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// 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 "crypto/secure_hash.h"
#include <stddef.h>
#include "base/logging.h"
#include "base/pickle.h"
#include "crypto/third_party/nss/chromium-blapi.h"
#include "crypto/third_party/nss/chromium-sha256.h"
namespace crypto {
namespace {
class SecureHashSHA256NSS : public SecureHash {
public:
SecureHashSHA256NSS() {
SHA256_Begin(&ctx_);
}
SecureHashSHA256NSS(const SecureHashSHA256NSS& other) {
SHA256_Clone(&ctx_, const_cast<SHA256Context*>(&other.ctx_));
}
~SecureHashSHA256NSS() override { memset(&ctx_, 0, sizeof(ctx_)); }
// SecureHash implementation:
void Update(const void* input, size_t len) override {
SHA256_Update(&ctx_, static_cast<const unsigned char*>(input), len);
}
void Finish(void* output, size_t len) override {
SHA256_End(&ctx_, static_cast<unsigned char*>(output), NULL,
static_cast<unsigned int>(len));
}
SecureHash* Clone() const override { return new SecureHashSHA256NSS(*this); }
size_t GetHashLength() const override { return SHA256_LENGTH; }
private:
SHA256Context ctx_;
};
} // namespace
SecureHash* SecureHash::Create(Algorithm algorithm) {
switch (algorithm) {
case SHA256:
return new SecureHashSHA256NSS();
default:
NOTIMPLEMENTED();
return NULL;
}
}
} // namespace crypto
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