diff --git a/src/main/java/com/sunyard/inf/SydSVApi.java b/src/main/java/com/sunyard/inf/SydSVApi.java
index b1c11a7..17f3d39 100644
--- a/src/main/java/com/sunyard/inf/SydSVApi.java
+++ b/src/main/java/com/sunyard/inf/SydSVApi.java
@@ -3,6 +3,7 @@ package com.sunyard.inf;
 
 import com.sunyard.RetWrap;
 import com.sunyard.cert.X509;
+import com.sunyard.inf.sva.SydAttachedSVApi;
 
 import java.io.UnsupportedEncodingException;
 
diff --git a/src/main/java/com/sunyard/inf/sva/SydAttachedSVApi.java b/src/main/java/com/sunyard/inf/sva/SydAttachedSVApi.java
index d0f96e7..2340887 100644
--- a/src/main/java/com/sunyard/inf/sva/SydAttachedSVApi.java
+++ b/src/main/java/com/sunyard/inf/sva/SydAttachedSVApi.java
@@ -1,4 +1,4 @@
-package com.sunyard.inf;
+package com.sunyard.inf.sva;
 
 import com.sunyard.RetWrap;
 import com.sunyard.cert.X509;
@@ -8,7 +8,7 @@ import java.io.UnsupportedEncodingException;
 /**
  * 带原文的签名验签
  */
-interface SydAttachedSVApi {
+public interface SydAttachedSVApi {
 
     /**
      * sm2私钥签名