net-snmp 5.7
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00001 /* crypto/des/des.h */ 00002 /* Copyright (C) 1995-1997 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 /* Copied roughly from opensslconf.h which it's a little more complex */ 00060 #define DES_LONG unsigned long 00061 00062 #ifndef HEADER_NEW_DES_H 00063 #define HEADER_NEW_DES_H 00064 00065 #ifdef OPENSSL_NO_DES 00066 #error DES is disabled. 00067 #endif 00068 00069 #ifdef OPENSSL_BUILD_SHLIBCRYPTO 00070 # undef OPENSSL_EXTERN 00071 # define OPENSSL_EXTERN OPENSSL_EXPORT 00072 #endif 00073 00074 #ifdef __cplusplus 00075 extern "C" { 00076 #endif 00077 00078 typedef unsigned char DES_cblock[8]; 00079 typedef /* const */ unsigned char const_DES_cblock[8]; 00080 /* With "const", gcc 2.8.1 on Solaris thinks that DES_cblock * 00081 * and const_DES_cblock * are incompatible pointer types. */ 00082 00083 typedef struct DES_ks 00084 { 00085 union 00086 { 00087 DES_cblock cblock; 00088 /* make sure things are correct size on machines with 00089 * 8 byte longs */ 00090 DES_LONG deslong[2]; 00091 } ks[16]; 00092 } DES_key_schedule; 00093 00094 #ifndef OPENSSL_DISABLE_OLD_DES_SUPPORT 00095 # ifndef OPENSSL_ENABLE_OLD_DES_SUPPORT 00096 # define OPENSSL_ENABLE_OLD_DES_SUPPORT 00097 # endif 00098 #endif 00099 00100 #define DES_KEY_SZ (sizeof(DES_cblock)) 00101 #define DES_SCHEDULE_SZ (sizeof(DES_key_schedule)) 00102 00103 #define DES_ENCRYPT 1 00104 #define DES_DECRYPT 0 00105 00106 #define DES_CBC_MODE 0 00107 #define DES_PCBC_MODE 1 00108 00109 #define DES_ecb2_encrypt(i,o,k1,k2,e) \ 00110 DES_ecb3_encrypt((i),(o),(k1),(k2),(k1),(e)) 00111 00112 #define DES_ede2_cbc_encrypt(i,o,l,k1,k2,iv,e) \ 00113 DES_ede3_cbc_encrypt((i),(o),(l),(k1),(k2),(k1),(iv),(e)) 00114 00115 #define DES_ede2_cfb64_encrypt(i,o,l,k1,k2,iv,n,e) \ 00116 DES_ede3_cfb64_encrypt((i),(o),(l),(k1),(k2),(k1),(iv),(n),(e)) 00117 00118 #define DES_ede2_ofb64_encrypt(i,o,l,k1,k2,iv,n) \ 00119 DES_ede3_ofb64_encrypt((i),(o),(l),(k1),(k2),(k1),(iv),(n)) 00120 00121 const char *DES_options(void); 00122 void DES_ecb3_encrypt(const_DES_cblock *input, DES_cblock *output, 00123 DES_key_schedule *ks1,DES_key_schedule *ks2, 00124 DES_key_schedule *ks3, int enc); 00125 DES_LONG DES_cbc_cksum(const unsigned char *input,DES_cblock *output, 00126 long length,DES_key_schedule *schedule, 00127 const_DES_cblock *ivec); 00128 /* DES_cbc_encrypt does not update the IV! Use DES_ncbc_encrypt instead. */ 00129 void DES_cbc_encrypt(const unsigned char *input,unsigned char *output, 00130 long length,DES_key_schedule *schedule,DES_cblock *ivec, 00131 int enc); 00132 void DES_ncbc_encrypt(const unsigned char *input,unsigned char *output, 00133 long length,DES_key_schedule *schedule,DES_cblock *ivec, 00134 int enc); 00135 void DES_xcbc_encrypt(const unsigned char *input,unsigned char *output, 00136 long length,DES_key_schedule *schedule,DES_cblock *ivec, 00137 const_DES_cblock *inw,const_DES_cblock *outw,int enc); 00138 void DES_cfb_encrypt(const unsigned char *in,unsigned char *out,int numbits, 00139 long length,DES_key_schedule *schedule,DES_cblock *ivec, 00140 int enc); 00141 void DES_ecb_encrypt(const_DES_cblock *input,DES_cblock *output, 00142 DES_key_schedule *ks,int enc); 00143 00144 /* This is the DES encryption function that gets called by just about 00145 every other DES routine in the library. You should not use this 00146 function except to implement 'modes' of DES. I say this because the 00147 functions that call this routine do the conversion from 'char *' to 00148 long, and this needs to be done to make sure 'non-aligned' memory 00149 access do not occur. The characters are loaded 'little endian'. 00150 Data is a pointer to 2 unsigned long's and ks is the 00151 DES_key_schedule to use. enc, is non zero specifies encryption, 00152 zero if decryption. */ 00153 void DES_encrypt1(DES_LONG *data,DES_key_schedule *ks, int enc); 00154 00155 /* This functions is the same as DES_encrypt1() except that the DES 00156 initial permutation (IP) and final permutation (FP) have been left 00157 out. As for DES_encrypt1(), you should not use this function. 