11305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood/* $OpenBSD: cipher.h,v 1.37 2009/01/26 09:58:15 markus Exp $ */ 21305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood 31305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood/* 41305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood * Author: Tatu Ylonen <ylo@cs.hut.fi> 51305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland 61305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood * All rights reserved 71305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood * 81305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood * As far as I am concerned, the code I have written for this software 91305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood * can be used freely for any purpose. Any derived versions of this 101305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood * software must be clearly marked as such, and if the derived work is 111305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood * incompatible with the protocol description in the RFC file, it must be 121305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood * called by a name other than "ssh" or "Secure Shell". 131305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood * 141305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood * Copyright (c) 2000 Markus Friedl. All rights reserved. 151305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood * 161305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood * Redistribution and use in source and binary forms, with or without 171305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood * modification, are permitted provided that the following conditions 181305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood * are met: 191305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood * 1. Redistributions of source code must retain the above copyright 201305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood * notice, this list of conditions and the following disclaimer. 211305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood * 2. Redistributions in binary form must reproduce the above copyright 221305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood * notice, this list of conditions and the following disclaimer in the 231305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood * documentation and/or other materials provided with the distribution. 241305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood * 251305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 261305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 271305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 281305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 291305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 301305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 311305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 321305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 331305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 341305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 351305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood */ 361305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood 371305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood#ifndef CIPHER_H 381305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood#define CIPHER_H 391305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood 401305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood#include <openssl/evp.h> 411305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood/* 421305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood * Cipher types for SSH-1. New types can be added, but old types should not 431305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood * be removed for compatibility. The maximum allowed value is 31. 441305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood */ 451305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood#define SSH_CIPHER_SSH2 -3 461305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood#define SSH_CIPHER_INVALID -2 /* No valid cipher selected. */ 471305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood#define SSH_CIPHER_NOT_SET -1 /* None selected (invalid number). */ 481305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood#define SSH_CIPHER_NONE 0 /* no encryption */ 491305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood#define SSH_CIPHER_IDEA 1 /* IDEA CFB */ 501305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood#define SSH_CIPHER_DES 2 /* DES CBC */ 511305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood#define SSH_CIPHER_3DES 3 /* 3DES CBC */ 521305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood#define SSH_CIPHER_BROKEN_TSS 4 /* TRI's Simple Stream encryption CBC */ 531305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood#define SSH_CIPHER_BROKEN_RC4 5 /* Alleged RC4 */ 541305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood#define SSH_CIPHER_BLOWFISH 6 551305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood#define SSH_CIPHER_RESERVED 7 561305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood#define SSH_CIPHER_MAX 31 571305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood 581305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood#define CIPHER_ENCRYPT 1 591305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood#define CIPHER_DECRYPT 0 601305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood 611305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwoodtypedef struct Cipher Cipher; 621305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwoodtypedef struct CipherContext CipherContext; 631305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood 641305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwoodstruct Cipher; 651305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwoodstruct CipherContext { 661305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood int plaintext; 671305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood EVP_CIPHER_CTX evp; 681305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood Cipher *cipher; 691305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood}; 701305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood 711305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwoodu_int cipher_mask_ssh1(int); 721305e95ba6ff9fa202d0818caf10405df4b0f648Mike LockwoodCipher *cipher_by_name(const char *); 731305e95ba6ff9fa202d0818caf10405df4b0f648Mike LockwoodCipher *cipher_by_number(int); 741305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwoodint cipher_number(const char *); 751305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwoodchar *cipher_name(int); 761305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwoodint ciphers_valid(const char *); 771305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwoodvoid cipher_init(CipherContext *, Cipher *, const u_char *, u_int, 781305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood const u_char *, u_int, int); 791305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwoodvoid cipher_crypt(CipherContext *, u_char *, const u_char *, u_int); 801305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwoodvoid cipher_cleanup(CipherContext *); 811305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwoodvoid cipher_set_key_string(CipherContext *, Cipher *, const char *, int); 821305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwoodu_int cipher_blocksize(const Cipher *); 831305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwoodu_int cipher_keylen(const Cipher *); 841305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwoodu_int cipher_is_cbc(const Cipher *); 851305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood 861305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwoodu_int cipher_get_number(const Cipher *); 871305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwoodvoid cipher_get_keyiv(CipherContext *, u_char *, u_int); 881305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwoodvoid cipher_set_keyiv(CipherContext *, u_char *); 891305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwoodint cipher_get_keyiv_len(const CipherContext *); 901305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwoodint cipher_get_keycontext(const CipherContext *, u_char *); 911305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwoodvoid cipher_set_keycontext(CipherContext *, u_char *); 921305e95ba6ff9fa202d0818caf10405df4b0f648Mike Lockwood#endif /* CIPHER_H */ 93