10Sstevel@tonic-gate /* crypto/evp/e_des.c */
20Sstevel@tonic-gate /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
30Sstevel@tonic-gate * All rights reserved.
40Sstevel@tonic-gate *
50Sstevel@tonic-gate * This package is an SSL implementation written
60Sstevel@tonic-gate * by Eric Young (eay@cryptsoft.com).
70Sstevel@tonic-gate * The implementation was written so as to conform with Netscapes SSL.
80Sstevel@tonic-gate *
90Sstevel@tonic-gate * This library is free for commercial and non-commercial use as long as
100Sstevel@tonic-gate * the following conditions are aheared to. The following conditions
110Sstevel@tonic-gate * apply to all code found in this distribution, be it the RC4, RSA,
120Sstevel@tonic-gate * lhash, DES, etc., code; not just the SSL code. The SSL documentation
130Sstevel@tonic-gate * included with this distribution is covered by the same copyright terms
140Sstevel@tonic-gate * except that the holder is Tim Hudson (tjh@cryptsoft.com).
150Sstevel@tonic-gate *
160Sstevel@tonic-gate * Copyright remains Eric Young's, and as such any Copyright notices in
170Sstevel@tonic-gate * the code are not to be removed.
180Sstevel@tonic-gate * If this package is used in a product, Eric Young should be given attribution
190Sstevel@tonic-gate * as the author of the parts of the library used.
200Sstevel@tonic-gate * This can be in the form of a textual message at program startup or
210Sstevel@tonic-gate * in documentation (online or textual) provided with the package.
220Sstevel@tonic-gate *
230Sstevel@tonic-gate * Redistribution and use in source and binary forms, with or without
240Sstevel@tonic-gate * modification, are permitted provided that the following conditions
250Sstevel@tonic-gate * are met:
260Sstevel@tonic-gate * 1. Redistributions of source code must retain the copyright
270Sstevel@tonic-gate * notice, this list of conditions and the following disclaimer.
280Sstevel@tonic-gate * 2. Redistributions in binary form must reproduce the above copyright
290Sstevel@tonic-gate * notice, this list of conditions and the following disclaimer in the
300Sstevel@tonic-gate * documentation and/or other materials provided with the distribution.
310Sstevel@tonic-gate * 3. All advertising materials mentioning features or use of this software
320Sstevel@tonic-gate * must display the following acknowledgement:
330Sstevel@tonic-gate * "This product includes cryptographic software written by
340Sstevel@tonic-gate * Eric Young (eay@cryptsoft.com)"
350Sstevel@tonic-gate * The word 'cryptographic' can be left out if the rouines from the library
360Sstevel@tonic-gate * being used are not cryptographic related :-).
370Sstevel@tonic-gate * 4. If you include any Windows specific code (or a derivative thereof) from
380Sstevel@tonic-gate * the apps directory (application code) you must include an acknowledgement:
390Sstevel@tonic-gate * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
400Sstevel@tonic-gate *
410Sstevel@tonic-gate * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
420Sstevel@tonic-gate * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
430Sstevel@tonic-gate * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
440Sstevel@tonic-gate * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
450Sstevel@tonic-gate * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
460Sstevel@tonic-gate * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
470Sstevel@tonic-gate * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
480Sstevel@tonic-gate * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
490Sstevel@tonic-gate * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
500Sstevel@tonic-gate * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
510Sstevel@tonic-gate * SUCH DAMAGE.
520Sstevel@tonic-gate *
530Sstevel@tonic-gate * The licence and distribution terms for any publically available version or
540Sstevel@tonic-gate * derivative of this code cannot be changed. i.e. this code cannot simply be
550Sstevel@tonic-gate * copied and put under another distribution licence
560Sstevel@tonic-gate * [including the GNU Public Licence.]
