xref: /onnv-gate/usr/src/common/openssl/crypto/evp/evp_lib.c (revision 2139:6243c3338933)
10Sstevel@tonic-gate /* crypto/evp/evp_lib.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"
610Sstevel@tonic-gate #include <openssl/evp.h>
620Sstevel@tonic-gate #include <openssl/objects.h>
630Sstevel@tonic-gate 
EVP_CIPHER_param_to_asn1(EVP_CIPHER_CTX * c,ASN1_TYPE * type)640Sstevel@tonic-gate int EVP_CIPHER_param_to_asn1(EVP_CIPHER_CTX *c, ASN1_TYPE *type)
650Sstevel@tonic-gate 	{
660Sstevel@tonic-gate 	int ret;
670Sstevel@tonic-gate 
680Sstevel@tonic-gate 	if (c->cipher->set_asn1_parameters != NULL)
690Sstevel@tonic-gate 		ret=c->cipher->set_asn1_parameters(c,type);
700Sstevel@tonic-gate 	else
71*2139Sjp161948 		ret=-1;
720Sstevel@tonic-gate 	return(ret);
730Sstevel@tonic-gate 	}
740Sstevel@tonic-gate 
EVP_CIPHER_asn1_to_param(EVP_CIPHER_CTX * c,ASN1_TYPE * type)750Sstevel@tonic-gate int EVP_CIPHER_asn1_to_param(EVP_CIPHER_CTX *c, ASN1_TYPE *type)
760Sstevel@tonic-gate 	{
770Sstevel@tonic-gate 	int ret;
780Sstevel@tonic-gate 
790Sstevel@tonic-gate 	if (c->cipher->get_asn1_parameters != NULL)
800Sstevel@tonic-gate 		ret=c->cipher->get_asn1_parameters(c,type);
810Sstevel@tonic-gate 	else
82*2139Sjp161948 		ret=-1;
830Sstevel@tonic-gate 	return(ret);
840Sstevel@tonic-gate 	}
850Sstevel@tonic-gate 
EVP_CIPHER_get_asn1_iv(EVP_CIPHER_CTX * c,ASN1_TYPE * type)860Sstevel@tonic-gate int EVP_CIPHER_get_asn1_iv(EVP_CIPHER_CTX *c, ASN1_TYPE *type)
870Sstevel@tonic-gate 	{
88*2139Sjp161948 	int i=0;
89*2139Sjp161948 	unsigned int l;
900Sstevel@tonic-gate 
910Sstevel@tonic-gate 	if (type != NULL)
920Sstevel@tonic-gate 		{
930Sstevel@tonic-gate 		l=EVP_CIPHER_CTX_iv_length(c);
94*2139Sjp161948 		OPENSSL_assert(l <= sizeof(c->iv));
950Sstevel@tonic-gate 		i=ASN1_TYPE_get_octetstring(type,c->oiv,l);
96*2139Sjp161948 		if (i != (int)l)
970Sstevel@tonic-gate 			return(-1);
980Sstevel@tonic-gate 		else if (i > 0)
990Sstevel@tonic-gate 			memcpy(c->iv,c->oiv,l);
1000Sstevel@tonic-gate 		}
1010Sstevel@tonic-gate 	return(i);
1020Sstevel@tonic-gate 	}
1030Sstevel@tonic-gate 
EVP_CIPHER_set_asn1_iv(EVP_CIPHER_CTX * c,ASN1_TYPE * type)1040Sstevel@tonic-gate int EVP_CIPHER_set_asn1_iv(EVP_CIPHER_CTX *c, ASN1_TYPE *type)
1050Sstevel@tonic-gate 	{
106*2139Sjp161948 	int i=0;
107*2139Sjp161948 	unsigned int j;
1080Sstevel@tonic-gate 
1090Sstevel@tonic-gate 	if (type != NULL)
1100Sstevel@tonic-gate 		{
1110Sstevel@tonic-gate 		j=EVP_CIPHER_CTX_iv_length(c);
112*2139Sjp161948 		OPENSSL_assert(j <= sizeof(c->iv));
1130Sstevel@tonic-gate 		i=ASN1_TYPE_set_octetstring(type,c->oiv,j);
1140Sstevel@tonic-gate 		}
1150Sstevel@tonic-gate 	return(i);
1160Sstevel@tonic-gate 	}
1170Sstevel@tonic-gate 
1180Sstevel@tonic-gate /* Convert the various cipher NIDs and dummies to a proper OID NID */
EVP_CIPHER_type(const EVP_CIPHER * ctx)1190Sstevel@tonic-gate int EVP_CIPHER_type(const EVP_CIPHER *ctx)
1200Sstevel@tonic-gate {
1210Sstevel@tonic-gate 	int nid;
1220Sstevel@tonic-gate 	ASN1_OBJECT *otmp;
1230Sstevel@tonic-gate 	nid = EVP_CIPHER_nid(ctx);
1240Sstevel@tonic-gate 
1250Sstevel@tonic-gate 	switch(nid) {
1260Sstevel@tonic-gate 
1270Sstevel@tonic-gate 		case NID_rc2_cbc:
1280Sstevel@tonic-gate 		case NID_rc2_64_cbc:
1290Sstevel@tonic-gate 		case NID_rc2_40_cbc:
1300Sstevel@tonic-gate 
1310Sstevel@tonic-gate 		return NID_rc2_cbc;
1320Sstevel@tonic-gate 
1330Sstevel@tonic-gate 		case NID_rc4:
1340Sstevel@tonic-gate 		case NID_rc4_40:
1350Sstevel@tonic-gate 
1360Sstevel@tonic-gate 		return NID_rc4;
1370Sstevel@tonic-gate 
138*2139Sjp161948 		case NID_aes_128_cfb128:
139*2139Sjp161948 		case NID_aes_128_cfb8:
140*2139Sjp161948 		case NID_aes_128_cfb1:
141*2139Sjp161948 
142*2139Sjp161948 		return NID_aes_128_cfb128;
143*2139Sjp161948 
144*2139Sjp161948 		case NID_aes_192_cfb128:
145*2139Sjp161948 		case NID_aes_192_cfb8:
146*2139Sjp161948 		case NID_aes_192_cfb1:
147*2139Sjp161948 
148*2139Sjp161948 		return NID_aes_192_cfb128;
149*2139Sjp161948 
150*2139Sjp161948 		case NID_aes_256_cfb128:
151*2139Sjp161948 		case NID_aes_256_cfb8:
152*2139Sjp161948 		case NID_aes_256_cfb1:
153*2139Sjp161948 
154*2139Sjp161948 		return NID_aes_256_cfb128;
155*2139Sjp161948 
156*2139Sjp161948 		case NID_des_cfb64:
157*2139Sjp161948 		case NID_des_cfb8:
158*2139Sjp161948 		case NID_des_cfb1:
159*2139Sjp161948 
160*2139Sjp161948 		return NID_des_cfb64;
161*2139Sjp161948 
1620Sstevel@tonic-gate 		default:
1630Sstevel@tonic-gate 		/* Check it has an OID and it is valid */
1640Sstevel@tonic-gate 		otmp = OBJ_nid2obj(nid);
1650Sstevel@tonic-gate 		if(!otmp || !otmp->data) nid = NID_undef;
1660Sstevel@tonic-gate 		ASN1_OBJECT_free(otmp);
1670Sstevel@tonic-gate 		return nid;
1680Sstevel@tonic-gate 	}
1690Sstevel@tonic-gate }
1700Sstevel@tonic-gate 
171