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src/libdigidoc/openssl/crypto/rc5/rc5.h
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00001 /* crypto/rc5/rc5.h */
00002 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
00003  * All rights reserved.
00004  *
00005  * This package is an SSL implementation written
00006  * by Eric Young (eay@cryptsoft.com).
00007  * The implementation was written so as to conform with Netscapes SSL.
00008  * 
00009  * This library is free for commercial and non-commercial use as long as
00010  * the following conditions are aheared to.  The following conditions
00011  * apply to all code found in this distribution, be it the RC4, RSA,
00012  * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
00013  * included with this distribution is covered by the same copyright terms
00014  * except that the holder is Tim Hudson (tjh@cryptsoft.com).
00015  * 
00016  * Copyright remains Eric Young's, and as such any Copyright notices in
00017  * the code are not to be removed.
00018  * If this package is used in a product, Eric Young should be given attribution
00019  * as the author of the parts of the library used.
00020  * This can be in the form of a textual message at program startup or
00021  * in documentation (online or textual) provided with the package.
00022  * 
00023  * Redistribution and use in source and binary forms, with or without
00024  * modification, are permitted provided that the following conditions
00025  * are met:
00026  * 1. Redistributions of source code must retain the copyright
00027  *    notice, this list of conditions and the following disclaimer.
00028  * 2. Redistributions in binary form must reproduce the above copyright
00029  *    notice, this list of conditions and the following disclaimer in the
00030  *    documentation and/or other materials provided with the distribution.
00031  * 3. All advertising materials mentioning features or use of this software
00032  *    must display the following acknowledgement:
00033  *    "This product includes cryptographic software written by
00034  *     Eric Young (eay@cryptsoft.com)"
00035  *    The word 'cryptographic' can be left out if the rouines from the library
00036  *    being used are not cryptographic related :-).
00037  * 4. If you include any Windows specific code (or a derivative thereof) from 
00038  *    the apps directory (application code) you must include an acknowledgement:
00039  *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
00040  * 
00041  * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
00042  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
00043  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
00044  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
00045  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
00046  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
00047  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
00048  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
00049  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
00050  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
00051  * SUCH DAMAGE.
00052  * 
00053  * The licence and distribution terms for any publically available version or
00054  * derivative of this code cannot be changed.  i.e. this code cannot simply be
00055  * copied and put under another distribution licence
00056  * [including the GNU Public Licence.]
00057  */
00058 
00059 #ifndef HEADER_RC5_H
00060 #define HEADER_RC5_H
00061 
00062 #include <openssl/opensslconf.h> /* OPENSSL_NO_RC5 */
00063 
00064 #ifdef  __cplusplus
00065 extern "C" {
00066 #endif
00067 
00068 #ifdef OPENSSL_NO_RC5
00069 #error RC5 is disabled.
00070 #endif
00071 
00072 #define RC5_ENCRYPT     1
00073 #define RC5_DECRYPT     0
00074 
00075 /* 32 bit.  For Alpha, things may get weird */
00076 #define RC5_32_INT unsigned long
00077 
00078 #define RC5_32_BLOCK            8
00079 #define RC5_32_KEY_LENGTH       16 /* This is a default, max is 255 */
00080 
00081 /* This are the only values supported.  Tweak the code if you want more
00082  * The most supported modes will be
00083  * RC5-32/12/16
00084  * RC5-32/16/8
00085  */
00086 #define RC5_8_ROUNDS    8
00087 #define RC5_12_ROUNDS   12
00088 #define RC5_16_ROUNDS   16
00089 
00090 typedef struct rc5_key_st
00091         {
00092         /* Number of rounds */
00093         int rounds;
00094         RC5_32_INT data[2*(RC5_16_ROUNDS+1)];
00095         } RC5_32_KEY;
00096 
00097 #ifdef OPENSSL_FIPS 
00098 void private_RC5_32_set_key(RC5_32_KEY *key, int len, const unsigned char *data,
00099         int rounds);
00100 #endif
00101 void RC5_32_set_key(RC5_32_KEY *key, int len, const unsigned char *data,
00102         int rounds);
00103 void RC5_32_ecb_encrypt(const unsigned char *in,unsigned char *out,RC5_32_KEY *key,
00104         int enc);
00105 void RC5_32_encrypt(unsigned long *data,RC5_32_KEY *key);
00106 void RC5_32_decrypt(unsigned long *data,RC5_32_KEY *key);
00107 void RC5_32_cbc_encrypt(const unsigned char *in, unsigned char *out,
00108                         long length, RC5_32_KEY *ks, unsigned char *iv,
00109                         int enc);
00110 void RC5_32_cfb64_encrypt(const unsigned char *in, unsigned char *out,
00111                           long length, RC5_32_KEY *schedule,
00112                           unsigned char *ivec, int *num, int enc);
00113 void RC5_32_ofb64_encrypt(const unsigned char *in, unsigned char *out,
00114                           long length, RC5_32_KEY *schedule,
00115                           unsigned char *ivec, int *num);
00116 
00117 #ifdef  __cplusplus
00118 }
00119 #endif
00120 
00121 #endif
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