570Sstevel@tonic-gate */
580Sstevel@tonic-gate
590Sstevel@tonic-gate #include <stdio.h>
600Sstevel@tonic-gate #include "cryptlib.h"
61*2139Sjp161948 #ifndef OPENSSL_NO_DES
620Sstevel@tonic-gate #include <openssl/evp.h>
630Sstevel@tonic-gate #include <openssl/objects.h>
640Sstevel@tonic-gate #include "evp_locl.h"
650Sstevel@tonic-gate #include <openssl/des.h>
66*2139Sjp161948 #include <openssl/rand.h>
670Sstevel@tonic-gate
680Sstevel@tonic-gate static int des_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
690Sstevel@tonic-gate const unsigned char *iv, int enc);
70*2139Sjp161948 static int des_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr);
710Sstevel@tonic-gate
720Sstevel@tonic-gate /* Because of various casts and different names can't use IMPLEMENT_BLOCK_CIPHER */
730Sstevel@tonic-gate
des_ecb_cipher(EVP_CIPHER_CTX * ctx,unsigned char * out,const unsigned char * in,unsigned int inl)740Sstevel@tonic-gate static int des_ecb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
750Sstevel@tonic-gate const unsigned char *in, unsigned int inl)
760Sstevel@tonic-gate {
770Sstevel@tonic-gate BLOCK_CIPHER_ecb_loop()
780Sstevel@tonic-gate DES_ecb_encrypt((DES_cblock *)(in + i), (DES_cblock *)(out + i), ctx->cipher_data, ctx->encrypt);
790Sstevel@tonic-gate return 1;
800Sstevel@tonic-gate }
810Sstevel@tonic-gate
des_ofb_cipher(EVP_CIPHER_CTX * ctx,unsigned char * out,const unsigned char * in,unsigned int inl)820Sstevel@tonic-gate static int des_ofb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
830Sstevel@tonic-gate const unsigned char *in, unsigned int inl)
840Sstevel@tonic-gate {
850Sstevel@tonic-gate DES_ofb64_encrypt(in, out, (long)inl, ctx->cipher_data, (DES_cblock *)ctx->iv, &ctx->num);
860Sstevel@tonic-gate return 1;
870Sstevel@tonic-gate }
880Sstevel@tonic-gate
des_cbc_cipher(EVP_CIPHER_CTX * ctx,unsigned char * out,const unsigned char * in,unsigned int inl)890Sstevel@tonic-gate static int des_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
900Sstevel@tonic-gate const unsigned char *in, unsigned int inl)
910Sstevel@tonic-gate {
920Sstevel@tonic-gate DES_ncbc_encrypt(in, out, (long)inl, ctx->cipher_data,
930Sstevel@tonic-gate (DES_cblock *)ctx->iv, ctx->encrypt);
940Sstevel@tonic-gate return 1;
950Sstevel@tonic-gate }
960Sstevel@tonic-gate
des_cfb64_cipher(EVP_CIPHER_CTX * ctx,unsigned char * out,const unsigned char * in,unsigned int inl)97*2139Sjp161948 static int des_cfb64_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
98*2139Sjp161948 const unsigned char *in, unsigned int inl)
990Sstevel@tonic-gate {
1000Sstevel@tonic-gate DES_cfb64_encrypt(in, out, (long)inl, ctx->cipher_data,
1010Sstevel@tonic-gate (DES_cblock *)ctx->iv, &ctx->num, ctx->encrypt);
1020Sstevel@tonic-gate return 1;
1030Sstevel@tonic-gate }
1040Sstevel@tonic-gate
105*2139Sjp161948 /* Although we have a CFB-r implementation for DES, it doesn't pack the right
106*2139Sjp161948 way, so wrap it here */
des_cfb1_cipher(EVP_CIPHER_CTX * ctx,unsigned char * out,const unsigned char * in,unsigned int inl)107*2139Sjp161948 static int des_cfb1_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
