| /* Copyright (c) 2011 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 for to generate a padded hash suitable for generating |
| * PKCS#1.5 signatures. |
| */ |
| |
| |
| #include <stdio.h> |
| #include <stdlib.h> |
| |
| #include "file_keys.h" |
| #include "padding.h" |
| #include "signature_digest.h" |
| #include "utility.h" |
| |
| int main(int argc, char* argv[]) { |
| int algorithm = -1; |
| int error_code = 0; |
| uint8_t* digest = NULL; |
| uint8_t* padded_digest = NULL; |
| uint64_t len; |
| uint32_t padded_digest_len; |
| |
| if (argc != 3) { |
| fprintf(stderr, "Usage: %s <alg_id> <digest_file>", argv[0]); |
| return -1; |
| } |
| algorithm = atoi(argv[1]); |
| if (algorithm < 0 || algorithm >= kNumAlgorithms) { |
| fprintf(stderr, "Invalid Algorithm!\n"); |
| return -1; |
| } |
| |
| digest = BufferFromFile(argv[2], &len); |
| if (!digest) { |
| fprintf(stderr, "Could not read file: %s\n", argv[2]); |
| return -1; |
| } |
| |
| padded_digest = PrependDigestInfo(algorithm, digest); |
| padded_digest_len = (hash_size_map[algorithm] + |
| digestinfo_size_map[algorithm]); |
| |
| if (!padded_digest) |
| error_code = -1; |
| if(padded_digest && |
| 1 != fwrite(padded_digest, padded_digest_len, 1, stdout)) |
| error_code = -1; |
| Free(padded_digest); |
| Free(digest); |
| return error_code; |
| } |