15821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Copyright (c) 2012 The Chromium Authors. All rights reserved. 25821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Use of this source code is governed by a BSD-style license that can be 35821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// found in the LICENSE file. 45821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 55821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifndef CRYPTO_SHA2_H_ 65821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define CRYPTO_SHA2_H_ 75821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 85821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include <string> 95821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 10c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)#include "base/strings/string_piece.h" 115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "crypto/crypto_export.h" 125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)namespace crypto { 145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// These functions perform SHA-256 operations. 165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// 175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Functions for SHA-384 and SHA-512 can be added when the need arises. 185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)static const size_t kSHA256Length = 32; // Length in bytes of a SHA-256 hash. 205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Computes the SHA-256 hash of the input string 'str' and stores the first 225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// 'len' bytes of the hash in the output buffer 'output'. If 'len' > 32, 235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// only 32 bytes (the full hash) are stored in the 'output' buffer. 245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)CRYPTO_EXPORT void SHA256HashString(const base::StringPiece& str, 255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) void* output, size_t len); 265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Convenience version of the above that returns the result in a 32-byte 285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// string. 295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)CRYPTO_EXPORT std::string SHA256HashString(const base::StringPiece& str); 305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} // namespace crypto 325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif // CRYPTO_SHA2_H_ 34