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Annotation of src/usr.bin/ssh/cipher.h, Revision 1.32

1.32    ! stevesk     1: /*     $OpenBSD: cipher.h,v 1.31 2002/02/18 13:05:32 markus Exp $      */
        !             2:
1.1       deraadt     3: /*
1.9       deraadt     4:  * Author: Tatu Ylonen <ylo@cs.hut.fi>
                      5:  * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
                      6:  *                    All rights reserved
1.16      markus      7:  *
1.19      deraadt     8:  * As far as I am concerned, the code I have written for this software
                      9:  * can be used freely for any purpose.  Any derived versions of this
                     10:  * software must be clearly marked as such, and if the derived work is
                     11:  * incompatible with the protocol description in the RFC file, it must be
                     12:  * called by a name other than "ssh" or "Secure Shell".
1.20      markus     13:  *
                     14:  * Copyright (c) 2000 Markus Friedl.  All rights reserved.
                     15:  *
                     16:  * Redistribution and use in source and binary forms, with or without
                     17:  * modification, are permitted provided that the following conditions
                     18:  * are met:
                     19:  * 1. Redistributions of source code must retain the above copyright
                     20:  *    notice, this list of conditions and the following disclaimer.
                     21:  * 2. Redistributions in binary form must reproduce the above copyright
                     22:  *    notice, this list of conditions and the following disclaimer in the
                     23:  *    documentation and/or other materials provided with the distribution.
                     24:  *
                     25:  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
                     26:  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
                     27:  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
                     28:  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
                     29:  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
                     30:  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
                     31:  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
                     32:  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
                     33:  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
                     34:  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
1.9       deraadt    35:  */
1.1       deraadt    36:
                     37: #ifndef CIPHER_H
                     38: #define CIPHER_H
                     39:
1.31      markus     40: #include <openssl/evp.h>
1.20      markus     41: /*
                     42:  * Cipher types for SSH-1.  New types can be added, but old types should not
                     43:  * be removed for compatibility.  The maximum allowed value is 31.
                     44:  */
                     45: #define SSH_CIPHER_SSH2                -3
1.17      markus     46: #define SSH_CIPHER_ILLEGAL     -2      /* No valid cipher selected. */
1.9       deraadt    47: #define SSH_CIPHER_NOT_SET     -1      /* None selected (invalid number). */
                     48: #define SSH_CIPHER_NONE                0       /* no encryption */
                     49: #define SSH_CIPHER_IDEA                1       /* IDEA CFB */
                     50: #define SSH_CIPHER_DES         2       /* DES CBC */
                     51: #define SSH_CIPHER_3DES                3       /* 3DES CBC */
                     52: #define SSH_CIPHER_BROKEN_TSS  4       /* TRI's Simple Stream encryption CBC */
                     53: #define SSH_CIPHER_BROKEN_RC4  5       /* Alleged RC4 */
1.1       deraadt    54: #define SSH_CIPHER_BLOWFISH    6
1.12      markus     55: #define SSH_CIPHER_RESERVED    7
1.20      markus     56: #define SSH_CIPHER_MAX         31
1.12      markus     57:
1.30      markus     58: #define CIPHER_ENCRYPT         1
                     59: #define CIPHER_DECRYPT         0
                     60:
1.20      markus     61: typedef struct Cipher Cipher;
                     62: typedef struct CipherContext CipherContext;
1.1       deraadt    63:
1.30      markus     64: struct Cipher;
1.20      markus     65: struct CipherContext {
1.30      markus     66:        int     plaintext;
1.31      markus     67:        EVP_CIPHER_CTX evp;
1.20      markus     68:        Cipher *cipher;
                     69: };
                     70:
1.28      markus     71: u_int   cipher_mask_ssh1(int);
                     72: Cipher *cipher_by_name(const char *);
                     73: Cipher *cipher_by_number(int);
                     74: int     cipher_number(const char *);
                     75: char   *cipher_name(int);
                     76: int     ciphers_valid(const char *);
                     77: void    cipher_init(CipherContext *, Cipher *, const u_char *, u_int,
1.30      markus     78:     const u_char *, u_int, int);
                     79: void    cipher_crypt(CipherContext *, u_char *, const u_char *, u_int);
                     80: void    cipher_cleanup(CipherContext *);
                     81: void    cipher_set_key_string(CipherContext *, Cipher *, const char *, int);
                     82: u_int   cipher_blocksize(Cipher *);
                     83: u_int   cipher_keylen(Cipher *);
1.9       deraadt    84: #endif                         /* CIPHER_H */