| // Copyright 2012 The Chromium Authors |
| // 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_ |