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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_siggen_test processes NIST CAVP ECDSA2 SigGen and
// SigGenComponent test vector request files 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/internal.h"
#include "../crypto/test/file_test.h"
#include "cavp_test_util.h"
static bool TestECDSA2SigGenImpl(FileTest *t, bool is_component) {
int nid = GetECGroupNIDFromInstruction(t);
const EVP_MD *md = GetDigestFromInstruction(t);
if (nid == NID_undef || md == nullptr) {
return false;
}
bssl::UniquePtr<BIGNUM> qx(BN_new()), qy(BN_new());
bssl::UniquePtr<EC_KEY> key(EC_KEY_new_by_curve_name(nid));
std::vector<uint8_t> msg;
if (!qx || !qy || !key ||
!EC_KEY_generate_key_fips(key.get()) ||
!EC_POINT_get_affine_coordinates_GFp(EC_KEY_get0_group(key.get()),
EC_KEY_get0_public_key(key.get()),
qx.get(), qy.get(), nullptr) ||
!t->GetBytes(&msg, "Msg")) {
return false;
}
uint8_t digest[EVP_MAX_MD_SIZE];
unsigned digest_len;
if (is_component) {
if (msg.size() != EVP_MD_size(md)) {
t->PrintLine("Bad input length.");
return false;
}
digest_len = EVP_MD_size(md);
OPENSSL_memcpy(digest, msg.data(), msg.size());
} else if (!EVP_Digest(msg.data(), msg.size(), digest, &digest_len, md,
nullptr)) {
return false;
}
bssl::UniquePtr<ECDSA_SIG> sig(ECDSA_do_sign(digest, digest_len, key.get()));
if (!sig) {
return false;
}
size_t degree_len =
(EC_GROUP_get_degree(EC_KEY_get0_group(key.get())) + 7) / 8;
size_t order_len =
BN_num_bytes(EC_GROUP_get0_order(EC_KEY_get0_group(key.get())));
std::vector<uint8_t> qx_bytes(degree_len), qy_bytes(degree_len);
std::vector<uint8_t> r_bytes(order_len), s_bytes(order_len);
if (!BN_bn2bin_padded(qx_bytes.data(), qx_bytes.size(), qx.get()) ||
!BN_bn2bin_padded(qy_bytes.data(), qy_bytes.size(), qy.get()) ||
!BN_bn2bin_padded(r_bytes.data(), r_bytes.size(), sig->r) ||
!BN_bn2bin_padded(s_bytes.data(), s_bytes.size(), sig->s)) {
return false;
}
printf("%sQx = %s\r\nQy = %s\r\nR = %s\r\nS = %s\r\n\r\n",
t->CurrentTestToString().c_str(),
EncodeHex(qx_bytes.data(), qx_bytes.size()).c_str(),
EncodeHex(qy_bytes.data(), qy_bytes.size()).c_str(),
EncodeHex(r_bytes.data(), r_bytes.size()).c_str(),
EncodeHex(s_bytes.data(), s_bytes.size()).c_str());
return true;
}
static bool TestECDSA2SigGen(FileTest *t, void *arg) {
return TestECDSA2SigGenImpl(t, false);
}
static bool TestECDSA2SigGenComponent(FileTest *t, void *arg) {
return TestECDSA2SigGenImpl(t, true);
}
int cavp_ecdsa2_siggen_test_main(int argc, char **argv) {
if (argc != 3) {
fprintf(stderr, "usage: %s (SigGen|SigGenComponent) <test file>\n",
argv[0]);
return 1;
}
static bool (*test_func)(FileTest *, void *);
if (strcmp(argv[1], "SigGen") == 0) {
test_func = TestECDSA2SigGen;
} else if (strcmp(argv[1], "SigGenComponent") == 0) {
test_func = TestECDSA2SigGenComponent;
} else {
fprintf(stderr, "Unknown test type: %s\n", argv[1]);
return 1;
}
FileTest::Options opts;
opts.path = argv[2];
opts.callback = test_func;
opts.silent = true;
opts.comment_callback = EchoComment;
return FileTestMain(opts);
}
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