Add NO_ASN1_OLD to remove some old style functions:
[openssl.git] / crypto / asn1 / a_sign.c
1 /* crypto/asn1/a_sign.c */
2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
3  * All rights reserved.
4  *
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.
8  * 
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).
15  * 
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.
22  * 
23  * Redistribution and use in source and binary forms, with or without
24  * modification, are permitted provided that the following conditions
25  * are met:
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)"
40  * 
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
51  * SUCH DAMAGE.
52  * 
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.]
57  */
58
59 #include <stdio.h>
60 #include <time.h>
61
62 #include "cryptlib.h"
63
64 #ifndef NO_SYS_TYPES_H
65 # include <sys/types.h>
66 #endif
67
68 #include <openssl/bn.h>
69 #include <openssl/evp.h>
70 #include <openssl/x509.h>
71 #include <openssl/objects.h>
72 #include <openssl/buffer.h>
73
74 #ifndef NO_ASN1_OLD
75
76 int ASN1_sign(int (*i2d)(), X509_ALGOR *algor1, X509_ALGOR *algor2,
77              ASN1_BIT_STRING *signature, char *data, EVP_PKEY *pkey,
78              const EVP_MD *type)
79         {
80         EVP_MD_CTX ctx;
81         unsigned char *p,*buf_in=NULL,*buf_out=NULL;
82         int i,inl=0,outl=0,outll=0;
83         X509_ALGOR *a;
84
85         for (i=0; i<2; i++)
86                 {
87                 if (i == 0)
88                         a=algor1;
89                 else
90                         a=algor2;
91                 if (a == NULL) continue;
92                 if (    (a->parameter == NULL) || 
93                         (a->parameter->type != V_ASN1_NULL))
94                         {
95                         ASN1_TYPE_free(a->parameter);
96                         if ((a->parameter=ASN1_TYPE_new()) == NULL) goto err;
97                         a->parameter->type=V_ASN1_NULL;
98                         }
99                 ASN1_OBJECT_free(a->algorithm);
100                 a->algorithm=OBJ_nid2obj(type->pkey_type);
101                 if (a->algorithm == NULL)
102                         {
103                         ASN1err(ASN1_F_ASN1_SIGN,ASN1_R_UNKNOWN_OBJECT_TYPE);
104                         goto err;
105                         }
106                 if (a->algorithm->length == 0)
107                         {
108                         ASN1err(ASN1_F_ASN1_SIGN,ASN1_R_THE_ASN1_OBJECT_IDENTIFIER_IS_NOT_KNOWN_FOR_THIS_MD);
109                         goto err;
110                         }
111                 }
112         inl=i2d(data,NULL);
113         buf_in=(unsigned char *)OPENSSL_malloc((unsigned int)inl);
114         outll=outl=EVP_PKEY_size(pkey);
115         buf_out=(unsigned char *)OPENSSL_malloc((unsigned int)outl);
116         if ((buf_in == NULL) || (buf_out == NULL))
117                 {
118                 outl=0;
119                 ASN1err(ASN1_F_ASN1_SIGN,ERR_R_MALLOC_FAILURE);
120                 goto err;
121                 }
122         p=buf_in;
123
124         i2d(data,&p);
125         EVP_SignInit(&ctx,type);
126         EVP_SignUpdate(&ctx,(unsigned char *)buf_in,inl);
127         if (!EVP_SignFinal(&ctx,(unsigned char *)buf_out,
128                         (unsigned int *)&outl,pkey))
129                 {
130                 outl=0;
131                 ASN1err(ASN1_F_ASN1_SIGN,ERR_R_EVP_LIB);
132                 goto err;
133                 }
134         if (signature->data != NULL) OPENSSL_free(signature->data);
135         signature->data=buf_out;
136         buf_out=NULL;
137         signature->length=outl;
