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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;
}
FileTest::Options opts;
opts.path = argv[1];
opts.callback = TestECDSA2SigVer;
opts.silent = true;
opts.comment_callback = EchoComment;
return FileTestMain(opts);
}
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