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-rw-r--r--src/lib/libcrypto/dsa/dsa_asn1.c200
1 files changed, 122 insertions, 78 deletions
diff --git a/src/lib/libcrypto/dsa/dsa_asn1.c b/src/lib/libcrypto/dsa/dsa_asn1.c
index a76c8f7c7e..23fce555aa 100644
--- a/src/lib/libcrypto/dsa/dsa_asn1.c
+++ b/src/lib/libcrypto/dsa/dsa_asn1.c
@@ -1,96 +1,140 @@
1/* crypto/dsa/dsa_asn1.c */ 1/* dsa_asn1.c */
2/* Written by Dr Stephen N Henson (shenson@bigfoot.com) for the OpenSSL
3 * project 2000.
4 */
5/* ====================================================================
6 * Copyright (c) 2000 The OpenSSL Project. All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 *
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 *
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in
17 * the documentation and/or other materials provided with the
18 * distribution.
19 *
20 * 3. All advertising materials mentioning features or use of this
21 * software must display the following acknowledgment:
22 * "This product includes software developed by the OpenSSL Project
23 * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
24 *
25 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
26 * endorse or promote products derived from this software without
27 * prior written permission. For written permission, please contact
28 * licensing@OpenSSL.org.
29 *
30 * 5. Products derived from this software may not be called "OpenSSL"
31 * nor may "OpenSSL" appear in their names without prior written
32 * permission of the OpenSSL Project.
33 *
34 * 6. Redistributions of any form whatsoever must retain the following
35 * acknowledgment:
36 * "This product includes software developed by the OpenSSL Project
37 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
38 *
39 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
40 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
41 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
42 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
43 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
44 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
45 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
46 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
47 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
48 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
49 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
50 * OF THE POSSIBILITY OF SUCH DAMAGE.
51 * ====================================================================
52 *
53 * This product includes cryptographic software written by Eric Young
54 * (eay@cryptsoft.com). This product includes software written by Tim
55 * Hudson (tjh@cryptsoft.com).
56 *
57 */
2 58
3#include <stdio.h> 59#include <stdio.h>
4#include "cryptlib.h" 60#include "cryptlib.h"
5#include <openssl/dsa.h> 61#include <openssl/dsa.h>
6#include <openssl/asn1.h> 62#include <openssl/asn1.h>
7#include <openssl/asn1_mac.h> 63#include <openssl/asn1t.h>
8 64
9DSA_SIG *DSA_SIG_new(void) 65/* Override the default new methods */
66static int sig_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it)
10{ 67{
11 DSA_SIG *ret; 68 if(operation == ASN1_OP_NEW_PRE) {
12 69 DSA_SIG *sig;
13 ret = OPENSSL_malloc(sizeof(DSA_SIG)); 70 sig = OPENSSL_malloc(sizeof(DSA_SIG));
14 if (ret == NULL) 71 sig->r = NULL;
15 { 72 sig->s = NULL;
16 DSAerr(DSA_F_DSA_SIG_NEW,ERR_R_MALLOC_FAILURE); 73 *pval = (ASN1_VALUE *)sig;
17 return(NULL); 74 if(sig) return 2;
18 } 75 DSAerr(DSA_F_SIG_CB, ERR_R_MALLOC_FAILURE);
19 ret->r = NULL; 76 return 0;
20 ret->s = NULL; 77 }
21 return(ret); 78 return 1;
22} 79}
23 80
24void DSA_SIG_free(DSA_SIG *r) 81ASN1_SEQUENCE_cb(DSA_SIG, sig_cb) = {
82 ASN1_SIMPLE(DSA_SIG, r, CBIGNUM),
83 ASN1_SIMPLE(DSA_SIG, s, CBIGNUM)
