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66 lines
2.1 KiB
C++
66 lines
2.1 KiB
C++
// Copyright (c) 2012 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#ifndef CRYPTO_RSA_PRIVATE_KEY_H_
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#define CRYPTO_RSA_PRIVATE_KEY_H_
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#include <stddef.h>
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#include <stdint.h>
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#include <memory>
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#include <vector>
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#include "base/containers/span.h"
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#include "build/build_config.h"
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#include "crypto/crypto_export.h"
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#include "third_party/boringssl/src/include/openssl/base.h"
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namespace crypto {
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// Encapsulates an RSA private key. Can be used to generate new keys, export
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// keys to other formats, or to extract a public key.
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// TODO(hclam): This class should be ref-counted so it can be reused easily.
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class CRYPTO_EXPORT RSAPrivateKey {
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public:
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RSAPrivateKey(const RSAPrivateKey&) = delete;
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RSAPrivateKey& operator=(const RSAPrivateKey&) = delete;
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~RSAPrivateKey();
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// Create a new random instance. Can return NULL if initialization fails.
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static std::unique_ptr<RSAPrivateKey> Create(uint16_t num_bits);
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// Create a new instance by importing an existing private key. The format is
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// an ASN.1-encoded PrivateKeyInfo block from PKCS #8. This can return NULL if
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// initialization fails.
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static std::unique_ptr<RSAPrivateKey> CreateFromPrivateKeyInfo(
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base::span<const uint8_t> input);
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// Create a new instance from an existing EVP_PKEY, taking a
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// reference to it. |key| must be an RSA key. Returns NULL on
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// failure.
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static std::unique_ptr<RSAPrivateKey> CreateFromKey(EVP_PKEY* key);
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EVP_PKEY* key() const { return key_.get(); }
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// Creates a copy of the object.
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std::unique_ptr<RSAPrivateKey> Copy() const;
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// Exports the private key to a PKCS #8 PrivateKeyInfo block.
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bool ExportPrivateKey(std::vector<uint8_t>* output) const;
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// Exports the public key to an X509 SubjectPublicKeyInfo block.
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bool ExportPublicKey(std::vector<uint8_t>* output) const;
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private:
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// Constructor is private. Use one of the Create*() methods above instead.
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RSAPrivateKey();
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bssl::UniquePtr<EVP_PKEY> key_;
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};
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} // namespace crypto
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#endif // CRYPTO_RSA_PRIVATE_KEY_H_
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