@@ -602,10 +602,15 @@
 							break;
 						}
 
 						tmpDestinationLength = *destinationLength;
 						chk_rv = moduleFunctionList->C_Sign(hSession, data, dataLength, destination, &tmpDestinationLength);
+
+						if (tmpDestinationLength == 0) {
+							chk_rv = CKR_GENERAL_ERROR;
+						}
+
 						switch (chk_rv) {
 							case CKR_OK:
 								*destinationLength = tmpDestinationLength;
 								retval = CACKEY_CHROME_OK;
 								break;