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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_hmac_test processes a NIST CAVP HMAC test vector request file and emits
// the corresponding response.
#include <stdlib.h>
#include <openssl/crypto.h>
#include <openssl/hmac.h>
#include "../crypto/test/file_test.h"
#include "cavp_test_util.h"
static bool TestHMAC(FileTest *t, void *arg) {
std::string md_len_str;
if (!t->GetInstruction(&md_len_str, "L")) {
return false;
}
const size_t md_len = strtoul(md_len_str.c_str(), nullptr, 0);
const EVP_MD *md;
switch (md_len) {
case 20:
md = EVP_sha1();
break;
case 28:
md = EVP_sha224();
break;
case 32:
md = EVP_sha256();
break;
case 48:
md = EVP_sha384();
break;
case 64:
md = EVP_sha512();
break;
default:
return false;
}
std::string count_str, k_len_str, t_len_str;
std::vector<uint8_t> key, msg;
if (!t->GetAttribute(&count_str, "Count") ||
!t->GetAttribute(&k_len_str, "Klen") ||
!t->GetAttribute(&t_len_str, "Tlen") ||
!t->GetBytes(&key, "Key") ||
!t->GetBytes(&msg, "Msg")) {
return false;
}
size_t k_len = strtoul(k_len_str.c_str(), nullptr, 0);
size_t t_len = strtoul(t_len_str.c_str(), nullptr, 0);
if (key.size() < k_len) {
return false;
}
unsigned out_len;
uint8_t out[EVP_MAX_MD_SIZE];
if (HMAC(md, key.data(), k_len, msg.data(), msg.size(), out, &out_len) ==
NULL) {
return false;
}
if (out_len < t_len) {
return false;
}
printf("%s", t->CurrentTestToString().c_str());
printf("Mac = %s\r\n\r\n", EncodeHex(out, t_len).c_str());
return true;
}
static int usage(char *arg) {
fprintf(stderr, "usage: %s <test file>\n", arg);
return 1;
}
int cavp_hmac_test_main(int argc, char **argv) {
if (argc != 2) {
return usage(argv[0]);
}
FileTest::Options opts;
opts.path = argv[1];
opts.callback = TestHMAC;
opts.silent = true;
opts.comment_callback = EchoComment;
return FileTestMain(opts);
}
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