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// Copyright 2014 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef THIRD_PARTY_BLINK_RENDERER_PLATFORM_CRYPTO_H_
#define THIRD_PARTY_BLINK_RENDERER_PLATFORM_CRYPTO_H_
#include "base/containers/span.h"
#include "third_party/blink/renderer/platform/platform_export.h"
#include "third_party/blink/renderer/platform/wtf/allocator/allocator.h"
#include "third_party/blink/renderer/platform/wtf/forward.h"
#include "third_party/blink/renderer/platform/wtf/text/wtf_string.h"
#include "third_party/blink/renderer/platform/wtf/vector.h"
#include "third_party/boringssl/src/include/openssl/digest.h"
namespace blink {
static const size_t kMaxDigestSize = 64;
typedef Vector<uint8_t, kMaxDigestSize> DigestValue;
enum HashAlgorithm {
kHashAlgorithmSha1,
kHashAlgorithmSha256,
kHashAlgorithmSha384,
kHashAlgorithmSha512
};
PLATFORM_EXPORT bool ComputeDigest(HashAlgorithm,
base::span<const uint8_t> digestable,
DigestValue& digest_result);
PLATFORM_EXPORT bool ComputeDigest(HashAlgorithm,
const SegmentedBuffer* buffer,
DigestValue& digest_result);
class PLATFORM_EXPORT Digestor {
public:
explicit Digestor(HashAlgorithm);
~Digestor();
Digestor(Digestor&& other) = default;
Digestor& operator=(Digestor&& other) = default;
bool has_failed() const { return has_failed_; }
// Return false on failure. These do nothing once the |has_failed_| flag is
// set. This object cannot be reused; do not update it after Finish.
bool Update(base::span<const uint8_t>);
bool UpdateUtf8(const String&,
WTF::Utf8ConversionMode = WTF::Utf8ConversionMode::kLenient);
bool Finish(DigestValue&);
private:
bssl::ScopedEVP_MD_CTX digest_context_;
bool has_failed_ = false;
};
} // namespace blink
#endif // THIRD_PARTY_BLINK_RENDERER_PLATFORM_CRYPTO_H_
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