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      1 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 #ifndef BASE_SHA1_H_
      6 #define BASE_SHA1_H_
      7 
      8 #include <stddef.h>
      9 
     10 #include <string>
     11 
     12 #include "base/base_export.h"
     13 
     14 namespace base {
     15 
     16 // These functions perform SHA-1 operations.
     17 
     18 static const size_t kSHA1Length = 20;  // Length in bytes of a SHA-1 hash.
     19 
     20 // Computes the SHA-1 hash of the input string |str| and returns the full
     21 // hash.
     22 BASE_EXPORT std::string SHA1HashString(const std::string& str);
     23 
     24 // Computes the SHA-1 hash of the |len| bytes in |data| and puts the hash
     25 // in |hash|. |hash| must be kSHA1Length bytes long.
     26 BASE_EXPORT void SHA1HashBytes(const unsigned char* data, size_t len,
     27                                unsigned char* hash);
     28 
     29 }  // namespace base
     30 
     31 #endif  // BASE_SHA1_H_
     32