00158 It is used by the routines in the library that implement triple DES. 00159 IP() DES_encrypt2() DES_encrypt2() DES_encrypt2() FP() is the same 00160 as DES_encrypt1() DES_encrypt1() DES_encrypt1() except faster :-). */ 00161 void DES_encrypt2(DES_LONG *data,DES_key_schedule *ks, int enc); 00162 00163 void DES_encrypt3(DES_LONG *data, DES_key_schedule *ks1, 00164 DES_key_schedule *ks2, DES_key_schedule *ks3); 00165 void DES_decrypt3(DES_LONG *data, DES_key_schedule *ks1, 00166 DES_key_schedule *ks2, DES_key_schedule *ks3); 00167 void DES_ede3_cbc_encrypt(const unsigned char *input,unsigned char *output, 00168 long length, 00169 DES_key_schedule *ks1,DES_key_schedule *ks2, 00170 DES_key_schedule *ks3,DES_cblock *ivec,int enc); 00171 void DES_ede3_cbcm_encrypt(const unsigned char *in,unsigned char *out, 00172 long length, 00173 DES_key_schedule *ks1,DES_key_schedule *ks2, 00174 DES_key_schedule *ks3, 00175 DES_cblock *ivec1,DES_cblock *ivec2, 00176 int enc); 00177 void DES_ede3_cfb64_encrypt(const unsigned char *in,unsigned char *out, 00178 long length,DES_key_schedule *ks1, 00179 DES_key_schedule *ks2,DES_key_schedule *ks3, 00180 DES_cblock *ivec,int *num,int enc); 00181 void DES_ede3_cfb_encrypt(const unsigned char *in,unsigned char *out, 00182 int numbits,long length,DES_key_schedule *ks1, 00183 DES_key_schedule *ks2,DES_key_schedule *ks3, 00184 DES_cblock *ivec,int enc); 00185 void DES_ede3_ofb64_encrypt(const unsigned char *in,unsigned char *out, 00186 long length,DES_key_schedule *ks1, 00187 DES_key_schedule *ks2,DES_key_schedule *ks3, 00188 DES_cblock *ivec,int *num); 00189 #if 0 00190 void DES_xwhite_in2out(const_DES_cblock *DES_key,const_DES_cblock *in_white, 00191 DES_cblock *out_white); 00192 #endif 00193 00194 int DES_enc_read(int fd,void *buf,int len,DES_key_schedule *sched, 00195 DES_cblock *iv); 00196 int DES_enc_write(int fd,const void *buf,int len,DES_key_schedule *sched, 00197 DES_cblock *iv); 00198 char *DES_fcrypt(const char *buf,const char *salt, char *ret); 00199 char *DES_crypt(const char *buf,const char *salt); 00200 void DES_ofb_encrypt(const unsigned char *in,unsigned char *out,int numbits, 00201 long length,DES_key_schedule *schedule,DES_cblock *ivec); 00202 void DES_pcbc_encrypt(const unsigned char *input,unsigned char *output, 00203 long length,DES_key_schedule *schedule,DES_cblock *ivec, 00204 int enc); 00205 DES_LONG DES_quad_cksum(const unsigned char *input,DES_cblock output[], 00206 long length,int out_count,DES_cblock *seed); 00207 int DES_random_key(DES_cblock *ret); 00208 void DES_set_odd_parity(DES_cblock *key); 00209 int DES_check_key_parity(const_DES_cblock *key); 00210 int DES_is_weak_key(const_DES_cblock *key); 00211 /* DES_set_key (= set_key = DES_key_sched = key_sched) calls 00212 * DES_set_key_checked if global variable DES_check_key is set, 00213 * DES_set_key_unchecked otherwise. */ 00214 int DES_set_key(const_DES_cblock *key,DES_key_schedule *schedule); 00215 int DES_key_sched(const_DES_cblock *key,DES_key_schedule *schedule); 00216 int DES_set_key_checked(const_DES_cblock *key,DES_key_schedule *schedule); 00217 void DES_set_key_unchecked(const_DES_cblock *key,DES_key_schedule *schedule); 00218 void DES_string_to_key(const char *str,DES_cblock *key); 00219 void DES_string_to_2keys(const char *str,DES_cblock *key1,DES_cblock *key2); 00220 void DES_cfb64_encrypt(const unsigned char *in,unsigned char *out,long length, 00221 DES_key_schedule *schedule,DES_cblock *ivec,int *num, 00222 int enc); 00223 void DES_ofb64_encrypt(const unsigned char *in,unsigned char *out,long length, 00224 DES_key_schedule *schedule,DES_cblock *ivec,int *num); 00225 00226 int DES_read_password(DES_cblock *key, const char *prompt, int verify); 00227 int DES_read_2passwords(DES_cblock *key1, DES_cblock *key2, const char *prompt, 00228 int verify); 00229 00230 #define DES_fixup_key_parity DES_set_odd_parity 00231 00232 #ifdef __cplusplus 00233 } 00234 #endif 00235 00236 #endif