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// Copyright (c) 2010 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 "chrome/browser/sync/util/crypto_helpers.h"
#include <string>
#include <vector>
#include "base/basictypes.h"
#include "base/format_macros.h"
#include "base/logging.h"
#include "base/rand_util.h"
#include "base/string_number_conversions.h"
#include "base/string_util.h"
using std::string;
using std::vector;
MD5Calculator::MD5Calculator() {
MD5Init(&context_);
}
void MD5Calculator::AddData(const unsigned char* data, int length) {
CHECK(bin_digest_.empty());
MD5Update(&context_, data, length);
}
void MD5Calculator::CalcDigest() {
if (bin_digest_.empty()) {
MD5Digest digest;
MD5Final(&digest, &context_);
bin_digest_.assign(digest.a, digest.a + arraysize(digest.a));
}
}
vector<uint8> MD5Calculator::GetDigest() {
CalcDigest();
return bin_digest_;
}
std::string MD5Calculator::GetHexDigest() {
CalcDigest();
string hex = base::HexEncode(reinterpret_cast<char*>(&bin_digest_.front()),
bin_digest_.size());
StringToLowerASCII(&hex);
return hex;
}
void GetRandomBytes(char* output, int output_length) {
for (int i = 0; i < output_length; i++) {
// TODO(chron): replace this with something less stupid.
output[i] = static_cast<char>(base::RandUint64());
}
}
string Generate128BitRandomHexString() {
int64 chunk1 = static_cast<int64>(base::RandUint64());
int64 chunk2 = static_cast<int64>(base::RandUint64());
return StringPrintf("%016" PRId64 "x%016" PRId64 "x", chunk1, chunk2);
}
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