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// Copyright (c) 2009 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 BASE_CRYPTO_RSA_PRIVATE_KEY_H_
#define BASE_CRYPTO_RSA_PRIVATE_KEY_H_
#include "build/build_config.h"
#if defined(USE_NSS)
#include <cryptoht.h>
#include <keythi.h>
#elif defined(OS_MACOSX)
#include <Security/cssm.h>
#elif defined(OS_WIN)
#include <windows.h>
#include <wincrypt.h>
#endif
#include <vector>
#include "base/basictypes.h"
namespace base {
// Encapsulates an RSA private key. Can be used to generate new keys, export
// keys to other formats, or to extract a public key.
class RSAPrivateKey {
public:
// Create a new random instance. Can return NULL if initialization fails.
static RSAPrivateKey* Create(uint16 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 RSAPrivateKey* CreateFromPrivateKeyInfo(
const std::vector<uint8>& input);
~RSAPrivateKey();
#if defined(USE_NSS)
SECKEYPrivateKey* key() { return key_; }
#elif defined(OS_WIN)
HCRYPTPROV provider() { return provider_; }
HCRYPTKEY key() { return key_; }
#elif defined(OS_MACOSX)
CSSM_CSP_HANDLE csp_handle() { return csp_handle_; }
CSSM_KEY_PTR key() { return &key_; }
#endif
// Exports the private key to a PKCS #1 PrivateKey block.
bool ExportPrivateKey(std::vector<uint8>* output);
// Exports the public key to an X509 SubjectPublicKeyInfo block.
bool ExportPublicKey(std::vector<uint8>* output);
private:
// Constructor is private. Use Create() or CreateFromPrivateKeyInfo()
// instead.
RSAPrivateKey();
#if defined(USE_NSS)
SECKEYPrivateKey* key_;
SECKEYPublicKey* public_key_;
#elif defined(OS_WIN)
bool InitProvider();
HCRYPTPROV provider_;
HCRYPTKEY key_;
#elif defined(OS_MACOSX)
CSSM_KEY key_;
CSSM_CSP_HANDLE csp_handle_;
#endif
DISALLOW_COPY_AND_ASSIGN(RSAPrivateKey);
};
} // namespace base
#endif // BASE_CRYPTO_RSA_PRIVATE_KEY_H_
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