ASN1_ITEM versions of sign, verify, pack and unpack.

The old function pointer versions will eventually go
away.

1 files changed, 73 insertions, 0 deletions

diff --git a/crypto/asn1/a_sign.c b/crypto/asn1/a_sign.c
index 4c651706d2..5be077ddfc 100644
--- a/crypto/asn1/a_sign.c
+++ b/crypto/asn1/a_sign.c
@@ -146,3 +146,76 @@ err:
 		{ memset((char *)buf_out,0,outll); OPENSSL_free(buf_out); }
 	return(outl);
 	}
+
+int ASN1_item_sign(const ASN1_ITEM *it, X509_ALGOR *algor1, X509_ALGOR *algor2,
+	     ASN1_BIT_STRING *signature, void *asn, EVP_PKEY *pkey,
+	     const EVP_MD *type)
+	{
+	EVP_MD_CTX ctx;
+	unsigned char *buf_in=NULL,*buf_out=NULL;
+	int i,inl=0,outl=0,outll=0;
+	X509_ALGOR *a;
+
+	for (i=0; i<2; i++)
+		{
+		if (i == 0)
+			a=algor1;
+		else
+			a=algor2;
+		if (a == NULL) continue;
+		if (	(a->parameter == NULL) || 
+			(a->parameter->type != V_ASN1_NULL))
+			{
+			ASN1_TYPE_free(a->parameter);
+			if ((a->parameter=ASN1_TYPE_new()) == NULL) goto err;
+			a->parameter->type=V_ASN1_NULL;
+			}
+		ASN1_OBJECT_free(a->algorithm);
+		a->algorithm=OBJ_nid2obj(type->pkey_type);
+		if (a->algorithm == NULL)
+			{
+			ASN1err(ASN1_F_ASN1_SIGN,ASN1_R_UNKNOWN_OBJECT_TYPE);
+			goto err;
+			}
+		if (a->algorithm->length == 0)
+			{
+			ASN1err(ASN1_F_ASN1_SIGN,ASN1_R_THE_ASN1_OBJECT_IDENTIFIER_IS_NOT_KNOWN_FOR_THIS_MD);
+			goto err;
+			}
+		}
+	inl=ASN1_item_i2d(asn,&buf_in, it);
+	outll=outl=EVP_PKEY_size(pkey);
+	buf_out=(unsigned char *)OPENSSL_malloc((unsigned int)outl);
+	if ((buf_in == NULL) || (buf_out == NULL))
+		{
+		outl=0;
+		ASN1err(ASN1_F_ASN1_SIGN,ERR_R_MALLOC_FAILURE);
+		goto err;
+		}
+
+	EVP_SignInit(&ctx,type);
+	EVP_SignUpdate(&ctx,(unsigned char *)buf_in,inl);
+	if (!EVP_SignFinal(&ctx,(unsigned char *)buf_out,
+			(unsigned int *)&outl,pkey))
+		{
+		outl=0;
+		ASN1err(ASN1_F_ASN1_SIGN,ERR_R_EVP_LIB);
+		goto err;
+		}
+	if (signature->data != NULL) OPENSSL_free(signature->data);
+	signature->data=buf_out;
+	buf_out=NULL;
+	signature->length=outl;
+	/* In the interests of compatibility, I'll make sure that
+	 * the bit string has a 'not-used bits' value of 0
+	 */
+	signature->flags&= ~(ASN1_STRING_FLAG_BITS_LEFT|0x07);
+	signature->flags|=ASN1_STRING_FLAG_BITS_LEFT;
+err:
+	memset(&ctx,0,sizeof(ctx));
+	if (buf_in != NULL)
+		{ memset((char *)buf_in,0,(unsigned int)inl); OPENSSL_free(buf_in); }
+	if (buf_out != NULL)
+		{ memset((char *)buf_out,0,outll); OPENSSL_free(buf_out); }
+	return(outl);
+	}