增加签名数字信封、解签名数字信封接口

src/main/java/com/sunyard/SydApi.java

@@ -2,6 +2,7 @@ package com.sunyard;
 
 
 import com.sunyard.inf.*;
+import com.sunyard.inf.customize.Syd4DigitalEnvelope;
 import com.sunyard.inf.customize.SydHAApi;
 import com.sunyard.inf.customize.SydQNUCApi;
 import com.sunyard.inf.customize.SydUnionPayApi;
@@ -14,7 +15,7 @@ import racal.sunyard.main.SydApiBuilder;
 public interface SydApi extends
         SydRawApi, SydCertApi, SydCryptionApi, SydGenApi,
         SydSVApi, SydHAApi, SydQNUCApi, SydPledge, SydPINOpt,
-        SydManufactureApi, SydZYOption, SydUnionPayApi {
+        SydManufactureApi, SydZYOption, SydUnionPayApi ,Syd4DigitalEnvelope{
 
     byte ALG_AES = 0x30;
     byte ALG_SM4 = 0x31;
@@ -101,6 +102,7 @@ public interface SydApi extends
     // 单例可以不实现
     void error();
 
+
     /**
      * 获取加密机cpu，内存，磁盘使用状况
      *