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Side by Side Diff: openssl/crypto/dsa/dsa_asn1.c

Issue 9254031: Upgrade chrome's OpenSSL to same version Android ships with. (Closed) Base URL: http://src.chromium.org/svn/trunk/deps/third_party/openssl/
Patch Set: '' Created 8 years, 11 months ago
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1 /* dsa_asn1.c */ 1 /* dsa_asn1.c */
2 /* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL 2 /* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
3 * project 2000. 3 * project 2000.
4 */ 4 */
5 /* ==================================================================== 5 /* ====================================================================
6 * Copyright (c) 2000 The OpenSSL Project. All rights reserved. 6 * Copyright (c) 2000-2005 The OpenSSL Project. All rights reserved.
7 * 7 *
8 * Redistribution and use in source and binary forms, with or without 8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions 9 * modification, are permitted provided that the following conditions
10 * are met: 10 * are met:
11 * 11 *
12 * 1. Redistributions of source code must retain the above copyright 12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer. 13 * notice, this list of conditions and the following disclaimer.
14 * 14 *
15 * 2. Redistributions in binary form must reproduce the above copyright 15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in 16 * notice, this list of conditions and the following disclaimer in
(...skipping 37 matching lines...) Expand 10 before | Expand all | Expand 10 after
54 * (eay@cryptsoft.com). This product includes software written by Tim 54 * (eay@cryptsoft.com). This product includes software written by Tim
55 * Hudson (tjh@cryptsoft.com). 55 * Hudson (tjh@cryptsoft.com).
56 * 56 *
57 */ 57 */
58 58
59 #include <stdio.h> 59 #include <stdio.h>
60 #include "cryptlib.h" 60 #include "cryptlib.h"
61 #include <openssl/dsa.h> 61 #include <openssl/dsa.h>
62 #include <openssl/asn1.h> 62 #include <openssl/asn1.h>
63 #include <openssl/asn1t.h> 63 #include <openssl/asn1t.h>
64 #include <openssl/bn.h>
65 #include <openssl/rand.h>
66 #ifdef OPENSSL_FIPS
67 #include <openssl/fips.h>
68 #endif
69
70 64
71 /* Override the default new methods */ 65 /* Override the default new methods */
72 static int sig_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it) 66 static int sig_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it,
67 » » » » » » » » void *exarg)
73 { 68 {
74 if(operation == ASN1_OP_NEW_PRE) { 69 if(operation == ASN1_OP_NEW_PRE) {
75 DSA_SIG *sig; 70 DSA_SIG *sig;
76 sig = OPENSSL_malloc(sizeof(DSA_SIG)); 71 sig = OPENSSL_malloc(sizeof(DSA_SIG));
72 if (!sig)
73 {
74 DSAerr(DSA_F_SIG_CB, ERR_R_MALLOC_FAILURE);
75 return 0;
76 }
77 sig->r = NULL; 77 sig->r = NULL;
78 sig->s = NULL; 78 sig->s = NULL;
79 *pval = (ASN1_VALUE *)sig; 79 *pval = (ASN1_VALUE *)sig;
80 » » if(sig) return 2; 80 » » return 2;
81 » » DSAerr(DSA_F_SIG_CB, ERR_R_MALLOC_FAILURE);
82 » » return 0;
83 } 81 }
84 return 1; 82 return 1;
85 } 83 }
86 84
87 ASN1_SEQUENCE_cb(DSA_SIG, sig_cb) = { 85 ASN1_SEQUENCE_cb(DSA_SIG, sig_cb) = {
88 ASN1_SIMPLE(DSA_SIG, r, CBIGNUM), 86 ASN1_SIMPLE(DSA_SIG, r, CBIGNUM),
89 ASN1_SIMPLE(DSA_SIG, s, CBIGNUM) 87 ASN1_SIMPLE(DSA_SIG, s, CBIGNUM)
90 } ASN1_SEQUENCE_END_cb(DSA_SIG, DSA_SIG) 88 } ASN1_SEQUENCE_END_cb(DSA_SIG, DSA_SIG)
91 89
92 IMPLEMENT_ASN1_ENCODE_FUNCTIONS_const_fname(DSA_SIG,DSA_SIG,DSA_SIG) 90 IMPLEMENT_ASN1_FUNCTIONS_const(DSA_SIG)
93 91
