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_sigver_test processes a NIST CAVP ECDSA2 SigVer test vector
16 // request file 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/ec_key.h>
24 #include <openssl/ecdsa.h>
25 #include <openssl/err.h>
26 #include <openssl/nid.h>
27
28 #include "../crypto/test/file_test.h"
29 #include "cavp_test_util.h"
30
31
TestECDSA2SigVer(FileTest * t,void * arg)32 static bool TestECDSA2SigVer(FileTest *t, void *arg) {
33 int nid = GetECGroupNIDFromInstruction(t);
34 const EVP_MD *md = GetDigestFromInstruction(t);
35 if (nid == NID_undef || md == nullptr) {
36 return false;
37 }
38 bssl::UniquePtr<ECDSA_SIG> sig(ECDSA_SIG_new());
39 bssl::UniquePtr<EC_KEY> key(EC_KEY_new_by_curve_name(nid));
40 bssl::UniquePtr<BIGNUM> qx = GetBIGNUM(t, "Qx");
41 bssl::UniquePtr<BIGNUM> qy = GetBIGNUM(t, "Qy");
42 bssl::UniquePtr<BIGNUM> r = GetBIGNUM(t, "R");
43 bssl::UniquePtr<BIGNUM> s = GetBIGNUM(t, "S");
44 std::vector<uint8_t> msg;
45 uint8_t digest[EVP_MAX_MD_SIZE];
46 unsigned digest_len;
47 if (!sig || !key || !qx || !qy || !r || !s ||
48 !EC_KEY_set_public_key_affine_coordinates(key.get(), qx.get(),
49 qy.get()) ||
50 !t->GetBytes(&msg, "Msg") ||
51 !EVP_Digest(msg.data(), msg.size(), digest, &digest_len, md, nullptr)) {
52 return false;
53 }
54
55 BN_free(sig->r);
56 sig->r = r.release();
57 BN_free(sig->s);
58 sig->s = s.release();
59
60 if (ECDSA_do_verify(digest, digest_len, sig.get(), key.get())) {
61 printf("%sResult = P\r\n\r\n", t->CurrentTestToString().c_str());
62 } else {
63 char buf[256];
64 ERR_error_string_n(ERR_get_error(), buf, sizeof(buf));
65 printf("%sResult = F (%s)\r\n\r\n", t->CurrentTestToString().c_str(), buf);
66 }
67 ERR_clear_error();
68 return true;
69 }
70
cavp_ecdsa2_sigver_test_main(int argc,char ** argv)71 int cavp_ecdsa2_sigver_test_main(int argc, char **argv) {
72 if (argc != 2) {
73 fprintf(stderr, "usage: %s <test file>\n",
74 argv[0]);
75 return 1;
76 }
77
78 FileTest::Options opts;
79 opts.path = argv[1];
80 opts.callback = TestECDSA2SigVer;
81 opts.silent = true;
82 opts.comment_callback = EchoComment;
83 return FileTestMain(opts);
84 }
85