File: webcrypto_impl.h

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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 COMPONENTS_WEBCRYPTO_WEBCRYPTO_IMPL_H_
#define COMPONENTS_WEBCRYPTO_WEBCRYPTO_IMPL_H_

#include <vector>

#include "base/compiler_specific.h"
#include "base/task/single_thread_task_runner.h"
#include "third_party/blink/public/platform/web_crypto.h"
#include "third_party/blink/public/platform/web_crypto_algorithm.h"

namespace webcrypto {

// Wrapper around the Blink WebCrypto asynchronous interface, which forwards to
// the synchronous OpenSSL implementation.
//
// WebCryptoImpl is threadsafe.
//
// EnsureInit() must be called prior to using methods on WebCryptoImpl().
class WebCryptoImpl : public blink::WebCrypto {
 public:
  WebCryptoImpl();

  WebCryptoImpl(const WebCryptoImpl&) = delete;
  WebCryptoImpl& operator=(const WebCryptoImpl&) = delete;

  ~WebCryptoImpl() override;

  void Encrypt(
      const blink::WebCryptoAlgorithm& algorithm,
      const blink::WebCryptoKey& key,
      std::vector<unsigned char> data,
      blink::WebCryptoResult result,
      scoped_refptr<base::SingleThreadTaskRunner> task_runner) override;
  void Decrypt(
      const blink::WebCryptoAlgorithm& algorithm,
      const blink::WebCryptoKey& key,
      std::vector<unsigned char> data,
      blink::WebCryptoResult result,
      scoped_refptr<base::SingleThreadTaskRunner> task_runner) override;
  void Digest(const blink::WebCryptoAlgorithm& algorithm,
              std::vector<unsigned char> data,
              blink::WebCryptoResult result,
              scoped_refptr<base::SingleThreadTaskRunner> task_runner) override;
  void GenerateKey(
      const blink::WebCryptoAlgorithm& algorithm,
      bool extractable,
      blink::WebCryptoKeyUsageMask usages,
      blink::WebCryptoResult result,
      scoped_refptr<base::SingleThreadTaskRunner> task_runner) override;
  void ImportKey(
      blink::WebCryptoKeyFormat format,
      std::vector<unsigned char> key_data,
      const blink::WebCryptoAlgorithm& algorithm,
      bool extractable,
      blink::WebCryptoKeyUsageMask usages,
      blink::WebCryptoResult result,
      scoped_refptr<base::SingleThreadTaskRunner> task_runner) override;
  void ExportKey(
      blink::WebCryptoKeyFormat format,
      const blink::WebCryptoKey& key,
      blink::WebCryptoResult result,
      scoped_refptr<base::SingleThreadTaskRunner> task_runner) override;
  void Sign(const blink::WebCryptoAlgorithm& algorithm,
            const blink::WebCryptoKey& key,
            std::vector<unsigned char> data,
            blink::WebCryptoResult result,
            scoped_refptr<base::SingleThreadTaskRunner> task_runner) override;
  void VerifySignature(
      const blink::WebCryptoAlgorithm& algorithm,
      const blink::WebCryptoKey& key,
      std::vector<unsigned char> signature,
      std::vector<unsigned char> data,
      blink::WebCryptoResult result,
      scoped_refptr<base::SingleThreadTaskRunner> task_runner) override;
  void WrapKey(
      blink::WebCryptoKeyFormat format,
      const blink::WebCryptoKey& key,
      const blink::WebCryptoKey& wrapping_key,
      const blink::WebCryptoAlgorithm& wrap_algorithm,
      blink::WebCryptoResult result,
      scoped_refptr<base::SingleThreadTaskRunner> task_runner) override;
  void UnwrapKey(
      blink::WebCryptoKeyFormat format,
      std::vector<unsigned char> wrapped_key,
      const blink::WebCryptoKey& wrapping_key,
      const blink::WebCryptoAlgorithm& unwrap_algorithm,
      const blink::WebCryptoAlgorithm& unwrapped_key_algorithm,
      bool extractable,
      blink::WebCryptoKeyUsageMask usages,
      blink::WebCryptoResult result,
      scoped_refptr<base::SingleThreadTaskRunner> task_runner) override;

  void DeriveBits(
      const blink::WebCryptoAlgorithm& algorithm,
      const blink::WebCryptoKey& base_key,
      std::optional<unsigned int> length_bits,
      blink::WebCryptoResult result,
      scoped_refptr<base::SingleThreadTaskRunner> task_runner) override;

  void DeriveKey(
      const blink::WebCryptoAlgorithm& algorithm,
      const blink::WebCryptoKey& base_key,
      const blink::WebCryptoAlgorithm& import_algorithm,
      const blink::WebCryptoAlgorithm& key_length_algorithm,
      bool extractable,
      blink::WebCryptoKeyUsageMask usages,
      blink::WebCryptoResult result,
      scoped_refptr<base::SingleThreadTaskRunner> task_runner) override;

  bool DeserializeKeyForClone(const blink::WebCryptoKeyAlgorithm& algorithm,
                              blink::WebCryptoKeyType type,
                              bool extractable,
                              blink::WebCryptoKeyUsageMask usages,
                              base::span<const unsigned char> key_data,
                              blink::WebCryptoKey& key) override;

  bool SerializeKeyForClone(const blink::WebCryptoKey& key,
                            std::vector<unsigned char>& key_data) override;
};

}  // namespace webcrypto

#endif  // COMPONENTS_WEBCRYPTO_WEBCRYPTO_IMPL_H_