// Copyright (c) 2011 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 ANGLEBASE_SHA1_H_ #define ANGLEBASE_SHA1_H_ #include <stddef.h> #include <stdint.h> #include <array> #include <string> #include "anglebase/base_export.h" namespace angle { namespace base { // These functions perform SHA-1 operations. static const size_t kSHA1Length = …; // Length in bytes of a SHA-1 hash. // Computes the SHA-1 hash of the input string |str| and returns the full // hash. ANGLEBASE_EXPORT std::string SHA1HashString(const std::string &str); // Computes the SHA-1 hash of the |len| bytes in |data| and puts the hash // in |hash|. |hash| must be kSHA1Length bytes long. ANGLEBASE_EXPORT void SHA1HashBytes(const unsigned char *data, size_t len, unsigned char *hash); // Implementation of SHA-1. Only handles data in byte-sized blocks, // which simplifies the code a fair bit. // Identifier names follow notation in FIPS PUB 180-3, where you'll // also find a description of the algorithm: // http://csrc.nist.gov/publications/fips/fips180-3/fips180-3_final.pdf // Usage example: // // SecureHashAlgorithm sha; // while(there is data to hash) // sha.Update(moredata, size of data); // sha.Final(); // memcpy(somewhere, sha.Digest(), 20); // // to reuse the instance of sha, call sha.Init(); // TODO(jhawkins): Replace this implementation with a per-platform // implementation using each platform's crypto library. See // http://crbug.com/47218 class SecureHashAlgorithm { … }; } // namespace base } // namespace angle #endif // ANGLEBASE_SHA1_H_