* 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:
* 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
* 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
#include <time.h>
#include "cryptlib.h"
-#include "asn1_locl.h"
#ifndef NO_SYS_TYPES_H
# include <sys/types.h>
#include <openssl/objects.h>
#include <openssl/buffer.h>
#include <openssl/evp.h>
+#include "internal/asn1_int.h"
#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;
- }
-
- 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);
- EVP_VerifyInit_ex(&ctx,type, NULL);
- EVP_VerifyUpdate(&ctx,(unsigned char *)buf_in,inl);
-
- 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);
+ ret = EVP_VerifyInit_ex(&ctx, type, NULL)
+ && EVP_VerifyUpdate(&ctx, (unsigned char *)buf_in, inl);
+
+ OPENSSL_clear_free(buf_in, (unsigned int)inl);
+
+ if (!ret) {
+ ASN1err(ASN1_F_ASN1_VERIFY, ERR_R_EVP_LIB);
+ goto err;
+ }
+ ret = -1;
+
+ 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;
- const EVP_MD *type = NULL;
- unsigned char *buf_in=NULL;
- int ret= -1,inl;
-
- int mdnid, pknid;
-
- /* 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;
- }
- 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;
- }
-
- EVP_MD_CTX_init(&ctx);
- if (!EVP_VerifyInit_ex(&ctx,type, NULL))
- {
- 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;
- }
-
- EVP_VerifyUpdate(&ctx,(unsigned char *)buf_in,inl);
-
- 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_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);
- }
-
-
+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;
+ }
+
+ ret = EVP_DigestVerifyUpdate(&ctx, buf_in, inl);
+
+ OPENSSL_clear_free(buf_in, (unsigned int)inl);
+
+ if (!ret) {
+ ASN1err(ASN1_F_ASN1_ITEM_VERIFY, ERR_R_EVP_LIB);
+ goto err;
+ }
+ ret = -1;
+
+ 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);
+}
projects / openssl.git / blobdiff