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Annotation of src/usr.bin/ssh/cipher.h, Revision 1.53

1.53    ! djm         1: /* $OpenBSD: cipher.h,v 1.52 2017/05/07 23:12:57 djm Exp $ */
1.32      stevesk     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:
1.46      djm        40: #include <sys/types.h>
1.31      markus     41: #include <openssl/evp.h>
1.42      djm        42: #include "cipher-chachapoly.h"
1.45      markus     43: #include "cipher-aesctr.h"
1.42      djm        44:
1.30      markus     45: #define CIPHER_ENCRYPT         1
                     46: #define CIPHER_DECRYPT         0
                     47:
1.46      djm        48: struct sshcipher;
1.49      djm        49: struct sshcipher_ctx;
1.46      djm        50:
                     51: const struct sshcipher *cipher_by_name(const char *);
1.47      markus     52: const char *cipher_warning_message(const struct sshcipher_ctx *);
1.28      markus     53: int     ciphers_valid(const char *);
1.42      djm        54: char   *cipher_alg_list(char, int);
1.49      djm        55: int     cipher_init(struct sshcipher_ctx **, const struct sshcipher *,
1.46      djm        56:     const u_char *, u_int, const u_char *, u_int, int);
                     57: int     cipher_crypt(struct sshcipher_ctx *, u_int, u_char *, const u_char *,
1.39      markus     58:     u_int, u_int, u_int);
1.46      djm        59: int     cipher_get_length(struct sshcipher_ctx *, u_int *, u_int,
1.42      djm        60:     const u_char *, u_int);
1.49      djm        61: void    cipher_free(struct sshcipher_ctx *);
1.46      djm        62: u_int   cipher_blocksize(const struct sshcipher *);
                     63: u_int   cipher_keylen(const struct sshcipher *);
                     64: u_int   cipher_seclen(const struct sshcipher *);
                     65: u_int   cipher_authlen(const struct sshcipher *);
                     66: u_int   cipher_ivlen(const struct sshcipher *);
                     67: u_int   cipher_is_cbc(const struct sshcipher *);
                     68:
1.49      djm        69: u_int   cipher_ctx_is_plaintext(struct sshcipher_ctx *);
                     70:
1.53    ! djm        71: int     cipher_get_keyiv(struct sshcipher_ctx *, u_char *, size_t);
        !            72: int     cipher_set_keyiv(struct sshcipher_ctx *, const u_char *, size_t);
1.46      djm        73: int     cipher_get_keyiv_len(const struct sshcipher_ctx *);
1.49      djm        74:
1.9       deraadt    75: #endif                         /* CIPHER_H */