diff options
Diffstat (limited to 'openssl/crypto/asn1/a_verify.c')
| -rw-r--r-- | openssl/crypto/asn1/a_verify.c | 327 |
1 files changed, 156 insertions, 171 deletions
diff --git a/openssl/crypto/asn1/a_verify.c b/openssl/crypto/asn1/a_verify.c index 78dde1d05..3ffd934cb 100644 --- a/openssl/crypto/asn1/a_verify.c +++ b/openssl/crypto/asn1/a_verify.c @@ -5,21 +5,21 @@ * This package is an SSL implementation written * by Eric Young (eay@cryptsoft.com). * The implementation was written so as to conform with Netscapes SSL. - * + * * This library is free for commercial and non-commercial use as long as * the following conditions are aheared to. The following conditions * apply to all code found in this distribution, be it the RC4, RSA, * lhash, DES, etc., code; not just the SSL code. The SSL documentation * included with this distribution is covered by the same copyright terms * except that the holder is Tim Hudson (tjh@cryptsoft.com). - * + * * Copyright remains Eric Young's, and as such any Copyright notices in * the code are not to be removed. * If this package is used in a product, Eric Young should be given attribution * as the author of the parts of the library used. * This can be in the form of a textual message at program startup or * in documentation (online or textual) provided with the package. - * + * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: @@ -34,10 +34,10 @@ * Eric Young (eay@cryptsoft.com)" * The word 'cryptographic' can be left out if the rouines from the library * being used are not cryptographic related :-). - * 4. If you include any Windows specific code (or a derivative thereof) from + * 4. If you include any Windows specific code (or a derivative thereof) from * the apps directory (application code) you must include an acknowledgement: * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" - * + * * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE @@ -49,7 +49,7 @@ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. - * + * * The licence and distribution terms for any publically available version or * derivative of this code cannot be changed. i.e. this code cannot simply be * copied and put under another distribution licence @@ -75,172 +75,157 @@ #ifndef NO_ASN1_OLD int ASN1_verify(i2d_of_void *i2d, X509_ALGOR *a, ASN1_BIT_STRING *signature, - char *data, EVP_PKEY *pkey) - { - EVP_MD_CTX ctx; - const EVP_MD *type; - unsigned char *p,*buf_in=NULL; - int ret= -1,i,inl; - - EVP_MD_CTX_init(&ctx); - i=OBJ_obj2nid(a->algorithm); - type=EVP_get_digestbyname(OBJ_nid2sn(i)); - if (type == NULL) - { - ASN1err(ASN1_F_ASN1_VERIFY,ASN1_R_UNKNOWN_MESSAGE_DIGEST_ALGORITHM); - goto err; - } - - if (signature->type == V_ASN1_BIT_STRING && signature->flags & 0x7) - { - ASN1err(ASN1_F_ASN1_VERIFY, ASN1_R_INVALID_BIT_STRING_BITS_LEFT); - goto err; - } - - inl=i2d(data,NULL); - buf_in=OPENSSL_malloc((unsigned int)inl); - if (buf_in == NULL) - { - ASN1err(ASN1_F_ASN1_VERIFY,ERR_R_MALLOC_FAILURE); - goto err; - } - p=buf_in; - - i2d(data,&p); - if (!EVP_VerifyInit_ex(&ctx,type, NULL) - || !EVP_VerifyUpdate(&ctx,(unsigned char *)buf_in,inl)) - { - ASN1err(ASN1_F_ASN1_VERIFY,ERR_R_EVP_LIB); - ret=0; - goto err; - } - - OPENSSL_cleanse(buf_in,(unsigned int)inl); - OPENSSL_free(buf_in); - - if (EVP_VerifyFinal(&ctx,(unsigned char *)signature->data, - (unsigned int)signature->length,pkey) <= 0) - { - ASN1err(ASN1_F_ASN1_VERIFY,ERR_R_EVP_LIB); - ret=0; - goto err; - } - /* we don't need to zero the 'ctx' because we just checked - * public information */ - /* memset(&ctx,0,sizeof(ctx)); */ - ret=1; -err: - EVP_MD_CTX_cleanup(&ctx); - return(ret); - } + char *data, EVP_PKEY *pkey) +{ + EVP_MD_CTX ctx; + const EVP_MD *type; + unsigned char *p, *buf_in = NULL; + int ret = -1, i, inl; + + EVP_MD_CTX_init(&ctx); + i = OBJ_obj2nid(a->algorithm); + type = EVP_get_digestbyname(OBJ_nid2sn(i)); + if (type == NULL) { + ASN1err(ASN1_F_ASN1_VERIFY, ASN1_R_UNKNOWN_MESSAGE_DIGEST_ALGORITHM); + goto err; + } + + if (signature->type == V_ASN1_BIT_STRING && signature->flags & 0x7) { + ASN1err(ASN1_F_ASN1_VERIFY, ASN1_R_INVALID_BIT_STRING_BITS_LEFT); + goto err; + } + + inl = i2d(data, NULL); + buf_in = OPENSSL_malloc((unsigned int)inl); + if (buf_in == NULL) { + ASN1err(ASN1_F_ASN1_VERIFY, ERR_R_MALLOC_FAILURE); + goto err; + } + p = buf_in; + + i2d(data, &p); + if (!EVP_VerifyInit_ex(&ctx, type, NULL) + || !EVP_VerifyUpdate(&ctx, (unsigned char *)buf_in, inl)) { + ASN1err(ASN1_F_ASN1_VERIFY, ERR_R_EVP_LIB); + ret = 0; + goto err; + } + + OPENSSL_cleanse(buf_in, (unsigned int)inl); + OPENSSL_free(buf_in); + + if (EVP_VerifyFinal(&ctx, (unsigned char *)signature->data, + (unsigned int)signature->length, pkey) <= 0) { + ASN1err(ASN1_F_ASN1_VERIFY, ERR_R_EVP_LIB); + ret = 0; + goto err; + } + /* + * we don't need to zero the 'ctx' because we just checked public + * information + */ + /* memset(&ctx,0,sizeof(ctx)); */ + ret = 1; + err: + EVP_MD_CTX_cleanup(&ctx); + return (ret); +} #endif - int ASN1_item_verify(const ASN1_ITEM *it, X509_ALGOR *a, - ASN1_BIT_STRING *signature, void *asn, EVP_PKEY *pkey) - { - EVP_MD_CTX ctx; - unsigned char *buf_in=NULL; - int ret= -1,inl; - - int mdnid, pknid; - - if (!pkey) - { - ASN1err(ASN1_F_ASN1_ITEM_VERIFY, ERR_R_PASSED_NULL_PARAMETER); - return -1; - } - - if (signature->type == V_ASN1_BIT_STRING && signature->flags & 0x7) - { - ASN1err(ASN1_F_ASN1_ITEM_VERIFY, ASN1_R_INVALID_BIT_STRING_BITS_LEFT); - return -1; - } - - EVP_MD_CTX_init(&ctx); - - /* Convert signature OID into digest and public key OIDs */ - if (!OBJ_find_sigid_algs(OBJ_obj2nid(a->algorithm), &mdnid, &pknid)) - { - ASN1err(ASN1_F_ASN1_ITEM_VERIFY,ASN1_R_UNKNOWN_SIGNATURE_ALGORITHM); - goto err; - } - if (mdnid == NID_undef) - { - if (!pkey->ameth || !pkey->ameth->item_verify) - { - ASN1err(ASN1_F_ASN1_ITEM_VERIFY,ASN1_R_UNKNOWN_SIGNATURE_ALGORITHM); - goto err; - } - ret = pkey->ameth->item_verify(&ctx, it, asn, a, - signature, pkey); - /* Return value of 2 means carry on, anything else means we - * exit straight away: either a fatal error of the underlying - * verification routine handles all verification. - */ - if (ret != 2) - goto err; - ret = -1; - } - else - { - const EVP_MD *type; - type=EVP_get_digestbynid(mdnid); - if (type == NULL) - { - ASN1err(ASN1_F_ASN1_ITEM_VERIFY,ASN1_R_UNKNOWN_MESSAGE_DIGEST_ALGORITHM); - goto err; - } - - /* Check public key OID matches public key type */ - if (EVP_PKEY_type(pknid) != pkey->ameth->pkey_id) - { - ASN1err(ASN1_F_ASN1_ITEM_VERIFY,ASN1_R_WRONG_PUBLIC_KEY_TYPE); - goto