From b64270d1e45fe7f3241e4c9b6ce60d5ac89bc2e9 Mon Sep 17 00:00:00 2001
From: beck <>
Date: Wed, 15 May 2002 02:29:21 +0000
Subject: OpenSSL 0.9.7 stable 2002 05 08 merge

---
 src/lib/libcrypto/asn1/a_verify.c | 58 ++++++++++++++++++++++++++++++++++++++-
 1 file changed, 57 insertions(+), 1 deletion(-)

(limited to 'src/lib/libcrypto/asn1/a_verify.c')

diff --git a/src/lib/libcrypto/asn1/a_verify.c b/src/lib/libcrypto/asn1/a_verify.c
index 2a11927e5c..bf41de5146 100644
--- a/src/lib/libcrypto/asn1/a_verify.c
+++ b/src/lib/libcrypto/asn1/a_verify.c
@@ -71,6 +71,8 @@
 #include <openssl/buffer.h>
 #include <openssl/evp.h>
 
+#ifndef NO_ASN1_OLD
+
 int ASN1_verify(int (*i2d)(), X509_ALGOR *a, ASN1_BIT_STRING *signature,
 	     char *data, EVP_PKEY *pkey)
 	{
@@ -79,6 +81,7 @@ int ASN1_verify(int (*i2d)(), X509_ALGOR *a, ASN1_BIT_STRING *signature,
 	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)
@@ -97,7 +100,57 @@ int ASN1_verify(int (*i2d)(), X509_ALGOR *a, ASN1_BIT_STRING *signature,
 	p=buf_in;
 
 	i2d(data,&p);
-	EVP_VerifyInit(&ctx,type);
+	EVP_VerifyInit_ex(&ctx,type, NULL);
+	EVP_VerifyUpdate(&ctx,(unsigned char *)buf_in,inl);
+
+	memset(buf_in,0,(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;
+	const EVP_MD *type;
+	unsigned char *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 = ASN1_item_i2d(asn, &buf_in, it);
+	
+	if (buf_in == NULL)
+		{
+		ASN1err(ASN1_F_ASN1_VERIFY,ERR_R_MALLOC_FAILURE);
+		goto err;
+		}
+
+	EVP_VerifyInit_ex(&ctx,type, NULL);
 	EVP_VerifyUpdate(&ctx,(unsigned char *)buf_in,inl);
 
 	memset(buf_in,0,(unsigned int)inl);
@@ -115,5 +168,8 @@ int ASN1_verify(int (*i2d)(), X509_ALGOR *a, ASN1_BIT_STRING *signature,
 	/* memset(&ctx,0,sizeof(ctx)); */
 	ret=1;
 err:
+	EVP_MD_CTX_cleanup(&ctx);
 	return(ret);
 	}
+
+
-- 
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