diff --git a/plugin.xml b/plugin.xml
index 1f12bdd..fc4a535 100755
--- a/plugin.xml
+++ b/plugin.xml
@@ -10,13 +10,11 @@
     <vendor>richie</vendor>
     <description><![CDATA[限制能够被远程调用的函数。]]></description>
     <change-notes><![CDATA[
-        [2019-01-14]增加数字签名生成函数。<br/>
         [2019-01-12]初始化插件。<br/>
     ]]></change-notes>
     <extra-core>
         <LocaleFinder class="com.fr.security.function.RemoteEvalLocaleFinder"/>
         <FunctionDefendProvider class="com.fr.security.function.RemoteEvalFunctionDefender"/>
-        <FunctionDefineProvider class="com.fr.security.function.signature.SignatureGenerator" name="SignatureGenerator" description="生成模板路径的数字签名"/>
     </extra-core>
     <function-recorder class="com.fr.security.function.RemoteEvalFunctionDefender"/>
     <lifecycle-monitor class="com.fr.security.function.RemoteEvalInitializeMonitor"/>
diff --git a/src/main/java/com/fr/security/function/signature/SignatureGenerator.java b/src/main/java/com/fr/security/function/signature/SignatureGenerator.java
deleted file mode 100644
index fd79e3e..0000000
--- a/src/main/java/com/fr/security/function/signature/SignatureGenerator.java
+++ /dev/null
@@ -1,46 +0,0 @@
-package com.fr.security.function.signature;
-
-import com.fr.cert.token.JwtBuilder;
-import com.fr.cert.token.Jwts;
-import com.fr.cert.token.SignatureAlgorithm;
-import com.fr.general.GeneralUtils;
-import com.fr.script.AbstractFunction;
-import com.fr.security.function.conf.RemoteEvalConfig;
-import com.fr.stable.ArrayUtils;
-import com.fr.stable.Primitive;
-
-import java.util.Date;
-
-/**
- * @author richie
- * @version 10.0
- * Created by richie on 2019-01-14
- */
-public class SignatureGenerator extends AbstractFunction {
-
-    private static final long VALIDATE_TIME = 10 * 60 * 1000;
-    @Override
-    public Object run(Object[] args) {
-        if (ArrayUtils.isEmpty(args)) {
-            return Primitive.NULL;
-        }
-        return createJwt(GeneralUtils.objectToString(args[0]),  RemoteEvalConfig.getInstance().getSignatureText());
-    }
-
-    private String createJwt(String subject, String key) {
-        SignatureAlgorithm signatureAlgorithm = SignatureAlgorithm.HS256;
-        Date currentTime = new Date();
-        Date expirationTime = new Date(currentTime.getTime() + VALIDATE_TIME);
-        JwtBuilder builder = Jwts.builder()
-                .setSubject(subject)
-                .setIssuedAt(currentTime)
-                .setExpiration(expirationTime)
-                .signWith(signatureAlgorithm, key);
-        return builder.compact();
-    }
-
-    public static void main(String... args) {
-        SignatureGenerator generator = new SignatureGenerator();
-        System.out.println(generator.createJwt("/习题9.cpt", "GhzUsb4fmGwmSk57d3uBZ9jVFCRgZ9CVMT3WoomMHi4="));
-    }
-}