blob: 3383201f83cfc37dd5b64082337a122f5b4ce9cf [file] [log] [blame]
// 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 <string.h>
#include "base/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<const unsigned char*>(,
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