Add generic wrappers for performing message digest operations.

src/platform/vboot_reference/tests/verify_data.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.
  */
 
 /* Routines for verifying a file's signature. Useful in testing the core
  * RSA verification implementation.
  */
 
 #include <fcntl.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 #include <sys/stat.h>
 #include <sys/types.h>
 #include <unistd.h>
 
-#include "digest_utility.h"
+#include "sha_utility.h"
 #include "padding.h"
 #include "rsa.h"
 #include "rsa_utility.h"
 #include "verify_data.h"
 
 RSAPublicKey* read_RSAkey(char* input_file, int len) {
   int key_fd;
   int buf_len;
   struct stat stat_fd;
   uint8_t* buf = NULL;
@@ skipping 69 matching lines @@
     fprintf(stderr, "Invalid Algorithm!\n");
     return 0;
   }
   /* Length of the RSA Signature/RSA Key */
   sig_len = siglen_map[algorithm] * sizeof(uint32_t);
 
   if (!(key = read_RSAkey(argv[2], sig_len)))
     goto failure;
   if (!(signature = read_signature(argv[3], sig_len)))
     goto failure;
-  if (!(digest = calculate_digest(argv[4], algorithm)))
+  if (!(digest = DigestFile(argv[4], algorithm)))
     goto failure;
   if(RSA_verify(key, signature, sig_len, algorithm, digest))
     fprintf(stderr, "Signature Verification SUCCEEDED.\n");
   else
     fprintf(stderr, "Signature Verification FAILED!\n");
 
 failure:
   free(key);
   free(signature);
   free(digest);
 
   return 0;
 }