| /* $OpenBSD: cipher.h,v 1.48 2015/07/08 19:09:25 markus 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> |
| #include <openssl/evp.h> |
| #include "cipher-chachapoly.h" |
| #include "cipher-aesctr.h" |
| |
| /* |
| * Cipher types for SSH-1. New types can be added, but old types should not |
| * be removed for compatibility. The maximum allowed value is 31. |
| */ |
| #define SSH_CIPHER_SSH2 -3 |
| #define SSH_CIPHER_INVALID -2 /* No valid cipher selected. */ |
| #define SSH_CIPHER_NOT_SET -1 /* None selected (invalid number). */ |
| #define SSH_CIPHER_NONE 0 /* no encryption */ |
| #define SSH_CIPHER_IDEA 1 /* IDEA CFB */ |
| #define SSH_CIPHER_DES 2 /* DES CBC */ |
| #define SSH_CIPHER_3DES 3 /* 3DES CBC */ |
| #define SSH_CIPHER_BROKEN_TSS 4 /* TRI's Simple Stream encryption CBC */ |
| #define SSH_CIPHER_BROKEN_RC4 5 /* Alleged RC4 */ |
| #define SSH_CIPHER_BLOWFISH 6 |
| #define SSH_CIPHER_RESERVED 7 |
| #define SSH_CIPHER_MAX 31 |
| |
| #define CIPHER_ENCRYPT 1 |
| #define CIPHER_DECRYPT 0 |
| |
| struct sshcipher; |
| struct sshcipher_ctx { |
| int plaintext; |
| int encrypt; |
| EVP_CIPHER_CTX evp; |
| struct chachapoly_ctx cp_ctx; /* XXX union with evp? */ |
| struct aesctr_ctx ac_ctx; /* XXX union with evp? */ |
| const struct sshcipher *cipher; |
| }; |
| |
| u_int cipher_mask_ssh1(int); |
| const struct sshcipher *cipher_by_name(const char *); |
| const struct sshcipher *cipher_by_number(int); |
| int cipher_number(const char *); |
| char *cipher_name(int); |
| const char *cipher_warning_message(const struct sshcipher_ctx *); |
| int ciphers_valid(const char *); |
| char *cipher_alg_list(char, 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); |
| int cipher_cleanup(struct sshcipher_ctx *); |
| int cipher_set_key_string(struct sshcipher_ctx *, const struct sshcipher *, |
| const char *, int); |
| 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_get_number(const struct sshcipher *); |
| int cipher_get_keyiv(struct sshcipher_ctx *, u_char *, u_int); |
| int cipher_set_keyiv(struct sshcipher_ctx *, const u_char *); |
| int cipher_get_keyiv_len(const struct sshcipher_ctx *); |
| int cipher_get_keycontext(const struct sshcipher_ctx *, u_char *); |
| void cipher_set_keycontext(struct sshcipher_ctx *, const u_char *); |
| #endif /* CIPHER_H */ |
