[apple/security.git] / OSX / libsecurity_apple_csp / open_ssl / rsa / rsa_sign.c

/*
 * Copyright (c) 2000-2001,2011,2014 Apple Inc. All Rights Reserved.
 * 
 * The contents of this file constitute Original Code as defined in and are
 * subject to the Apple Public Source License Version 1.2 (the 'License').
 * You may not use this file except in compliance with the License. Please obtain
 * a copy of the License at http://www.apple.com/publicsource and read it before
 * using this file.
 * 
 * This Original Code and all software distributed under the License are
 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS
 * OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, INCLUDING WITHOUT
 * LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
 * PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. Please see the License for the
 * specific language governing rights and limitations under the License.
 */


/* crypto/rsa/rsa_sign.c */
/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
 * All rights reserved.
 *
 * This package is an SSL implementation written
 * by Eric Young (eay@cryptsoft.com).
 * The implementation was written so as to conform with Netscapes SSL.
 * 
 * This library is free for commercial and non-commercial use as long as
 * the following conditions are aheared to.  The following conditions
 * apply to all code found in this distribution, be it the RC4, RSA,
 * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
 * included with this distribution is covered by the same copyright terms
 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
 * 
 * Copyright remains Eric Young's, and as such any Copyright notices in
 * the code are not to be removed.
 * If this package is used in a product, Eric Young should be given attribution
 * as the author of the parts of the library used.
 * This can be in the form of a textual message at program startup or
 * in documentation (online or textual) provided with the package.
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *    "This product includes cryptographic software written by
 *     Eric Young (eay@cryptsoft.com)"
 *    The word 'cryptographic' can be left out if the rouines from the library
 *    being used are not cryptographic related :-).
 * 4. If you include any Windows specific code (or a derivative thereof) from 
 *    the apps directory (application code) you must include an acknowledgement:
 *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
 * 
 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 * 
 * The licence and distribution terms for any publically available version or
 * derivative of this code cannot be changed.  i.e. this code cannot simply be
 * copied and put under another distribution licence
 * [including the GNU Public Licence.]
 */

#include <stdio.h>
#include "cryptlib.h"
#include <openssl/bn.h>
#include <openssl/rsa.h>
#include <openssl/objects.h>
#include <openssl/x509.h>

/* Size of an SSL signature: MD5+SHA1 */
#define SSL_SIG_LENGTH	36

int RSA_sign(int type, unsigned char *m, unsigned int m_len,
	     unsigned char *sigret, unsigned int *siglen, RSA *rsa)
	{
	X509_SIG sig;
	ASN1_TYPE parameter;
	int i,j,ret=1;
	unsigned char *p,*s = NULL;
	X509_ALGOR algor;
	ASN1_OCTET_STRING digest;
	if(rsa->flags & RSA_FLAG_SIGN_VER)
	      return rsa->meth->rsa_sign(type, m, m_len, sigret, siglen, rsa);
	/* Special case: SSL signature, just check the length */
	if(type == NID_md5_sha1) {
		if(m_len != SSL_SIG_LENGTH) {
			RSAerr(RSA_F_RSA_SIGN,RSA_R_INVALID_MESSAGE_LENGTH);
			return(0);
		}
		i = SSL_SIG_LENGTH;
		s = m;
	} else {
		sig.algor= &algor;
		sig.algor->algorithm=OBJ_nid2obj(type);
		if (sig.algor->algorithm == NULL)
			{
			RSAerr(RSA_F_RSA_SIGN,RSA_R_UNKNOWN_ALGORITHM_TYPE);
			return(0);
			}
		if (sig.algor->algorithm->length == 0)
			{
			RSAerr(RSA_F_RSA_SIGN,RSA_R_THE_ASN1_OBJECT_IDENTIFIER_IS_NOT_KNOWN_FOR_THIS_MD);
			return(0);
			}
		parameter.type=V_ASN1_NULL;
		parameter.value.ptr=NULL;
		sig.algor->parameter= &parameter;

		sig.digest= &digest;
		sig.digest->data=m;
		sig.digest->length=m_len;

