component) {
36 int nid = GetECGroupNIDFromInstruction(t);
37 const EVP_MD *md = GetDigestFromInstruction(t);
38 if (nid == NID_undef || md == nullptr) {
39 return false;
40 }
41 bssl::UniquePtr<BIGNUM> qx(BN_new()), qy(BN_new());
42 bssl::UniquePtr<EC_KEY> key(EC_KEY_new_by_curve_name(nid));
43 std::vector<uint8_t> msg;
44 if (!qx || !qy || !key ||
45 !EC_KEY_generate_key_fips(key.get()) ||
46 !EC_POINT_get_affine_coordinates_GFp(EC_KEY_get0_group(key.get()),
47 EC_KEY_get0_public_key(key.get()),
48 qx.get(), qy.get(), nullptr) ||
49 !t->GetBytes(&msg, "Msg")) {
50 return false;
51 }
52
53 uint8_t digest[EVP_MAX_MD_SIZE];
54 unsigned digest_len;
55 if (is_component) {
56 if (msg.size() != EVP_MD_size(md)) {
57 t->PrintLine("Bad input length.");
58 return false;
59 }
60 digest_len = EVP_MD_size(md);
61 OPENSSL_memcpy(digest, msg.data(), msg.size());
62 } else if (!EVP_Digest(msg.data(), msg.size(), digest, &digest_len, md,
63 nullptr)) {
64 return false;
65 }
66
67 bssl::UniquePtr<ECDSA_SIG> sig(ECDSA_do_sign(digest, digest_len, key.get()));
68 if (!sig) {
69 return false;
70 }
71
72 size_t degree_len =
73 (EC_GROUP_get_degree(EC_KEY_get0_group(key.get())) + 7) / 8;
74 size_t order_len =
75 BN_num_bytes(EC_GROUP_get0_order(EC_KEY_get0_group(key.get())));
76 std::vector<uint8_t> qx_bytes(degree_len), qy_bytes(degree_len);
77 std::vector<uint8_t> r_bytes(order_len), s_bytes(order_len);
78 if (!BN_bn2bin_padded(qx_bytes.data(), qx_bytes.size(), qx.get()) ||
79 !BN_bn2bin_padded(qy_bytes.data(), qy_bytes.size(), qy.get()) ||
80 !BN_bn2bin_padded(r_bytes.data(), r_bytes.size(), sig->r) ||
81 !BN_bn2bin_padded(s_bytes.data(), s_bytes.size(), sig->s)) {
82 return false;
83 }
84
85 printf("%sQx = %s\r\nQy = %s\r\nR = %s\r\nS = %s\r\n\r\n",
86 t->CurrentTestToString().c_str(), EncodeHex(qx_bytes).c_str(),
87 EncodeHex(qy_bytes).c_str(), EncodeHex(r_bytes).c_str(),
88 EncodeHex(s_bytes).c_str());
89 return true;
90 }
91
TestECDSA2SigGen(FileTest * t,void * arg)92 static bool TestECDSA2SigGen(FileTest *t, void *arg) {
93 return TestECDSA2SigGenImpl(t, false);
94 }
95
TestECDSA2SigGenComponent(FileTest * t,void * arg)96 static bool TestECDSA2SigGenComponent(FileTest *t, void *arg) {
97 return TestECDSA2SigGenImpl(t, true);
98 }
99
cavp_ecdsa2_siggen_test_main(int argc,char ** argv)100 int cavp_ecdsa2_siggen_test_main(int argc, char **argv) {
101 if (argc != 3) {
102 fprintf(stderr, "usage: %s (SigGen|SigGenComponent) <test file>\n",
103 argv[0]);
104 return 1;
105 }
106
107 static bool (*test_func)(FileTest *, void *);
108 if (strcmp(argv[1], "SigGen") == 0) {
109 test_func = TestECDSA2SigGen;
110 } else if (strcmp(argv[1], "SigGenComponent") == 0) {
111 test_func = TestECDSA2SigGenComponent;
112 } else {
113 fprintf(stderr, "Unknown test type: %s\n", argv[1]);
114 return 1;
115 }
116
117 FileTest::Options opts;
118 opts.path = argv[2];
119 opts.callback = test_func;
120 opts.silent = true;
121 opts.comment_callback = EchoComment;
122 return FileTestMain(opts);
123 }
124