138         /* In the interests of compatibility, I'll make sure that
139          * the bit string has a 'not-used bits' value of 0
140          */
141         signature->flags&= ~(ASN1_STRING_FLAG_BITS_LEFT|0x07);
142         signature->flags|=ASN1_STRING_FLAG_BITS_LEFT;
143 err:
144         memset(&ctx,0,sizeof(ctx));
145         if (buf_in != NULL)
146                 { memset((char *)buf_in,0,(unsigned int)inl); OPENSSL_free(buf_in); }
147         if (buf_out != NULL)
148                 { memset((char *)buf_out,0,outll); OPENSSL_free(buf_out); }
149         return(outl);
150         }
151
152 #endif
153
154 int ASN1_item_sign(const ASN1_ITEM *it, X509_ALGOR *algor1, X509_ALGOR *algor2,
155              ASN1_BIT_STRING *signature, void *asn, EVP_PKEY *pkey,
156              const EVP_MD *type)
157         {
158         EVP_MD_CTX ctx;
159         unsigned char *buf_in=NULL,*buf_out=NULL;
160         int i,inl=0,outl=0,outll=0;
161         X509_ALGOR *a;
162
163         for (i=0; i<2; i++)
164                 {
165                 if (i == 0)
166                         a=algor1;
167                 else
168                         a=algor2;
169                 if (a == NULL) continue;
170                 if (    (a->parameter == NULL) || 
171                         (a->parameter->type != V_ASN1_NULL))
172                         {
173                         ASN1_TYPE_free(a->parameter);
174                         if ((a->parameter=ASN1_TYPE_new()) == NULL) goto err;
175                         a->parameter->type=V_ASN1_NULL;
176                         }
177                 ASN1_OBJECT_free(a->algorithm);
178                 a->algorithm=OBJ_nid2obj(type->pkey_type);
179                 if (a->algorithm == NULL)
180                         {
181                         ASN1err(ASN1_F_ASN1_SIGN,ASN1_R_UNKNOWN_OBJECT_TYPE);
182                         goto err;
183                         }
184                 if (a->algorithm->length == 0)
185                         {
186                         ASN1err(ASN1_F_ASN1_SIGN,ASN1_R_THE_ASN1_OBJECT_IDENTIFIER_IS_NOT_KNOWN_FOR_THIS_MD);
187                         goto err;
188                         }
189                 }
190         inl=ASN1_item_i2d(asn,&buf_in, it);
191         outll=outl=EVP_PKEY_size(pkey);
192         buf_out=(unsigned char *)OPENSSL_malloc((unsigned int)outl);
193         if ((buf_in == NULL) || (buf_out == NULL))
194                 {
195                 outl=0;
196                 ASN1err(ASN1_F_ASN1_SIGN,ERR_R_MALLOC_FAILURE);
197                 goto err;
198                 }
199
200         EVP_SignInit(&ctx,type);
201         EVP_SignUpdate(&ctx,(unsigned char *)buf_in,inl);
202         if (!EVP_SignFinal(&ctx,(unsigned char *)buf_out,
203                         (unsigned int *)&outl,pkey))
204                 {
205                 outl=0;
206                 ASN1err(ASN1_F_ASN1_SIGN,ERR_R_EVP_LIB);
207                 goto err;
208                 }
209         if (signature->data != NULL) OPENSSL_free(signature->data);
210         signature->data=buf_out;
211         buf_out=NULL;
212         signature->length=outl;
213         /* In the interests of compatibility, I'll make sure that
214          * the bit string has a 'not-used bits' value of 0
215          */
216         signature->flags&= ~(ASN1_STRING_FLAG_BITS_LEFT|0x07);
217         signature->flags|=ASN1_STRING_FLAG_BITS_LEFT;
218 err:
219         memset(&ctx,0,sizeof(ctx));
220         if (buf_in != NULL)
221                 { memset((char *)buf_in,0,(unsigned int)inl); OPENSSL_free(buf_in); }
222         if (buf_out != NULL)
223                 { memset((char *)buf_out,0,outll); OPENSSL_free(buf_out); }
224         return(outl);
225         }