Fix RSA verification test.

src/platform/vboot_reference/utils/signature_digest_utility.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 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;
+  uint32_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;
+}