Current File : //usr/local/include/proftpd/mod_sftp/cipher.h
/*
* ProFTPD - mod_sftp cipher mgmt
* Copyright (c) 2008-2022 TJ Saunders
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA.
*
* As a special exemption, TJ Saunders and other respective copyright holders
* give permission to link this program with OpenSSL, and distribute the
* resulting executable, without including the source code for OpenSSL in the
* source distribution.
*/
#ifndef MOD_SFTP_CIPHER_H
#define MOD_SFTP_CIPHER_H
#include "mod_sftp.h"
int sftp_cipher_init(void);
int sftp_cipher_free(void);
/* Returns the cipher block size, or 8, whichever is larger. This value is
* used when reading in the first bytes of a packet in order to determine
* the packet length. See RFC4253, Section 6, "Binary Packet Protocol".
*/
size_t sftp_cipher_get_read_block_size(void);
size_t sftp_cipher_get_write_block_size(void);
void sftp_cipher_set_read_block_size(size_t);
void sftp_cipher_set_write_block_size(size_t);
/* Returns the cipher authenticated data size, or zero. */
size_t sftp_cipher_get_read_auth_size(void);
size_t sftp_cipher_get_read_auth_size2(void);
size_t sftp_cipher_get_write_auth_size(void);
size_t sftp_cipher_get_write_auth_size2(void);
const char *sftp_cipher_get_read_algo(void);
int sftp_cipher_set_read_algo(const char *algo);
int sftp_cipher_set_read_key(pool *p, const EVP_MD *md, const unsigned char *k,
uint32_t klen, const char *h, uint32_t hlen, int role);
int sftp_cipher_read_data(struct ssh2_packet *pkt, unsigned char *data,
uint32_t data_len, unsigned char **buf, uint32_t *buflen);
const char *sftp_cipher_get_write_algo(void);
int sftp_cipher_set_write_algo(const char *algo);
int sftp_cipher_set_write_key(pool *p, const EVP_MD *md, const unsigned char *k,
uint32_t klen, const char *h, uint32_t hlen, int role);
int sftp_cipher_write_data(struct ssh2_packet *pkt, unsigned char *buf,
size_t *buflen);
#endif /* MOD_SFTP_CIPHER_H */
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