94 /* Override the default free and new methods */ 92 /* Override the default free and new methods */
95 static int dsa_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it) 93 static int dsa_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it,
94 » » » » » » » void *exarg)
96 { 95 {
97 if(operation == ASN1_OP_NEW_PRE) { 96 if(operation == ASN1_OP_NEW_PRE) {
98 *pval = (ASN1_VALUE *)DSA_new(); 97 *pval = (ASN1_VALUE *)DSA_new();
99 if(*pval) return 2; 98 if(*pval) return 2;
100 return 0; 99 return 0;
101 } else if(operation == ASN1_OP_FREE_PRE) { 100 } else if(operation == ASN1_OP_FREE_PRE) {
102 DSA_free((DSA *)*pval); 101 DSA_free((DSA *)*pval);
103 *pval = NULL; 102 *pval = NULL;
104 return 2; 103 return 2;
105 } 104 }
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138 ASN1_SIMPLE(DSA, g, BIGNUM) 137 ASN1_SIMPLE(DSA, g, BIGNUM)
139 } ASN1_SEQUENCE_END_name(DSA, dsa_pub_internal) 138 } ASN1_SEQUENCE_END_name(DSA, dsa_pub_internal)
140 139
141 ASN1_CHOICE_cb(DSAPublicKey, dsa_cb) = { 140 ASN1_CHOICE_cb(DSAPublicKey, dsa_cb) = {
142 ASN1_SIMPLE(DSA, pub_key, BIGNUM), 141 ASN1_SIMPLE(DSA, pub_key, BIGNUM),
143 ASN1_EX_COMBINE(0, 0, dsa_pub_internal) 142 ASN1_EX_COMBINE(0, 0, dsa_pub_internal)
144 } ASN1_CHOICE_END_cb(DSA, DSAPublicKey, write_params) 143 } ASN1_CHOICE_END_cb(DSA, DSAPublicKey, write_params)
145 144
146 IMPLEMENT_ASN1_ENCODE_FUNCTIONS_const_fname(DSA, DSAPublicKey, DSAPublicKey) 145 IMPLEMENT_ASN1_ENCODE_FUNCTIONS_const_fname(DSA, DSAPublicKey, DSAPublicKey)
147 146
148 int DSA_sign(int type, const unsigned char *dgst, int dlen, unsigned char *sig, 147 DSA *DSAparams_dup(DSA *dsa)
149 » unsigned int *siglen, DSA *dsa)
150 { 148 {
151 » DSA_SIG *s; 149 » return ASN1_item_dup(ASN1_ITEM_rptr(DSAparams), dsa);
152 #ifdef OPENSSL_FIPS
153 » if(FIPS_mode() && !(dsa->flags & DSA_FLAG_NON_FIPS_ALLOW))
154 » » {
155 » » DSAerr(DSA_F_DSA_SIGN, DSA_R_OPERATION_NOT_ALLOWED_IN_FIPS_MODE) ;
156 » » return 0;
157 » » }
158 #endif
159 » RAND_seed(dgst, dlen);
160 » s=DSA_do_sign(dgst,dlen,dsa);
161 » if (s == NULL)
162 » » {
163 » » *siglen=0;
164 » » return(0);
165 » » }
166 » *siglen=i2d_DSA_SIG(s,&sig);
167 » DSA_SIG_free(s);
168 » return(1);
169 } 150 }
170
171 int DSA_size(const DSA *r)
172 {
173 int ret,i;
174 ASN1_INTEGER bs;
175 unsigned char buf[4]; /* 4 bytes looks really small.
176 However, i2d_ASN1_INTEGER() will not look
177 beyond the first byte, as long as the second
178 parameter is NULL. */
179
180 i=BN_num_bits(r->q);
181 bs.length=(i+7)/8;
182 bs.data=buf;
183 bs.type=V_ASN1_INTEGER;
184 /* If the top bit is set the asn1 encoding is 1 larger. */
185 buf[0]=0xff;
186
187 i=i2d_ASN1_INTEGER(&bs,NULL);
188 i+=i; /* r and s */
189 ret=ASN1_object_size(1,i,V_ASN1_SEQUENCE);
190 return(ret);
191 }
192
193 /* data has already been hashed (probably with SHA or SHA-1). */
194 /* returns
195 * 1: correct signature
196 * 0: incorrect signature
197 * -1: error
198 */
199 int DSA_verify(int type, const unsigned char *dgst, int dgst_len,
200 const unsigned char *sigbuf, int siglen, DSA *dsa)
201 {
202 DSA_SIG *s;
203 int ret=-1;
204 #ifdef OPENSSL_FIPS
205 if(FIPS_mode() && !(dsa->flags & DSA_FLAG_NON_FIPS_ALLOW))
206 {
207 DSAerr(DSA_F_DSA_VERIFY, DSA_R_OPERATION_NOT_ALLOWED_IN_FIPS_MOD E);
208 return 0;
209 }
210 #endif
211
212 s = DSA_SIG_new();
213 if (s == NULL) return(ret);
214 if (d2i_DSA_SIG(&s,&sigbuf,siglen) == NULL) goto err;
215 ret=DSA_do_verify(dgst,dgst_len,s,dsa);
216 err:
217 DSA_SIG_free(s);
218 return(ret);
219 }
220
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