1
/* crypto/asn1/a_sign.c */
2
/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
5
* This package is an SSL implementation written
6
* by Eric Young (eay@cryptsoft.com).
7
* The implementation was written so as to conform with Netscapes SSL.
9
* This library is free for commercial and non-commercial use as long as
10
* the following conditions are aheared to. The following conditions
11
* apply to all code found in this distribution, be it the RC4, RSA,
12
* lhash, DES, etc., code; not just the SSL code. The SSL documentation
13
* included with this distribution is covered by the same copyright terms
14
* except that the holder is Tim Hudson (tjh@cryptsoft.com).
16
* Copyright remains Eric Young's, and as such any Copyright notices in
17
* the code are not to be removed.
18
* If this package is used in a product, Eric Young should be given attribution
19
* as the author of the parts of the library used.
20
* This can be in the form of a textual message at program startup or
21
* in documentation (online or textual) provided with the package.
23
* Redistribution and use in source and binary forms, with or without
24
* modification, are permitted provided that the following conditions
26
* 1. Redistributions of source code must retain the copyright
27
* notice, this list of conditions and the following disclaimer.
28
* 2. Redistributions in binary form must reproduce the above copyright
29
* notice, this list of conditions and the following disclaimer in the
30
* documentation and/or other materials provided with the distribution.
31
* 3. All advertising materials mentioning features or use of this software
32
* must display the following acknowledgement:
33
* "This product includes cryptographic software written by
34
* Eric Young (eay@cryptsoft.com)"
35
* The word 'cryptographic' can be left out if the rouines from the library
36
* being used are not cryptographic related :-).
37
* 4. If you include any Windows specific code (or a derivative thereof) from
38
* the apps directory (application code) you must include an acknowledgement:
39
* "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
41
* THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
42
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
43
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
44
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
45
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
46
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
47
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
49
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
50
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
53
* The licence and distribution terms for any publically available version or
54
* derivative of this code cannot be changed. i.e. this code cannot simply be
55
* copied and put under another distribution licence
56
* [including the GNU Public Licence.]
58
/* ====================================================================
59
* Copyright (c) 1998-2003 The OpenSSL Project. All rights reserved.
61
* Redistribution and use in source and binary forms, with or without
62
* modification, are permitted provided that the following conditions
65
* 1. Redistributions of source code must retain the above copyright
66
* notice, this list of conditions and the following disclaimer.
68
* 2. Redistributions in binary form must reproduce the above copyright
69
* notice, this list of conditions and the following disclaimer in
70
* the documentation and/or other materials provided with the
73
* 3. All advertising materials mentioning features or use of this
74
* software must display the following acknowledgment:
75
* "This product includes software developed by the OpenSSL Project
76
* for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
78
* 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
79
* endorse or promote products derived from this software without
80
* prior written permission. For written permission, please contact
81
* openssl-core@openssl.org.
83
* 5. Products derived from this software may not be called "OpenSSL"
84
* nor may "OpenSSL" appear in their names without prior written
85
* permission of the OpenSSL Project.
87
* 6. Redistributions of any form whatsoever must retain the following
89
* "This product includes software developed by the OpenSSL Project
90
* for use in the OpenSSL Toolkit (http://www.openssl.org/)"
92
* THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
93
* EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
94
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
95
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
96
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
97
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
98
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
99
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
100
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
101
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
102
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
103
* OF THE POSSIBILITY OF SUCH DAMAGE.
104
* ====================================================================
106
* This product includes cryptographic software written by Eric Young
107
* (eay@cryptsoft.com). This product includes software written by Tim
108
* Hudson (tjh@cryptsoft.com).
