diff --git a/inc/Maat_rule.h b/inc/Maat_rule.h
index b2f5c1c..78998b0 100644
--- a/inc/Maat_rule.h
+++ b/inc/Maat_rule.h
@@ -37,6 +37,8 @@ enum MAAT_POS_TYPE
 typedef	void*	scan_status_t;
 typedef	void*	stream_para_t;
 typedef	void*	Maat_feather_t;
+
+
 #define	MAX_SERVICE_DEFINE_LEN	128
 struct Maat_rule_t
 {
@@ -166,6 +168,15 @@ int Maat_stream_scan_string_detail(stream_para_t* stream_para
 									,int* detail_ret,scan_status_t* mid);
 void Maat_stream_scan_string_end(stream_para_t* stream_para);
 
+stream_para_t Maat_stream_scan_digest_start(Maat_feather_t feather,int table_id,unsigned long long total_len,int thread_num);
+int Maat_stream_scan_digest(stream_para_t* stream_para
+									,const char* data,int data_len
+									,struct Maat_rule_t*result,int rule_num
+									,scan_status_t* mid);
+void Maat_stream_scan_digest_end(stream_para_t* stream_para);
+
+
+
 void Maat_clean_status(scan_status_t* mid);
 
 #define	MAAT_OPT_SCANDIR_INTERVAL_MS		1	//opt value is interger,size=sizeof(int),1,000 milliseconds as default 
diff --git a/src/entry/Maat_rule_internal.h b/src/entry/Maat_rule_internal.h
index 5357f24..ac466fb 100644
--- a/src/entry/Maat_rule_internal.h
+++ b/src/entry/Maat_rule_internal.h
@@ -287,3 +287,4 @@ struct _maat_garbage_t
 };
 void garbage_bagging(enum maat_garbage_type type,void *p,MESA_lqueue_head garbage_q);
 void garbage_bury(MESA_lqueue_head garbage_q,void *logger);
+