err; - } - - if (!EVP_DigestVerifyInit(&ctx, NULL, type, NULL, pkey)) - { - ASN1err(ASN1_F_ASN1_ITEM_VERIFY,ERR_R_EVP_LIB); - ret=0; - goto err; - } - - } - - inl = ASN1_item_i2d(asn, &buf_in, it); - - if (buf_in == NULL) - { - ASN1err(ASN1_F_ASN1_ITEM_VERIFY,ERR_R_MALLOC_FAILURE); - goto err; - } - - if (!EVP_DigestVerifyUpdate(&ctx,buf_in,inl)) - { - ASN1err(ASN1_F_ASN1_ITEM_VERIFY,ERR_R_EVP_LIB); - ret=0; - goto err; - } - - OPENSSL_cleanse(buf_in,(unsigned int)inl); - OPENSSL_free(buf_in); - - if (EVP_DigestVerifyFinal(&ctx,signature->data, - (size_t)signature->length) <= 0) - { - ASN1err(ASN1_F_ASN1_ITEM_VERIFY,ERR_R_EVP_LIB); - ret=0; - goto err; - } - /* we don't need to zero the 'ctx' because we just checked - * public information */ - /* memset(&ctx,0,sizeof(ctx)); */ - ret=1; -err: - EVP_MD_CTX_cleanup(&ctx); - return(ret); - } - - + ASN1_BIT_STRING *signature, void *asn, EVP_PKEY *pkey) +{ + EVP_MD_CTX ctx; + unsigned char *buf_in = NULL; + int ret = -1, inl; + + int mdnid, pknid; + + if (!pkey) { + ASN1err(ASN1_F_ASN1_ITEM_VERIFY, ERR_R_PASSED_NULL_PARAMETER); + return -1; + } + + if (signature->type == V_ASN1_BIT_STRING && signature->flags & 0x7) { + ASN1err(ASN1_F_ASN1_ITEM_VERIFY, ASN1_R_INVALID_BIT_STRING_BITS_LEFT); + return -1; + } + + EVP_MD_CTX_init(&ctx); + + /* Convert signature OID into digest and public key OIDs */ + if (!OBJ_find_sigid_algs(OBJ_obj2nid(a->algorithm), &mdnid, &pknid)) { + ASN1err(ASN1_F_ASN1_ITEM_VERIFY, ASN1_R_UNKNOWN_SIGNATURE_ALGORITHM); + goto err; + } + if (mdnid == NID_undef) { + if (!pkey->ameth || !pkey->ameth->item_verify) { + ASN1err(ASN1_F_ASN1_ITEM_VERIFY, + ASN1_R_UNKNOWN_SIGNATURE_ALGORITHM); + goto err; + } + ret = pkey->ameth->item_verify(&ctx, it, asn, a, signature, pkey); + /* + * Return value of 2 means carry on, anything else means we exit + * straight away: either a fatal error of the underlying verification + * routine handles all verification. + */ + if (ret != 2) + goto err; + ret = -1; + } else { + const EVP_MD *type; + type = EVP_get_digestbynid(mdnid); + if (type == NULL) { + ASN1err(ASN1_F_ASN1_ITEM_VERIFY, + ASN1_R_UNKNOWN_MESSAGE_DIGEST_ALGORITHM); + goto err; + } + + /* Check public key OID matches public key type */ + if (EVP_PKEY_type(pknid) != pkey->ameth->pkey_id) { + ASN1err(ASN1_F_ASN1_ITEM_VERIFY, ASN1_R_WRONG_PUBLIC_KEY_TYPE); + goto err; + } + + if (!EVP_DigestVerifyInit(&ctx, NULL, type, NULL, pkey)) { + ASN1err(ASN1_F_ASN1_ITEM_VERIFY, ERR_R_EVP_LIB); + ret = 0; + goto err; + } + + } + + inl = ASN1_item_i2d(asn, &buf_in, it); + + if (buf_in == NULL) { + ASN1err(ASN1_F_ASN1_ITEM_VERIFY, ERR_R_MALLOC_FAILURE); + goto err; + } + + if (!EVP_DigestVerifyUpdate(&ctx, buf_in, inl)) { + ASN1err(ASN1_F_ASN1_ITEM_VERIFY, ERR_R_EVP_LIB); + ret = 0; + goto err; + } + + OPENSSL_cleanse(buf_in, (unsigned int)inl); + OPENSSL_free(buf_in); + + if (EVP_DigestVerifyFinal(&ctx, signature->data, + (size_t)signature->length) <= 0) { + ASN1err(ASN1_F_ASN1_ITEM_VERIFY, ERR_R_EVP_LIB); + ret = 0; + goto err; + } + /* + * we don't need to zero the 'ctx' because we just checked public + * information + */ + /* memset(&ctx,0,sizeof(ctx)); */ + ret = 1; + err: + EVP_MD_CTX_cleanup(&ctx); + return (ret); +} |