import OpenSSL-1.0.1c

1 files changed, 54 insertions, 23 deletions

diff --git a/src/lib/libcrypto/asn1/a_verify.c b/src/lib/libcrypto/asn1/a_verify.c
index cecdb13c70..432722e409 100644
--- a/src/lib/libcrypto/asn1/a_verify.c
+++ b/src/lib/libcrypto/asn1/a_verify.c
@@ -101,8 +101,13 @@ int ASN1_verify(i2d_of_void *i2d, X509_ALGOR *a, ASN1_BIT_STRING *signature,
         p=buf_in;
 
         i2d(data,&p);
-        EVP_VerifyInit_ex(&ctx,type, NULL);
-        EVP_VerifyUpdate(&ctx,(unsigned char *)buf_in,inl);
+        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);
@@ -126,11 +131,10 @@ err:
 #endif
 
 
-int ASN1_item_verify(const ASN1_ITEM *it, X509_ALGOR *a, ASN1_BIT_STRING *signature,
-             void *asn, EVP_PKEY *pkey)
+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;
 
@@ -144,25 +148,47 @@ int ASN1_item_verify(const ASN1_ITEM *it, X509_ALGOR *a, ASN1_BIT_STRING *signat
                 ASN1err(ASN1_F_ASN1_ITEM_VERIFY,ASN1_R_UNKNOWN_SIGNATURE_ALGORITHM);
                 goto err;
                 }
-        type=EVP_get_digestbynid(mdnid);
-        if (type == NULL)
+        if (mdnid == NID_undef)
                 {
-                ASN1err(ASN1_F_ASN1_ITEM_VERIFY,ASN1_R_UNKNOWN_MESSAGE_DIGEST_ALGORITHM);
-                goto err;
+                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;
                 }
-
-        /* Check public key OID matches public key type */
-        if (EVP_PKEY_type(pknid) != pkey->ameth->pkey_id)
+        else
                 {
-                ASN1err(ASN1_F_ASN1_ITEM_VERIFY,ASN1_R_WRONG_PUBLIC_KEY_TYPE);
-                goto err;
-                }
+                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;
+                        }
 
-        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);
@@ -173,13 +199,18 @@ int ASN1_item_verify(const ASN1_ITEM *it, X509_ALGOR *a, ASN1_BIT_STRING *signat
                 goto err;
                 }
 
-        EVP_VerifyUpdate(&ctx,(unsigned char *)buf_in,inl);
+        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_VerifyFinal(&ctx,(unsigned char *)signature->data,
-                        (unsigned int)signature->length,pkey) <= 0)
+        if (EVP_DigestVerifyFinal(&ctx,signature->data,
+                        (size_t)signature->length) <= 0)
                 {
                 ASN1err(ASN1_F_ASN1_ITEM_VERIFY,ERR_R_EVP_LIB);
                 ret=0;