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