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/*
* Utils for calling OpenSSL
* (C) 2015 Jack Lloyd
*
* Botan is released under the Simplified BSD License (see license.txt)
*/

#ifndef BOTAN_OPENSSL_H__
#define BOTAN_OPENSSL_H__

#include <botan/pk_ops.h>
#include <botan/secmem.h>
#include <botan/exceptn.h>
#include <memory>
#include <string>

#include <openssl/err.h>

namespace Botan {

class OpenSSL_Error : public Exception
   {
   public:
      OpenSSL_Error(const std::string& what) :
         Exception(what + " failed: " + ERR_error_string(ERR_get_error(), nullptr)) {}
   };

#define BOTAN_OPENSSL_BLOCK_PRIO 150
#define BOTAN_OPENSSL_HASH_PRIO  150
#define BOTAN_OPENSSL_RC4_PRIO   150

/* RSA */

#if defined(BOTAN_HAS_RSA)

class RSA_PublicKey;
class RSA_PrivateKey;

std::unique_ptr<PK_Ops::Encryption>
make_openssl_rsa_enc_op(const RSA_PublicKey& key, const std::string& params);
std::unique_ptr<PK_Ops::Decryption>
make_openssl_rsa_dec_op(const RSA_PrivateKey& key, const std::string& params);

std::unique_ptr<PK_Ops::Verification>
make_openssl_rsa_ver_op(const RSA_PublicKey& key, const std::string& params);
std::unique_ptr<PK_Ops::Signature>
make_openssl_rsa_sig_op(const RSA_PrivateKey& key, const std::string& params);

#endif

/* ECDSA */

#if defined(BOTAN_HAS_ECDSA)

class ECDSA_PublicKey;
class ECDSA_PrivateKey;

std::unique_ptr<PK_Ops::Verification>
make_openssl_ecdsa_ver_op(const ECDSA_PublicKey& key, const std::string& params);
std::unique_ptr<PK_Ops::Signature>
make_openssl_ecdsa_sig_op(const ECDSA_PrivateKey& key, const std::string& params);

#endif

/* ECDH */

#if defined(BOTAN_HAS_ECDH)

class ECDH_PrivateKey;

std::unique_ptr<PK_Ops::Key_Agreement>
make_openssl_ecdh_ka_op(const ECDH_PrivateKey& key, const std::string& params);

#endif


}

#endif