xref: /onnv-gate/usr/src/common/openssl/crypto/evp/p_open.c (revision 2139:6243c3338933)
10Sstevel@tonic-gate /* crypto/evp/p_open.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 
62*2139Sjp161948 #ifndef OPENSSL_NO_RSA
63*2139Sjp161948 
640Sstevel@tonic-gate #include <openssl/evp.h>
650Sstevel@tonic-gate #include <openssl/objects.h>
660Sstevel@tonic-gate #include <openssl/x509.h>
67*2139Sjp161948 #include <openssl/rsa.h>
680Sstevel@tonic-gate 
EVP_OpenInit(EVP_CIPHER_CTX * ctx,const EVP_CIPHER * type,const unsigned char * ek,int ekl,const unsigned char * iv,EVP_PKEY * priv)69*2139Sjp161948 int EVP_OpenInit(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *type,
70*2139Sjp161948 	const unsigned char *ek, int ekl, const unsigned char *iv,
71*2139Sjp161948 	EVP_PKEY *priv)
720Sstevel@tonic-gate 	{
730Sstevel@tonic-gate 	unsigned char *key=NULL;
740Sstevel@tonic-gate 	int i,size=0,ret=0;
750Sstevel@tonic-gate 
760Sstevel@tonic-gate 	if(type) {
770Sstevel@tonic-gate 		EVP_CIPHER_CTX_init(ctx);
780Sstevel@tonic-gate 		if(!EVP_DecryptInit_ex(ctx,type,NULL, NULL,NULL)) return 0;
790Sstevel@tonic-gate 	}
800Sstevel@tonic-gate 
810Sstevel@tonic-gate 	if(!priv) return 1;
820Sstevel@tonic-gate 
830Sstevel@tonic-gate 	if (priv->type != EVP_PKEY_RSA)
840Sstevel@tonic-gate 		{
850Sstevel@tonic-gate 		EVPerr(EVP_F_EVP_OPENINIT,EVP_R_PUBLIC_KEY_NOT_RSA);
860Sstevel@tonic-gate 		goto err;
870Sstevel@tonic-gate                 }
880Sstevel@tonic-gate 
890Sstevel@tonic-gate 	size=RSA_size(priv->pkey.rsa);
900Sstevel@tonic-gate 	key=(unsigned char *)OPENSSL_malloc(size+2);
910Sstevel@tonic-gate 	if (key == NULL)
920Sstevel@tonic-gate 		{
930Sstevel@tonic-gate 		/* ERROR */
940Sstevel@tonic-gate 		EVPerr(EVP_F_EVP_OPENINIT,ERR_R_MALLOC_FAILURE);
950Sstevel@tonic-gate 		goto err;
960Sstevel@tonic-gate 		}
970Sstevel@tonic-gate 
980Sstevel@tonic-gate 	i=EVP_PKEY_decrypt(key,ek,ekl,priv);
990Sstevel@tonic-gate 	if ((i <= 0) || !EVP_CIPHER_CTX_set_key_length(ctx, i))
1000Sstevel@tonic-gate 		{
1010Sstevel@tonic-gate 		/* ERROR */
1020Sstevel@tonic-gate 		goto err;
1030Sstevel@tonic-gate 		}
1040Sstevel@tonic-gate 	if(!EVP_DecryptInit_ex(ctx,NULL,NULL,key,iv)) goto err;
1050Sstevel@tonic-gate 
1060Sstevel@tonic-gate 	ret=1;
1070Sstevel@tonic-gate err:
1080Sstevel@tonic-gate 	if (key != NULL) OPENSSL_cleanse(key,size);
1090Sstevel@tonic-gate 	OPENSSL_free(key);
1100Sstevel@tonic-gate 	return(ret);
1110Sstevel@tonic-gate 	}
1120Sstevel@tonic-gate 
EVP_OpenFinal(EVP_CIPHER_CTX * ctx,unsigned char * out,int * outl)1130Sstevel@tonic-gate int EVP_OpenFinal(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl)
1140Sstevel@tonic-gate 	{
1150Sstevel@tonic-gate 	int i;
1160Sstevel@tonic-gate 
1170Sstevel@tonic-gate 	i=EVP_DecryptFinal_ex(ctx,out,outl);
1180Sstevel@tonic-gate 	EVP_DecryptInit_ex(ctx,NULL,NULL,NULL,NULL);
1190Sstevel@tonic-gate 	return(i);
1200Sstevel@tonic-gate 	}
1210Sstevel@tonic-gate #else /* !OPENSSL_NO_RSA */
1220Sstevel@tonic-gate 
1230Sstevel@tonic-gate # ifdef PEDANTIC
1240Sstevel@tonic-gate static void *dummy=&dummy;
1250Sstevel@tonic-gate # endif
1260Sstevel@tonic-gate 
1270Sstevel@tonic-gate #endif
128