// Copyright (c) 2012 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. #include "components/variations/hashing.h" #include #include "base/hash/sha1.h" #include "base/sys_byteorder.h" namespace variations { uint32_t HashName(base::StringPiece name) { // SHA-1 is designed to produce a uniformly random spread in its output space, // even for nearly-identical inputs. unsigned char sha1_hash[base::kSHA1Length]; base::SHA1HashBytes(reinterpret_cast(name.data()), name.size(), sha1_hash); uint32_t bits; static_assert(sizeof(bits) < sizeof(sha1_hash), "more data required"); memcpy(&bits, sha1_hash, sizeof(bits)); return base::ByteSwapToLE32(bits); } } // namespace variations