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- /* Copyright (c) 2017, Google Inc.
- *
- * Permission to use, copy, modify, and/or distribute this software for any
- * purpose with or without fee is hereby granted, provided that the above
- * copyright notice and this permission notice appear in all copies.
- *
- * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
- * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
- * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
- * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
- * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
- * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
-
- // cavp_ecdsa2_sigver_test processes a NIST CAVP ECDSA2 SigVer test vector
- // request file and emits the corresponding response.
-
- #include <vector>
-
- #include <openssl/bn.h>
- #include <openssl/crypto.h>
- #include <openssl/digest.h>
- #include <openssl/ec_key.h>
- #include <openssl/ecdsa.h>
- #include <openssl/err.h>
- #include <openssl/nid.h>
-
- #include "../crypto/test/file_test.h"
- #include "cavp_test_util.h"
-
-
- static bool TestECDSA2SigVer(FileTest *t, void *arg) {
- int nid = GetECGroupNIDFromInstruction(t);
- const EVP_MD *md = GetDigestFromInstruction(t);
- if (nid == NID_undef || md == nullptr) {
- return false;
- }
- bssl::UniquePtr<ECDSA_SIG> sig(ECDSA_SIG_new());
- bssl::UniquePtr<EC_KEY> key(EC_KEY_new_by_curve_name(nid));
- bssl::UniquePtr<BIGNUM> qx = GetBIGNUM(t, "Qx");
- bssl::UniquePtr<BIGNUM> qy = GetBIGNUM(t, "Qy");
- bssl::UniquePtr<BIGNUM> r = GetBIGNUM(t, "R");
- bssl::UniquePtr<BIGNUM> s = GetBIGNUM(t, "S");
- std::vector<uint8_t> msg;
- uint8_t digest[EVP_MAX_MD_SIZE];
- unsigned digest_len;
- if (!sig || !key || !qx || !qy || !r || !s ||
- !EC_KEY_set_public_key_affine_coordinates(key.get(), qx.get(),
- qy.get()) ||
- !t->GetBytes(&msg, "Msg") ||
- !EVP_Digest(msg.data(), msg.size(), digest, &digest_len, md, nullptr)) {
- return false;
- }
-
- BN_free(sig->r);
- sig->r = r.release();
- BN_free(sig->s);
- sig->s = s.release();
-
- if (ECDSA_do_verify(digest, digest_len, sig.get(), key.get())) {
- printf("%sResult = P\r\n\r\n", t->CurrentTestToString().c_str());
- } else {
- char buf[256];
- ERR_error_string_n(ERR_get_error(), buf, sizeof(buf));
- printf("%sResult = F (%s)\r\n\r\n", t->CurrentTestToString().c_str(), buf);
- }
- ERR_clear_error();
- return true;
- }
-
- int cavp_ecdsa2_sigver_test_main(int argc, char **argv) {
- if (argc != 2) {
- fprintf(stderr, "usage: %s <test file>\n",
- argv[0]);
- return 1;
- }
-
- printf("# Generated by");
- for (int i = 0; i < argc; i++) {
- printf(" %s", argv[i]);
- }
- printf("\r\n\r\n");
-
- return FileTestMainSilent(TestECDSA2SigVer, nullptr, argv[1]);
- }
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