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      1 // Copyright (c) 2006-2008 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 #include "base/base64.h"
      6 
      7 #include "third_party/modp_b64/modp_b64.h"
      8 
      9 namespace base {
     10 
     11 bool Base64Encode(const std::string& input, std::string* output) {
     12   std::string temp;
     13   temp.resize(modp_b64_encode_len(input.size()));  // makes room for null byte
     14 
     15   // null terminates result since result is base64 text!
     16   int input_size = static_cast<int>(input.size());
     17   int output_size= modp_b64_encode(&(temp[0]), input.data(), input_size);
     18   if (output_size < 0)
     19     return false;
     20 
     21   temp.resize(output_size);  // strips off null byte
     22   output->swap(temp);
     23   return true;
     24 }
     25 
     26 bool Base64Decode(const std::string& input, std::string* output) {
     27   std::string temp;
     28   temp.resize(modp_b64_decode_len(input.size()));
     29 
     30   // does not null terminate result since result is binary data!
     31   int input_size = static_cast<int>(input.size());
     32   int output_size = modp_b64_decode(&(temp[0]), input.data(), input_size);
     33   if (output_size < 0)
     34     return false;
     35 
     36   temp.resize(output_size);
     37   output->swap(temp);
     38   return true;
     39 }
     40 
     41 }  // namespace base
     42