		i=i2d_X509_SIG(&sig,NULL);
	}
	j=RSA_size(rsa);
	if ((i-RSA_PKCS1_PADDING) > j)
		{
		RSAerr(RSA_F_RSA_SIGN,RSA_R_DIGEST_TOO_BIG_FOR_RSA_KEY);
		return(0);
		}
	if(type != NID_md5_sha1) {
		s=(unsigned char *)Malloc((unsigned int)j+1);
		if (s == NULL)
			{
			RSAerr(RSA_F_RSA_SIGN,ERR_R_MALLOC_FAILURE);
			return(0);
			}
		p=s;
		i2d_X509_SIG(&sig,&p);
	}
	i=RSA_private_encrypt(i,s,sigret,rsa,RSA_PKCS1_PADDING);
	if (i <= 0)
		ret=0;
	else
		*siglen=i;

	if(type != NID_md5_sha1) {
		memset(s,0,(unsigned int)j+1);
		Free(s);
	}
	return(ret);
	}

int RSA_verify(int dtype, unsigned char *m, unsigned int m_len,
	     unsigned char *sigbuf, unsigned int siglen, RSA *rsa)
	{
	int i,ret=0,sigtype;
	unsigned char *p,*s;
	X509_SIG *sig=NULL;

	if (siglen != (unsigned int)RSA_size(rsa))
		{
		RSAerr(RSA_F_RSA_VERIFY,RSA_R_WRONG_SIGNATURE_LENGTH);
		return(0);
		}

	if(rsa->flags & RSA_FLAG_SIGN_VER)
	    return rsa->meth->rsa_verify(dtype, m, m_len, sigbuf, siglen, rsa);

	s=(unsigned char *)Malloc((unsigned int)siglen);
	if (s == NULL)
		{
		RSAerr(RSA_F_RSA_VERIFY,ERR_R_MALLOC_FAILURE);
		goto err;
		}
	if((dtype == NID_md5_sha1) && (m_len != SSL_SIG_LENGTH) ) {
			RSAerr(RSA_F_RSA_VERIFY,RSA_R_INVALID_MESSAGE_LENGTH);
			return(0);
	}
	i=RSA_public_decrypt((int)siglen,sigbuf,s,rsa,RSA_PKCS1_PADDING);

	if (i <= 0) goto err;

	/* Special case: SSL signature */
	if(dtype == NID_md5_sha1) {
		if((i != SSL_SIG_LENGTH) || memcmp(s, m, SSL_SIG_LENGTH))
				RSAerr(RSA_F_RSA_VERIFY,RSA_R_BAD_SIGNATURE);
		else ret = 1;
	} else {
		p=s;
		sig=d2i_X509_SIG(NULL,&p,(long)i);

		if (sig == NULL) goto err;
		sigtype=OBJ_obj2nid(sig->algor->algorithm);


