xref: /onnv-gate/usr/src/common/openssl/crypto/evp/e_des.c (revision 2139:6243c3338933)
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