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| 1 /* crypto/asn1/a_verify.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 #include "asn1_locl.h" | |
| 64 | |
| 65 #ifndef NO_SYS_TYPES_H | |
| 66 # include <sys/types.h> | |
| 67 #endif | |
| 68 | |
| 69 #include <openssl/bn.h> | |
| 70 #include <openssl/x509.h> | |
| 71 #include <openssl/objects.h> | |
| 72 #include <openssl/buffer.h> | |
| 73 #include <openssl/evp.h> | |
| 74 | |
| 75 #ifndef NO_ASN1_OLD | |
| 76 | |
| 77 int ASN1_verify(i2d_of_void *i2d, X509_ALGOR *a, ASN1_BIT_STRING *signature, | |
| 78 char *data, EVP_PKEY *pkey) | |
| 79 { | |
| 80 EVP_MD_CTX ctx; | |
| 81 const EVP_MD *type; | |
| 82 unsigned char *p,*buf_in=NULL; | |
| 83 int ret= -1,i,inl; | |
| 84 | |
| 85 EVP_MD_CTX_init(&ctx); | |
| 86 i=OBJ_obj2nid(a->algorithm); | |
| 87 type=EVP_get_digestbyname(OBJ_nid2sn(i)); | |
| 88 if (type == NULL) | |
| 89 { | |
| 90 ASN1err(ASN1_F_ASN1_VERIFY,ASN1_R_UNKNOWN_MESSAGE_DIGEST_ALGORIT
HM); | |
| 91 goto err; | |
| 92 } | |
| 93 | |
| 94 inl=i2d(data,NULL); | |
| 95 buf_in=OPENSSL_malloc((unsigned int)inl); | |
| 96 if (buf_in == NULL) | |
| 97 { | |
| 98 ASN1err(ASN1_F_ASN1_VERIFY,ERR_R_MALLOC_FAILURE); | |
| 99 goto err; | |
| 100 } | |
| 101 p=buf_in; | |
| 102 | |
| 103 i2d(data,&p); | |
| 104 if (!EVP_VerifyInit_ex(&ctx,type, NULL) | |
| 105 || !EVP_VerifyUpdate(&ctx,(unsigned char *)buf_in,inl)) | |
| 106 { | |
| 107 ASN1err(ASN1_F_ASN1_VERIFY,ERR_R_EVP_LIB); | |
| 108 ret=0; | |
| 109 goto err; | |
| 110 } | |
| 111 | |
| 112 OPENSSL_cleanse(buf_in,(unsigned int)inl); | |
| 113 OPENSSL_free(buf_in); | |
| 114 | |
| 115 if (EVP_VerifyFinal(&ctx,(unsigned char *)signature->data, | |
| 116 (unsigned int)signature->length,pkey) <= 0) | |
| 117 { | |
| 118 ASN1err(ASN1_F_ASN1_VERIFY,ERR_R_EVP_LIB); | |
| 119 ret=0; | |
| 120 goto err; | |
| 121 } | |
| 122 /* we don't need to zero the 'ctx' because we just checked | |
| 123 * public information */ | |
| 124 /* memset(&ctx,0,sizeof(ctx)); */ | |
| 125 ret=1; | |
| 126 err: | |
| 127 EVP_MD_CTX_cleanup(&ctx); | |
| 128 return(ret); | |
| 129 } | |
| 130 | |
| 131 #endif | |
| 132 | |
| 133 | |
| 134 int ASN1_item_verify(const ASN1_ITEM *it, X509_ALGOR *a, | |
| 135 ASN1_BIT_STRING *signature, void *asn, EVP_PKEY *pkey) | |
| 136 { | |
| 137 EVP_MD_CTX ctx; | |
| 138 unsigned char *buf_in=NULL; | |
| 139 int ret= -1,inl; | |
| 140 | |
| 141 int mdnid, pknid; | |
| 142 | |
| 143 if (!pkey) | |
| 144 { | |
| 145 ASN1err(ASN1_F_ASN1_ITEM_VERIFY, ERR_R_PASSED_NULL_PARAMETER); | |
| 146 return -1; | |
| 147 } | |
| 148 | |
| 149 EVP_MD_CTX_init(&ctx); | |
| 150 | |
| 151 /* Convert signature OID into digest and public key OIDs */ | |