108*2139Sjp161948 const unsigned char *in, unsigned int inl)
109*2139Sjp161948 {
110*2139Sjp161948 unsigned int n;
111*2139Sjp161948 unsigned char c[1],d[1];
112*2139Sjp161948
113*2139Sjp161948 for(n=0 ; n < inl ; ++n)
114*2139Sjp161948 {
115*2139Sjp161948 c[0]=(in[n/8]&(1 << (7-n%8))) ? 0x80 : 0;
116*2139Sjp161948 DES_cfb_encrypt(c,d,1,1,ctx->cipher_data,(DES_cblock *)ctx->iv,
117*2139Sjp161948 ctx->encrypt);
118*2139Sjp161948 out[n/8]=(out[n/8]&~(0x80 >> (n%8)))|((d[0]&0x80) >> (n%8));
119*2139Sjp161948 }
120*2139Sjp161948 return 1;
121*2139Sjp161948 }
122*2139Sjp161948
des_cfb8_cipher(EVP_CIPHER_CTX * ctx,unsigned char * out,const unsigned char * in,unsigned int inl)123*2139Sjp161948 static int des_cfb8_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
124*2139Sjp161948 const unsigned char *in, unsigned int inl)
125*2139Sjp161948 {
126*2139Sjp161948 DES_cfb_encrypt(in,out,8,inl,ctx->cipher_data,(DES_cblock *)ctx->iv,
127*2139Sjp161948 ctx->encrypt);
128*2139Sjp161948 return 1;
129*2139Sjp161948 }
130*2139Sjp161948
1310Sstevel@tonic-gate BLOCK_CIPHER_defs(des, DES_key_schedule, NID_des, 8, 8, 8, 64,
132*2139Sjp161948 EVP_CIPH_RAND_KEY, des_init_key, NULL,
1330Sstevel@tonic-gate EVP_CIPHER_set_asn1_iv,
1340Sstevel@tonic-gate EVP_CIPHER_get_asn1_iv,
135*2139Sjp161948 des_ctrl)
1360Sstevel@tonic-gate
137*2139Sjp161948 BLOCK_CIPHER_def_cfb(des,DES_key_schedule,NID_des,8,8,1,
138*2139Sjp161948 EVP_CIPH_RAND_KEY, des_init_key,NULL,
139*2139Sjp161948 EVP_CIPHER_set_asn1_iv,
140*2139Sjp161948 EVP_CIPHER_get_asn1_iv,des_ctrl)
141*2139Sjp161948
142*2139Sjp161948 BLOCK_CIPHER_def_cfb(des,DES_key_schedule,NID_des,8,8,8,
143*2139Sjp161948 EVP_CIPH_RAND_KEY,des_init_key,NULL,
144*2139Sjp161948 EVP_CIPHER_set_asn1_iv,
145*2139Sjp161948 EVP_CIPHER_get_asn1_iv,des_ctrl)
1460Sstevel@tonic-gate
des_init_key(EVP_CIPHER_CTX * ctx,const unsigned char * key,const unsigned char * iv,int enc)1470Sstevel@tonic-gate static int des_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
1480Sstevel@tonic-gate const unsigned char *iv, int enc)
1490Sstevel@tonic-gate {
1500Sstevel@tonic-gate DES_cblock *deskey = (DES_cblock *)key;
151*2139Sjp161948 #ifdef EVP_CHECK_DES_KEY
152*2139Sjp161948 if(DES_set_key_checked(deskey,ctx->cipher_data) != 0)
153*2139Sjp161948 return 0;
154*2139Sjp161948 #else
1550Sstevel@tonic-gate DES_set_key_unchecked(deskey,ctx->cipher_data);
156*2139Sjp161948 #endif
1570Sstevel@tonic-gate return 1;
1580Sstevel@tonic-gate }
1590Sstevel@tonic-gate
des_ctrl(EVP_CIPHER_CTX * c,int type,int arg,void * ptr)160*2139Sjp161948 static int des_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr)
161*2139Sjp161948 {
162*2139Sjp161948
163*2139Sjp161948 switch(type)
164*2139Sjp161948 {
165*2139Sjp161948 case EVP_CTRL_RAND_KEY:
166*2139Sjp161948 if (RAND_bytes(ptr, 8) <= 0)
167*2139Sjp161948 return 0;
168*2139Sjp161948 DES_set_odd_parity((DES_cblock *)ptr);
169*2139Sjp161948 return 1;
170*2139Sjp161948
171*2139Sjp161948 default:
172*2139Sjp161948 return -1;
173*2139Sjp161948 }
174*2139Sjp161948 }
175*2139Sjp161948
1760Sstevel@tonic-gate #endif
177