diff options
| -rw-r--r-- | utility/pad_digest_utility.c | 14 |
1 files changed, 10 insertions, 4 deletions
diff --git a/utility/pad_digest_utility.c b/utility/pad_digest_utility.c index 7e833fe5..86d6694b 100644 --- a/utility/pad_digest_utility.c +++ b/utility/pad_digest_utility.c @@ -1,14 +1,12 @@ /* 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 <string.h> #include "2sysincludes.h" @@ -19,6 +17,14 @@ #include "padding.h" #include "signature_digest.h" +static void usage(char* argv[]) { + fprintf(stderr, + "Usage: %s <alg_id> <digest_file>\n" + "\n" + "Generate a padded hash suitable for generating PKCS#1.5 " + "signatures.\n", + basename(argv[0])); +} int main(int argc, char* argv[]) { int algorithm = -1; @@ -29,7 +35,7 @@ int main(int argc, char* argv[]) { uint32_t padded_digest_len; if (argc != 3) { - fprintf(stderr, "Usage: %s <alg_id> <digest_file>", argv[0]); + usage(argv); return -1; } algorithm = atoi(argv[1]); |