/* $OpenBSD: cipher.h,v 1.55 2020/01/23 10:24:29 dtucker Exp $ */ /* * Author: Tatu Ylonen <ylo@cs.hut.fi> * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland * All rights reserved * * As far as I am concerned, the code I have written for this software * can be used freely for any purpose. Any derived versions of this * software must be clearly marked as such, and if the derived work is * incompatible with the protocol description in the RFC file, it must be * called by a name other than "ssh" or "Secure Shell". * * Copyright (c) 2000 Markus Friedl. All rights reserved. * * 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 ``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 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 CIPHER_H #define CIPHER_H #include <sys/types.h> #ifdef WITH_OPENSSL #include <openssl/evp.h> #endif #include "cipher-chachapoly.h" #include "cipher-aesctr.h" #define CIPHER_ENCRYPT 1 #define CIPHER_DECRYPT 0 struct sshcipher; struct sshcipher_ctx; const struct sshcipher *cipher_by_name(const char *); const char *cipher_warning_message(const struct sshcipher_ctx *); int ciphers_valid(const char *); char *cipher_alg_list(char, int); const char *compression_alg_list(int); int cipher_init(struct sshcipher_ctx **, const struct sshcipher *, const u_char *, u_int, const u_char *, u_int, int); int cipher_crypt(struct sshcipher_ctx *, u_int, u_char *, const u_char *, u_int, u_int, u_int); int cipher_get_length(struct sshcipher_ctx *, u_int *, u_int, const u_char *, u_int); void cipher_free(struct sshcipher_ctx *); u_int cipher_blocksize(const struct sshcipher *); u_int cipher_keylen(const struct sshcipher *); u_int cipher_seclen(const struct sshcipher *); u_int cipher_authlen(const struct sshcipher *); u_int cipher_ivlen(const struct sshcipher *); u_int cipher_is_cbc(const struct sshcipher *); u_int cipher_ctx_is_plaintext(struct sshcipher_ctx *); int cipher_get_keyiv(struct sshcipher_ctx *, u_char *, size_t); int cipher_set_keyiv(struct sshcipher_ctx *, const u_char *, size_t); int cipher_get_keyiv_len(const struct sshcipher_ctx *); #endif /* CIPHER_H */