diff options
Diffstat (limited to 'utility/signature_digest_utility.c')
-rw-r--r-- | utility/signature_digest_utility.c | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/utility/signature_digest_utility.c b/utility/signature_digest_utility.c new file mode 100644 index 00000000..6c8891b9 --- /dev/null +++ b/utility/signature_digest_utility.c @@ -0,0 +1,54 @@ +/* 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 cryptographic digest of a contents of a + * file in a format that can be directly used to generate PKCS#1 v1.5 + * signatures via the "openssl" command line utility. + */ + + +#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* buf = NULL; + uint8_t* signature_digest = NULL; + uint64_t len; + uint32_t signature_digest_len; + + if (argc != 3) { + fprintf(stderr, "Usage: %s <algoid> <file>", argv[0]); + return -1; + } + algorithm = atoi(argv[1]); + if (algorithm < 0 || algorithm >= kNumAlgorithms) { + fprintf(stderr, "Invalid Algorithm!\n"); + return -1; + } + + buf = BufferFromFile(argv[2], &len); + if (!buf) { + fprintf(stderr, "Could read file: %s\n", argv[2]); + return -1; + } + + signature_digest = SignatureDigest(buf, len, algorithm); + signature_digest_len = (hash_size_map[algorithm] + + digestinfo_size_map[algorithm]); + if (!signature_digest) + error_code = -1; + if(signature_digest && + 1 != fwrite(signature_digest, signature_digest_len, 1, stdout)) + error_code = -1; + Free(signature_digest); + Free(buf); + return error_code; +} |