	#ifdef RSA_DEBUG
		/* put a backward compatibility flag in EAY */
		fprintf(stderr,"in(%s) expect(%s)\n",OBJ_nid2ln(sigtype),
			OBJ_nid2ln(dtype));
	#endif
		if (sigtype != dtype)
			{
			if (((dtype == NID_md5) &&
				(sigtype == NID_md5WithRSAEncryption)) ||
				((dtype == NID_md2) &&
				(sigtype == NID_md2WithRSAEncryption)))
				{
				/* ok, we will let it through */
	#if !defined(NO_STDIO) && !defined(WIN16)
				fprintf(stderr,"signature has problems, re-make with post SSLeay045\n");
	#endif
				}
			else
				{
				RSAerr(RSA_F_RSA_VERIFY,
						RSA_R_ALGORITHM_MISMATCH);
				goto err;
				}
			}
		if (	((unsigned int)sig->digest->length != m_len) ||
			(memcmp(m,sig->digest->data,m_len) != 0))
			{
			RSAerr(RSA_F_RSA_VERIFY,RSA_R_BAD_SIGNATURE);
			}
		else
			ret=1;
	}
err:
	if (sig != NULL) X509_SIG_free(sig);
	memset(s,0,(unsigned int)siglen);
	Free(s);
	return(ret);
	}
Commit	Line	Data
b1ab9ed8	1	/*
d8f41ccd	2	* Copyright (c) 2000-2001,2011,2014 Apple Inc. All Rights Reserved.
b1ab9ed8 A	3	*
	4	* The contents of this file constitute Original Code as defined in and are
	5	* subject to the Apple Public Source License Version 1.2 (the 'License').
	6	* You may not use this file except in compliance with the License. Please obtain
	7	* a copy of the License at http://www.apple.com/publicsource and read it before
	8	* using this file.
	9	*
	10	* This Original Code and all software distributed under the License are
	11	* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS
	12	* OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, INCLUDING WITHOUT
	13	* LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
	14	* PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. Please see the License for the
	15	* specific language governing rights and limitations under the License.
	16	*/
	17
	18
	19	/* crypto/rsa/rsa_sign.c */
	20	/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
	21	* All rights reserved.
	22	*
	23	* This package is an SSL implementation written
	24	* by Eric Young (eay@cryptsoft.com).
	25	* The implementation was written so as to conform with Netscapes SSL.
	26	*
	27	* This library is free for commercial and non-commercial use as long as
	28	* the following conditions are aheared to. The following conditions
	29	* apply to all code found in this distribution, be it the RC4, RSA,
	30	* lhash, DES, etc., code; not just the SSL code. The SSL documentation
	31	* included with this distribution is covered by the same copyright terms
	32	* except that the holder is Tim Hudson (tjh@cryptsoft.com).
	33	*
	34	* Copyright remains Eric Young's, and as such any Copyright notices in
	35	* the code are not to be removed.
	36	* If this package is used in a product, Eric Young should be given attribution
	37	* as the author of the parts of the library used.
	38	* This can be in the form of a textual message at program startup or
	39	* in documentation (online or textual) provided with the package.
	40	*
	41	* Redistribution and use in source and binary forms, with or without
	42	* modification, are permitted provided that the following conditions
	43	* are met:
	44	* 1. Redistributions of source code must retain the copyright
	45	* notice, this list of conditions and the following disclaimer.
	46	* 2. Redistributions in binary form must reproduce the above copyright
	47	* notice, this list of conditions and the following disclaimer in the
	48	* documentation and/or other materials provided with the distribution.
	49	* 3. All advertising materials mentioning features or use of this software
	50	* must display the following acknowledgement:
	51	* "This product includes cryptographic software written by
	52	* Eric Young (eay@cryptsoft.com)"
	53	* The word 'cryptographic' can be left out if the rouines from the library
	54	* being used are not cryptographic related :-).
	55	* 4. If you include any Windows specific code (or a derivative thereof) from
	56	* the apps directory (application code) you must include an acknowledgement:
	57	* "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
	58	*
	59	* THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
	60	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	61	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	62	* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
	63	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	64	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	65	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	66	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
