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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_ALGORITHMS_RSA_H_
#define COMPONENTS_WEBCRYPTO_ALGORITHMS_RSA_H_
#include <stdint.h>
#include "components/webcrypto/algorithm_implementation.h"
namespace webcrypto {
// Base class for an RSA algorithm whose keys additionaly have a hash parameter
// bound to them. Provides functionality for generating, importing, and
// exporting keys.
class RsaHashedAlgorithm : public AlgorithmImplementation {
public:
// |all_public_key_usages| and |all_private_key_usages| are the set of
// WebCrypto key usages that are valid for created keys (public and private
// respectively).
//
// For instance if public keys support encryption and wrapping, and private
// keys support decryption and unwrapping callers should set:
// all_public_key_usages = UsageEncrypt | UsageWrap
// all_private_key_usages = UsageDecrypt | UsageUnwrap
// This information is used when importing or generating keys, to enforce
// that valid key usages are allowed.
RsaHashedAlgorithm(blink::WebCryptoKeyUsageMask all_public_key_usages,
blink::WebCryptoKeyUsageMask all_private_key_usages)
: all_public_key_usages_(all_public_key_usages),
all_private_key_usages_(all_private_key_usages) {}
// For instance "RSA-OAEP-256".
virtual const char* GetJwkAlgorithm(
const blink::WebCryptoAlgorithmId hash) const = 0;
Status GenerateKey(const blink::WebCryptoAlgorithm& algorithm,
bool extractable,
blink::WebCryptoKeyUsageMask usages,
GenerateKeyResult* result) const override;
Status ImportKey(blink::WebCryptoKeyFormat format,
base::span<const uint8_t> key_data,
const blink::WebCryptoAlgorithm& algorithm,
bool extractable,
blink::WebCryptoKeyUsageMask usages,
blink::WebCryptoKey* key) const override;
Status ExportKey(blink::WebCryptoKeyFormat format,
const blink::WebCryptoKey& key,
std::vector<uint8_t>* buffer) const override;
Status DeserializeKeyForClone(const blink::WebCryptoKeyAlgorithm& algorithm,
blink::WebCryptoKeyType type,
bool extractable,
blink::WebCryptoKeyUsageMask usages,
base::span<const uint8_t> key_data,
blink::WebCryptoKey* key) const override;
private:
Status ImportKeyPkcs8(base::span<const uint8_t> key_data,
const blink::WebCryptoAlgorithm& algorithm,
bool extractable,
blink::WebCryptoKeyUsageMask usages,
blink::WebCryptoKey* key) const;
Status ImportKeySpki(base::span<const uint8_t> key_data,
const blink::WebCryptoAlgorithm& algorithm,
bool extractable,
blink::WebCryptoKeyUsageMask usages,
blink::WebCryptoKey* key) const;
Status ImportKeyJwk(base::span<const uint8_t> key_data,
const blink::WebCryptoAlgorithm& algorithm,
bool extractable,
blink::WebCryptoKeyUsageMask usages,
blink::WebCryptoKey* key) const;
Status ExportKeyPkcs8(const blink::WebCryptoKey& key,
std::vector<uint8_t>* buffer) const;
Status ExportKeySpki(const blink::WebCryptoKey& key,
std::vector<uint8_t>* buffer) const;
Status ExportKeyJwk(const blink::WebCryptoKey& key,
std::vector<uint8_t>* buffer) const;
const blink::WebCryptoKeyUsageMask all_public_key_usages_;
const blink::WebCryptoKeyUsageMask all_private_key_usages_;
};
} // namespace webcrypto
#endif // COMPONENTS_WEBCRYPTO_ALGORITHMS_RSA_H_
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