mirror of
https://github.com/Telecominfraproject/OpenCellular.git
synced 2025-11-24 02:05:01 +00:00
1f81a6f936
Also, adds a simple analog of verify_data. BUG=none TEST=none Review URL: http://codereview.chromium.org/578025
69 lines
1.9 KiB
C
69 lines
1.9 KiB
C
/* Copyright (c) 2010 The Chromium OS Authors. All rights reserved.
|
|
* Use of this source code is governed by a BSD-style license that can be
|
|
* found in the LICENSE file.
|
|
*
|
|
* Utility that outputs the message digest of the contents of a file in a
|
|
* format that can be used as input to OpenSSL for an RSA signature.
|
|
* Needed until the stable OpenSSL release supports SHA-256/512 digests for
|
|
* RSA signatures.
|
|
* Outputs DigestInfo || Digest where DigestInfo is the OID depending on the
|
|
* choice of the hash algorithm (see padding.c).
|
|
*
|
|
*/
|
|
|
|
#include "signature_digest.h"
|
|
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <unistd.h>
|
|
|
|
#include "padding.h"
|
|
#include "sha.h"
|
|
#include "sha_utility.h"
|
|
|
|
uint8_t* prepend_digestinfo(int algorithm, uint8_t* digest) {
|
|
const int digest_size = hash_size_map[algorithm];
|
|
const int digestinfo_size = digestinfo_size_map[algorithm];
|
|
const uint8_t* digestinfo = hash_digestinfo_map[algorithm];
|
|
uint8_t* p = malloc(digestinfo_size + digest_size);
|
|
memcpy(p, digestinfo, digestinfo_size);
|
|
memcpy(p + digestinfo_size, digest, digest_size);
|
|
return p;
|
|
}
|
|
|
|
int main(int argc, char* argv[]) {
|
|
int i, algorithm;
|
|
uint8_t* digest = NULL;
|
|
uint8_t* signature = NULL;
|
|
uint8_t* info_digest = NULL;
|
|
|
|
if (argc != 3) {
|
|
fprintf(stderr, "Usage: %s <algorithm> <input file>\n\n",
|
|
argv[0]);
|
|
fprintf(stderr, "where <algorithm> is the signature algorithm to use:\n");
|
|
for(i = 0; i<kNumAlgorithms; i++)
|
|
fprintf(stderr, "\t%d for %s\n", i, algo_strings[i]);
|
|
return -1;
|
|
}
|
|
|
|
algorithm = atoi(argv[1]);
|
|
if (algorithm >= kNumAlgorithms) {
|
|
fprintf(stderr, "Invalid Algorithm!\n");
|
|
goto failure;
|
|
}
|
|
|
|
if (!(digest = DigestFile(argv[2], algorithm)))
|
|
goto failure;
|
|
|
|
info_digest = prepend_digestinfo(algorithm, digest);
|
|
write(1, info_digest, hash_size_map[algorithm] +
|
|
digestinfo_size_map[algorithm]);
|
|
|
|
failure:
|
|
free(digest);
|
|
free(info_digest);
|
|
free(signature);
|
|
|
|
return 0;
|
|
}
|