补充提交

@@ -23,9 +23,14 @@ class SM2():
     publickey = "MFkwEwYHKoZIzj0CAQYIKoEcz1UBgi0DQgAEsENe/8Sft6rK0h59t2a/6Pf4nzvxvJzc1SzalZe1xSDtUqW/10E/e+RjRbvykyjKzu3vAY1lwv9aU2Tnp6+isw=="
     publickey = "MFkwEwYHKoZIzj0CAQYIKoEcz1UBgi0DQgAEsENe/8Sft6rK0h59t2a/6Pf4nzvxvJzc1SzalZe1xSDtUqW/10E/e+RjRbvykyjKzu3vAY1lwv9aU2Tnp6+isw=="
     sm2_crypt = sm2.CryptSM2(public_key=publickey, private_key=privatekey)
     sm2_crypt = sm2.CryptSM2(public_key=publickey, private_key=privatekey)
 
 
+    @classmethod
     def decode(self, ciphertxt):
     def decode(self, ciphertxt):
         return self.sm2_crypt.decrypt(ciphertxt)
         return self.sm2_crypt.decrypt(ciphertxt)
 
 
+    @classmethod
+    def encode(self, plaintxt):
+        return self.sm2_crypt.encrypt(plaintxt)
+
 
 
 class DES():
 class DES():
     '''
     '''