67	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
68	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
69	* SUCH DAMAGE.
70	*
71	* The licence and distribution terms for any publically available version or
72	* derivative of this code cannot be changed. i.e. this code cannot simply be
73	* copied and put under another distribution licence
74	* [including the GNU Public Licence.]
75	*/
76
77	#include <stdio.h>
78	#include "cryptlib.h"
79	#include <openssl/bn.h>
80	#include <openssl/rsa.h>
81	#include <openssl/objects.h>
82	#include <openssl/x509.h>
83
84	/* Size of an SSL signature: MD5+SHA1 */
85	#define SSL_SIG_LENGTH 36
86
87	int RSA_sign(int type, unsigned char *m, unsigned int m_len,
88	unsigned char sigret, unsigned int siglen, RSA *rsa)
89	{
90	X509_SIG sig;
91	ASN1_TYPE parameter;
92	int i,j,ret=1;
93	unsigned char p,s = NULL;
94	X509_ALGOR algor;
95	ASN1_OCTET_STRING digest;
96	if(rsa->flags & RSA_FLAG_SIGN_VER)
97	return rsa->meth->rsa_sign(type, m, m_len, sigret, siglen, rsa);
98	/* Special case: SSL signature, just check the length */
99	if(type == NID_md5_sha1) {
100	if(m_len != SSL_SIG_LENGTH) {
101	RSAerr(RSA_F_RSA_SIGN,RSA_R_INVALID_MESSAGE_LENGTH);
102	return(0);
103	}
104	i = SSL_SIG_LENGTH;
105	s = m;
106	} else {
107	sig.algor= &algor;
108	sig.algor->algorithm=OBJ_nid2obj(type);
109	if (sig.algor->algorithm == NULL)
110	{
111	RSAerr(RSA_F_RSA_SIGN,RSA_R_UNKNOWN_ALGORITHM_TYPE);
112	return(0);
113	}
114	if (sig.algor->algorithm->length == 0)
115	{
116	RSAerr(RSA_F_RSA_SIGN,RSA_R_THE_ASN1_OBJECT_IDENTIFIER_IS_NOT_KNOWN_FOR_THIS_MD);
117	return(0);
118	}
119	parameter.type=V_ASN1_NULL;
120	parameter.value.ptr=NULL;
121	sig.algor->parameter= &parameter;
122
123	sig.digest= &digest;
124	sig.digest->data=m;
125	sig.digest->length=m_len;
126
127	i=i2d_X509_SIG(&sig,NULL);
128	}
129	j=RSA_size(rsa);
130	if ((i-RSA_PKCS1_PADDING) > j)
131	{
132	RSAerr(RSA_F_RSA_SIGN,RSA_R_DIGEST_TOO_BIG_FOR_RSA_KEY);
133	return(0);
134	}
135	if(type != NID_md5_sha1) {
136	s=(unsigned char *)Malloc((unsigned int)j+1);
137	if (s == NULL)
138	{
139	RSAerr(RSA_F_RSA_SIGN,ERR_R_MALLOC_FAILURE);
140	return(0);
141	}
142	p=s;
143	i2d_X509_SIG(&sig,&p);
144	}
145	i=RSA_private_encrypt(i,s,sigret,rsa,RSA_PKCS1_PADDING);
146	if (i <= 0)
147	ret=0;
148	else
149	*siglen=i;
150
151	if(type != NID_md5_sha1) {
152	memset(s,0,(unsigned int)j+1);
153	Free(s);
154	}
155	return(ret);
156	}
157
158	int RSA_verify(int dtype, unsigned char *m, unsigned int m_len,
159	unsigned char sigbuf, unsigned int siglen, RSA rsa)
160	{
161	int i,ret=0,sigtype;
162	unsigned char p,s;
163	X509_SIG *sig=NULL;
164
165	if (siglen != (unsigned int)RSA_size(rsa))
166	{
167	RSAerr(RSA_F_RSA_VERIFY,RSA_R_WRONG_SIGNATURE_LENGTH);
168	return(0);
169	}
170
171	if(rsa->flags & RSA_FLAG_SIGN_VER)
172	return rsa->meth->rsa_verify(dtype, m, m_len, sigbuf, siglen, rsa);
173
174	s=(unsigned char *)Malloc((unsigned int)siglen);
175	if (s == NULL)
176	{
177	RSAerr(RSA_F_RSA_VERIFY,ERR_R_MALLOC_FAILURE);
178	goto err;
179	}
180	if((dtype == NID_md5_sha1) && (m_len != SSL_SIG_LENGTH) ) {
181	RSAerr(RSA_F_RSA_VERIFY,RSA_R_INVALID_MESSAGE_LENGTH);
182	return(0);
183	}
184	i=RSA_public_decrypt((int)siglen,sigbuf,s,rsa,RSA_PKCS1_PADDING);
185
186	if (i <= 0) goto err;
187
188	/* Special case: SSL signature */
189	if(dtype == NID_md5_sha1) {
190	if((i != SSL_SIG_LENGTH) \|\| memcmp(s, m, SSL_SIG_LENGTH))
191	RSAerr(RSA_F_RSA_VERIFY,RSA_R_BAD_SIGNATURE);
192	else ret = 1;
193	} else {
194	p=s;
195	sig=d2i_X509_SIG(NULL,&p,(long)i);
196
197	if (sig == NULL) goto err;
198	sigtype=OBJ_obj2nid(sig->algor->algorithm);
199
200
201	#ifdef RSA_DEBUG
202	/* put a backward compatibility flag in EAY */
203	fprintf(stderr,"in(%s) expect(%s)\n",OBJ_nid2ln(sigtype),
204	OBJ_nid2ln(dtype));
205	#endif
206	if (sigtype != dtype)
207	{
208	if (((dtype == NID_md5) &&
209	(sigtype == NID_md5WithRSAEncryption)) \|\|
210	((dtype == NID_md2) &&
211	(sigtype == NID_md2WithRSAEncryption)))
212	{
213	/* ok, we will let it through */
214	#if !defined(NO_STDIO) && !defined(WIN16)
215	fprintf(stderr,"signature has problems, re-make with post SSLeay045\n");
216	#endif
217	}
218	else
219	{
220	RSAerr(RSA_F_RSA_VERIFY,
221	RSA_R_ALGORITHM_MISMATCH);
222	goto err;
223	}
224	}
225	if ( ((unsigned int)sig->digest->length != m_len) \|\|
226	(memcmp(m,sig->digest->data,m_len) != 0))
227	{
228	RSAerr(RSA_F_RSA_VERIFY,RSA_R_BAD_SIGNATURE);
229	}
230	else
231	ret=1;
232	}
233	err:
234	if (sig != NULL) X509_SIG_free(sig);
235	memset(s,0,(unsigned int)siglen);
236	Free(s);
237	return(ret);
238	}
239