84} ASN1_SEQUENCE_END_cb(DSA_SIG, DSA_SIG)
85
86IMPLEMENT_ASN1_FUNCTIONS_const(DSA_SIG)
87
88/* Override the default free and new methods */
89static int dsa_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it)
25{ 90{
26 if (r == NULL) return; 91 if(operation == ASN1_OP_NEW_PRE) {
27 if (r->r) BN_clear_free(r->r); 92 *pval = (ASN1_VALUE *)DSA_new();
28 if (r->s) BN_clear_free(r->s); 93 if(*pval) return 2;
29 OPENSSL_free(r); 94 return 0;
95 } else if(operation == ASN1_OP_FREE_PRE) {
96 DSA_free((DSA *)*pval);
97 *pval = NULL;
98 return 2;
99 }
100 return 1;
30} 101}
31 102
32int i2d_DSA_SIG(DSA_SIG *v, unsigned char **pp) 103ASN1_SEQUENCE_cb(DSAPrivateKey, dsa_cb) = {
33{ 104 ASN1_SIMPLE(DSA, version, LONG),
34 int t=0,len; 105 ASN1_SIMPLE(DSA, p, BIGNUM),
35 ASN1_INTEGER rbs,sbs; 106 ASN1_SIMPLE(DSA, q, BIGNUM),
36 unsigned char *p; 107 ASN1_SIMPLE(DSA, g, BIGNUM),
108 ASN1_SIMPLE(DSA, pub_key, BIGNUM),
109 ASN1_SIMPLE(DSA, priv_key, BIGNUM)
110} ASN1_SEQUENCE_END_cb(DSA, DSAPrivateKey)
37 111
38 rbs.data=OPENSSL_malloc(BN_num_bits(v->r)/8+1); 112IMPLEMENT_ASN1_ENCODE_FUNCTIONS_const_fname(DSA, DSAPrivateKey, DSAPrivateKey)
39 if (rbs.data == NULL)
40 {
41 DSAerr(DSA_F_I2D_DSA_SIG, ERR_R_MALLOC_FAILURE);
42 return(0);
43 }
44 rbs.type=V_ASN1_INTEGER;
45 rbs.length=BN_bn2bin(v->r,rbs.data);
46 sbs.data=OPENSSL_malloc(BN_num_bits(v->s)/8+1);
47 if (sbs.data == NULL)
48 {
49 OPENSSL_free(rbs.data);
50 DSAerr(DSA_F_I2D_DSA_SIG, ERR_R_MALLOC_FAILURE);
51 return(0);
52 }
53 sbs.type=V_ASN1_INTEGER;
54 sbs.length=BN_bn2bin(v->s,sbs.data);
55 113
56 len=i2d_ASN1_INTEGER(&rbs,NULL); 114ASN1_SEQUENCE_cb(DSAparams, dsa_cb) = {
57 len+=i2d_ASN1_INTEGER(&sbs,NULL); 115 ASN1_SIMPLE(DSA, p, BIGNUM),
116 ASN1_SIMPLE(DSA, q, BIGNUM),
117 ASN1_SIMPLE(DSA, g, BIGNUM),
118} ASN1_SEQUENCE_END_cb(DSA, DSAparams)
58 119
59 if (pp) 120IMPLEMENT_ASN1_ENCODE_FUNCTIONS_const_fname(DSA, DSAparams, DSAparams)
60 {
61 p=*pp;
62 ASN1_put_object(&p,1,len,V_ASN1_SEQUENCE,V_ASN1_UNIVERSAL);
63 i2d_ASN1_INTEGER(&rbs,&p);
64 i2d_ASN1_INTEGER(&sbs,&p);
65 }
66 t=ASN1_object_size(1,len,V_ASN1_SEQUENCE);
67 OPENSSL_free(rbs.data);
68 OPENSSL_free(sbs.data);
69 return(t);
70}
71 121
72DSA_SIG *d2i_DSA_SIG(DSA_SIG **a, unsigned char **pp, long length) 122/* DSA public key is a bit trickier... its effectively a CHOICE type
73{ 123 * decided by a field called write_params which can either write out
74 int i=ERR_R_NESTED_ASN1_ERROR; 124 * just the public key as an INTEGER or the parameters and public key
75 ASN1_INTEGER *bs=NULL; 125 * in a SEQUENCE
76 M_ASN1_D2I_vars(a,DSA_SIG *,DSA_SIG_new); 126 */
77 127
78 M_ASN1_D2I_Init(); 128ASN1_SEQUENCE(dsa_pub_internal) = {
79 M_ASN1_D2I_start_sequence(); 129 ASN1_SIMPLE(DSA, pub_key, BIGNUM),
80 M_ASN1_D2I_get(bs,d2i_ASN1_INTEGER); 130 ASN1_SIMPLE(DSA, p, BIGNUM),
81 if ((ret->r=BN_bin2bn(bs->data,bs->length,ret->r)) == NULL) 131 ASN1_SIMPLE(DSA, q, BIGNUM),
82 goto err_bn; 132 ASN1_SIMPLE(DSA, g, BIGNUM)
83 M_ASN1_D2I_get(bs,d2i_ASN1_INTEGER); 133} ASN1_SEQUENCE_END_name(DSA, dsa_pub_internal)
84 if ((ret->s=BN_bin2bn(bs->data,bs->length,ret->s)) == NULL)
85 goto err_bn;
86 M_ASN1_BIT_STRING_free(bs);
87 M_ASN1_D2I_Finish_2(a);
88 134
89err_bn: 135ASN1_CHOICE_cb(DSAPublicKey, dsa_cb) = {
90 i=ERR_R_BN_LIB; 136 ASN1_SIMPLE(DSA, pub_key, BIGNUM),
91err: 137 ASN1_EX_COMBINE(0, 0, dsa_pub_internal)
92 DSAerr(DSA_F_D2I_DSA_SIG,i); 138} ASN1_CHOICE_END_cb(DSA, DSAPublicKey, write_params)
93 if ((ret != NULL) && ((a == NULL) || (*a != ret))) DSA_SIG_free(ret); 139
94 if (bs != NULL) M_ASN1_BIT_STRING_free(bs); 140IMPLEMENT_ASN1_ENCODE_FUNCTIONS_const_fname(DSA, DSAPublicKey, DSAPublicKey)
95 return(NULL);
96}
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