| 152 if (!OBJ_find_sigid_algs(OBJ_obj2nid(a->algorithm), &mdnid, &pknid)) | |
| 153 { | |
| 154 ASN1err(ASN1_F_ASN1_ITEM_VERIFY,ASN1_R_UNKNOWN_SIGNATURE_ALGORIT
HM); | |
| 155 goto err; | |
| 156 } | |
| 157 if (mdnid == NID_undef) | |
| 158 { | |
| 159 if (!pkey->ameth || !pkey->ameth->item_verify) | |
| 160 { | |
| 161 ASN1err(ASN1_F_ASN1_ITEM_VERIFY,ASN1_R_UNKNOWN_SIGNATURE
_ALGORITHM); | |
| 162 goto err; | |
| 163 } | |
| 164 ret = pkey->ameth->item_verify(&ctx, it, asn, a, | |
| 165 signature, pkey); | |
| 166 /* Return value of 2 means carry on, anything else means we | |
| 167 * exit straight away: either a fatal error of the underlying | |
| 168 * verification routine handles all verification. | |
| 169 */ | |
| 170 if (ret != 2) | |
| 171 goto err; | |
| 172 ret = -1; | |
| 173 } | |
| 174 else | |
| 175 { | |
| 176 const EVP_MD *type; | |
| 177 type=EVP_get_digestbynid(mdnid); | |
| 178 if (type == NULL) | |
| 179 { | |
| 180 ASN1err(ASN1_F_ASN1_ITEM_VERIFY,ASN1_R_UNKNOWN_MESSAGE_D
IGEST_ALGORITHM); | |
| 181 goto err; | |
| 182 } | |
| 183 | |
| 184 /* Check public key OID matches public key type */ | |
| 185 if (EVP_PKEY_type(pknid) != pkey->ameth->pkey_id) | |
| 186 { | |
| 187 ASN1err(ASN1_F_ASN1_ITEM_VERIFY,ASN1_R_WRONG_PUBLIC_KEY_
TYPE); | |
| 188 goto err; | |
| 189 } | |
| 190 | |
| 191 if (!EVP_DigestVerifyInit(&ctx, NULL, type, NULL, pkey)) | |
| 192 { | |
| 193 ASN1err(ASN1_F_ASN1_ITEM_VERIFY,ERR_R_EVP_LIB); | |
| 194 ret=0; | |
| 195 goto err; | |
| 196 } | |
| 197 | |
| 198 } | |
| 199 | |
| 200 inl = ASN1_item_i2d(asn, &buf_in, it); | |
| 201 | |
| 202 if (buf_in == NULL) | |
| 203 { | |
| 204 ASN1err(ASN1_F_ASN1_ITEM_VERIFY,ERR_R_MALLOC_FAILURE); | |
| 205 goto err; | |
| 206 } | |
| 207 | |
| 208 if (!EVP_DigestVerifyUpdate(&ctx,buf_in,inl)) | |
| 209 { | |
| 210 ASN1err(ASN1_F_ASN1_ITEM_VERIFY,ERR_R_EVP_LIB); | |
| 211 ret=0; | |
| 212 goto err; | |
| 213 } | |
| 214 | |
| 215 OPENSSL_cleanse(buf_in,(unsigned int)inl); | |
| 216 OPENSSL_free(buf_in); | |
| 217 | |
| 218 if (EVP_DigestVerifyFinal(&ctx,signature->data, | |
| 219 (size_t)signature->length) <= 0) | |
| 220 { | |
| 221 ASN1err(ASN1_F_ASN1_ITEM_VERIFY,ERR_R_EVP_LIB); | |
| 222 ret=0; | |
| 223 goto err; | |
| 224 } | |
| 225 /* we don't need to zero the 'ctx' because we just checked | |
| 226 * public information */ | |
| 227 /* memset(&ctx,0,sizeof(ctx)); */ | |
| 228 ret=1; | |
| 229 err: | |
| 230 EVP_MD_CTX_cleanup(&ctx); | |
| 231 return(ret); | |
| 232 } | |
| 233 | |
| 234 | |
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Chromium Code Reviews
Issue 2072073002:
Delete bundled copy of OpenSSL and replace with README. (Closed)
Base URL: https://chromium.googlesource.com/chromium/deps/openssl@master