/* *  Copyright (C) 2006 Takeharu KATO * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright *    notice, this list of conditions and the following disclaimer. * 2. 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. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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. */#if !defined(G2IPMSG_SYMCRYPT_H)#define G2IPMSG_SYMCRYPT_H#ifdef HAVE_CONFIG_H#  include <config.h>#endif#if defined(USE_OPENSSL)#include <openssl/evp.h>#define SYMCRYPT_MAX_KEY_TYPE 5#define RC2_CAPS            (IPMSG_RC2_40|IPMSG_RC2_128|IPMSG_RC2_256)#define BLOWFISH_CAPS       (IPMSG_BLOWFISH_128|IPMSG_BLOWFISH_256)#define SYM_CAPS            (RC2_CAPS|BLOWFISH_CAPS)int ipmsg_get_skey_length(unsigned long type,size_t *ret_len);int blowfish_cbc_encrypt_setup(const char *key,size_t key_len_byte,const char *iv,EVP_CIPHER_CTX **ret);int blowfish_cbc_decrypt_setup(const char *key,size_t key_len_byte,const char *iv,EVP_CIPHER_CTX **ret);int rc2_cbc_encrypt_setup(const char *key,size_t key_len_byte,const char *iv,EVP_CIPHER_CTX **ret);int rc2_cbc_decrypt_setup(const char *key,size_t key_len_byte,const char *iv,EVP_CIPHER_CTX **ret);int common_cbc_encrypt(EVP_CIPHER_CTX *ctx, const char *data, int inl, int *rb,char **ret_buff);int common_cbc_decrypt(EVP_CIPHER_CTX *ctx, const char *ct, int inl,char **ret_buff,size_t *outl);int common_cbc_finalize(EVP_CIPHER_CTX **ctx_p);int symcrypt_encrypt_message(unsigned long type,const unsigned char *plain,			 char **key_p, size_t *key_len_p,char **enc_p,			     size_t *enc_len_p);int symcrypt_decrypt_message(unsigned long type,const unsigned char *encoded,			     size_t enc_len, const char *key,char **dec_p,size_t *dec_len_p);int select_symmetric_key(unsigned long peer_cap,unsigned long *selected_key,int speed);#else#define SYM_CAPS            (0)#endif  /*  USE_OPENSSL  */#endif  /*  G2IPMSG_SYMCRYPT_H  */