Add base::SHA1HashBytes

base/sha1.h

 // Copyright (c) 2009 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef BASE_SHA1_H_
 #define BASE_SHA1_H_
 #pragma once
 
 #include <string>
 
 namespace base {
 
 // This function performs SHA-1 operations.
 
 enum {
   SHA1_LENGTH = 20  // Length in bytes of a SHA-1 hash.
 };
 
 // Computes the SHA-1 hash of the input string |str| and returns the full
 // hash.
 std::string SHA1HashString(const std::string& str);
 
+// Computes the SHA-1 hash of the |len| bytes in |data| and puts the hash
+// in |hash_array|.
+void SHA1HashBytes(const unsigned char* data, size_t len,
+                   unsigned char* hash_array);

[wtc, 2011/03/11 18:46:15]

Nit: |hash_array| can be shortened to |hash|.

Please document that |hash_array| must be SHA1_LENGTH bytes
long.

Alternatively, force the caller to specify the length of
|hash_array|:

void SHA1HashBytes(const unsigned char* data, size_t data_len,
                   unsigned char* hash, size_t hash_len);

[hans, 2011/03/13 19:48:16]

done
done

+
 }  // namespace base
 
 #endif  // BASE_SHA1_H_