1 // Copyright (c) 2012 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 <stddef.h> 8 9 #include "third_party/modp_b64/modp_b64.h" 10 11 namespace base { 12 Base64Encode(const StringPiece & input,std::string * output)13 void Base64Encode(const StringPiece& input, std::string* output) { 14 std::string temp; 15 temp.resize(modp_b64_encode_len(input.size())); // makes room for null byte 16 17 // modp_b64_encode_len() returns at least 1, so temp[0] is safe to use. 18 size_t output_size = modp_b64_encode(&(temp[0]), input.data(), input.size()); 19 20 temp.resize(output_size); // strips off null byte 21 output->swap(temp); 22 } 23 Base64Decode(const StringPiece & input,std::string * output)24 bool Base64Decode(const StringPiece& input, std::string* output) { 25 std::string temp; 26 temp.resize(modp_b64_decode_len(input.size())); 27 28 // does not null terminate result since result is binary data! 29 size_t input_size = input.size(); 30 size_t output_size = modp_b64_decode(&(temp[0]), input.data(), input_size); 31 if (output_size == MODP_B64_ERROR) 32 return false; 33 34 temp.resize(output_size); 35 output->swap(temp); 36 return true; 37 } 38 39 } // namespace base 40