115
#include "cryptlib.h"
117
#ifndef NO_SYS_TYPES_H
118
# include <sys/types.h>
121
#include <openssl/bn.h>
122
#include <openssl/evp.h>
123
#include <openssl/x509.h>
124
#include <openssl/objects.h>
125
#include <openssl/buffer.h>
129
int ASN1_sign(i2d_of_void *i2d, X509_ALGOR *algor1, X509_ALGOR *algor2,
130
ASN1_BIT_STRING *signature, char *data, EVP_PKEY *pkey,
134
unsigned char *p,*buf_in=NULL,*buf_out=NULL;
135
int i,inl=0,outl=0,outll=0;
138
EVP_MD_CTX_init(&ctx);
145
if (a == NULL) continue;
146
if (type->pkey_type == NID_dsaWithSHA1)
148
/* special case: RFC 2459 tells us to omit 'parameters'
149
* with id-dsa-with-sha1 */
150
ASN1_TYPE_free(a->parameter);
153
else if ((a->parameter == NULL) ||
154
(a->parameter->type != V_ASN1_NULL))
156
ASN1_TYPE_free(a->parameter);
157
if ((a->parameter=ASN1_TYPE_new()) == NULL) goto err;
158
a->parameter->type=V_ASN1_NULL;
160
ASN1_OBJECT_free(a->algorithm);
161
a->algorithm=OBJ_nid2obj(type->pkey_type);
162
if (a->algorithm == NULL)
164
ASN1err(ASN1_F_ASN1_SIGN,ASN1_R_UNKNOWN_OBJECT_TYPE);
167
if (a->algorithm->length == 0)
169
ASN1err(ASN1_F_ASN1_SIGN,ASN1_R_THE_ASN1_OBJECT_IDENTIFIER_IS_NOT_KNOWN_FOR_THIS_MD);
174
buf_in=(unsigned char *)OPENSSL_malloc((unsigned int)inl);
175
outll=outl=EVP_PKEY_size(pkey);
176
buf_out=(unsigned char *)OPENSSL_malloc((unsigned int)outl);
177
if ((buf_in == NULL) || (buf_out == NULL))
180
ASN1err(ASN1_F_ASN1_SIGN,ERR_R_MALLOC_FAILURE);
186
EVP_SignInit_ex(&ctx,type, NULL);
187
EVP_SignUpdate(&ctx,(unsigned char *)buf_in,inl);
188
if (!EVP_SignFinal(&ctx,(unsigned char *)buf_out,
189
(unsigned int *)&outl,pkey))
192
ASN1err(ASN1_F_ASN1_SIGN,ERR_R_EVP_LIB);
195
if (signature->data != NULL) OPENSSL_free(signature->data);
196
signature->data=buf_out;
198
signature->length=outl;
199
/* In the interests of compatibility, I'll make sure that
200
* the bit string has a 'not-used bits' value of 0
202
signature->flags&= ~(ASN1_STRING_FLAG_BITS_LEFT|0x07);
203
signature->flags|=ASN1_STRING_FLAG_BITS_LEFT;
205
EVP_MD_CTX_cleanup(&ctx);
207
{ OPENSSL_cleanse((char *)buf_in,(unsigned int)inl); OPENSSL_free(buf_in); }
209
{ OPENSSL_cleanse((char *)buf_out,outll); OPENSSL_free(buf_out); }
215
int ASN1_item_sign(const ASN1_ITEM *it, X509_ALGOR *algor1, X509_ALGOR *algor2,
216
ASN1_BIT_STRING *signature, void *asn, EVP_PKEY *pkey,
220
unsigned char *buf_in=NULL,*buf_out=NULL;
221
int i,inl=0,outl=0,outll=0;
224
EVP_MD_CTX_init(&ctx);
231
if (a == NULL) continue;
232
if (type->pkey_type == NID_dsaWithSHA1 ||
233
type->pkey_type == NID_ecdsa_with_SHA1)
235
/* special case: RFC 3279 tells us to omit 'parameters'
236
* with id-dsa-with-sha1 and ecdsa-with-SHA1 */
237
ASN1_TYPE_free(a->parameter);
240
else if ((a->parameter == NULL) ||
241
(a->parameter->type != V_ASN1_NULL))
243
ASN1_TYPE_free(a->parameter);
244
if ((a->parameter=ASN1_TYPE_new()) == NULL) goto err;
245
a->parameter->type=V_ASN1_NULL;
247
ASN1_OBJECT_free(a->algorithm);
248
a->algorithm=OBJ_nid2obj(type->pkey_type);
249
if (a->algorithm == NULL)
251
ASN1err(ASN1_F_ASN1_ITEM_SIGN,ASN1_R_UNKNOWN_OBJECT_TYPE);
254
if (a->algorithm->length == 0)
256
ASN1err(ASN1_F_ASN1_ITEM_SIGN,ASN1_R_THE_ASN1_OBJECT_IDENTIFIER_IS_NOT_KNOWN_FOR_THIS_MD);
260
inl=ASN1_item_i2d(asn,&buf_in, it);
261
outll=outl=EVP_PKEY_size(pkey);
262
buf_out=(unsigned char *)OPENSSL_malloc((unsigned int)outl);
263
if ((buf_in == NULL) || (buf_out == NULL))
266
ASN1err(ASN1_F_ASN1_ITEM_SIGN,ERR_R_MALLOC_FAILURE);
270
if (!EVP_SignInit_ex(&ctx,type, NULL))
273
ASN1err(ASN1_F_ASN1_ITEM_SIGN,ERR_R_EVP_LIB);
276
EVP_SignUpdate(&ctx,(unsigned char *)buf_in,inl);
277
if (!EVP_SignFinal(&ctx,(unsigned char *)buf_out,
278
(unsigned int *)&outl,pkey))
281
ASN1err(ASN1_F_ASN1_ITEM_SIGN,ERR_R_EVP_LIB);
284
if (signature->data != NULL) OPENSSL_free(signature->data);
285
signature->data=buf_out;
287
signature->length=outl;
288
/* In the interests of compatibility, I'll make sure that
289
* the bit string has a 'not-used bits' value of 0
291
signature->flags&= ~(ASN1_STRING_FLAG_BITS_LEFT|0x07);
292
signature->flags|=ASN1_STRING_FLAG_BITS_LEFT;
294
EVP_MD_CTX_cleanup(&ctx);
296
{ OPENSSL_cleanse((char *)buf_in,(unsigned int)inl); OPENSSL_free(buf_in); }
298
{ OPENSSL_cleanse((char *)buf_out,outll); OPENSSL_free(buf_out); }
added
removed
crypto/asn1/a_sign.c
