/* Copyright (C) 2009, 2010 Simon Josefsson
 * Copyright (C) 2006, 2007 The Written Word, Inc.  All rights reserved.
 * Copyright (C) 2010 Daniel Stenberg
 *
 * Redistribution and use in source and binary forms,
 * with or without modification, are permitted provided
 * that the following conditions are met:
 *
 *   Redistributions of source code must retain the above
 *   copyright notice, this list of conditions and the
 *   following disclaimer.
 *
 *   Redistributions in binary form must reproduce the above
 *   copyright notice, this list of conditions and the following
 *   disclaimer in the documentation and/or other materials
 *   provided with the distribution.
 *
 *   Neither the name of the copyright holder nor the names
 *   of any other contributors may be used to endorse or
 *   promote products derived from this software without
 *   specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
 * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
 * USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
 * OF SUCH DAMAGE.
 */
#ifndef LIBSSH2_CRYPTO_H
#define LIBSSH2_CRYPTO_H

#ifdef LIBSSH2_LIBGCRYPT
#include "libgcrypt.h"
#else
#include "openssl.h"
#endif

int _libssh2_rsa_new(libssh2_rsa_ctx ** rsa,
                     const unsigned char *edata,
                     unsigned long elen,
                     const unsigned char *ndata,
                     unsigned long nlen,
                     const unsigned char *ddata,
                     unsigned long dlen,
                     const unsigned char *pdata,
                     unsigned long plen,
                     const unsigned char *qdata,
                     unsigned long qlen,
                     const unsigned char *e1data,
                     unsigned long e1len,
                     const unsigned char *e2data,
                     unsigned long e2len,
                     const unsigned char *coeffdata, unsigned long coefflen);
int _libssh2_rsa_new_private(libssh2_rsa_ctx ** rsa,
                             LIBSSH2_SESSION * session,
                             const char *filename,
                             unsigned const char *passphrase);
int _libssh2_rsa_sha1_verify(libssh2_rsa_ctx * rsa,
                             const unsigned char *sig,
                             unsigned long sig_len,
                             const unsigned char *m, unsigned long m_len);
int _libssh2_rsa_sha1_sign(LIBSSH2_SESSION * session,
                           libssh2_rsa_ctx * rsactx,
                           const unsigned char *hash,
                           size_t hash_len,
                           unsigned char **signature,
                           size_t *signature_len);

#if LIBSSH2_DSA
int _libssh2_dsa_new(libssh2_dsa_ctx ** dsa,
                     const unsigned char *pdata,
                     unsigned long plen,
                     const unsigned char *qdata,
                     unsigned long qlen,
                     const unsigned char *gdata,
                     unsigned long glen,
                     const unsigned char *ydata,
                     unsigned long ylen,
                     const unsigned char *x, unsigned long x_len);
int _libssh2_dsa_new_private(libssh2_dsa_ctx ** dsa,
                             LIBSSH2_SESSION * session,
                             const char *filename,
                             unsigned const char *passphrase);
int _libssh2_dsa_sha1_verify(libssh2_dsa_ctx * dsactx,
                             const unsigned char *sig,
                             const unsigned char *m, unsigned long m_len);
int _libssh2_dsa_sha1_sign(libssh2_dsa_ctx * dsactx,
                           const unsigned char *hash,
                           unsigned long hash_len, unsigned char *sig);
#endif

int _libssh2_cipher_init(_libssh2_cipher_ctx * h,
                         _libssh2_cipher_type(algo),
                         unsigned char *iv,
                         unsigned char *secret, int encrypt);

int _libssh2_cipher_crypt(_libssh2_cipher_ctx * ctx,
                          _libssh2_cipher_type(algo),
                          int encrypt, unsigned char *block, size_t blocksize);

int _libssh2_pub_priv_keyfile(LIBSSH2_SESSION *session,
                              unsigned char **method,
                              size_t *method_len,
                              unsigned char **pubkeydata,
                              size_t *pubkeydata_len,
                              const char *privatekey,
                              const char *passphrase);

void _libssh2_init_aes_ctr(void);

#endif
