diff --git a/lib/dingtalk/api/base.rb b/lib/dingtalk/api/base.rb
index 9b3502e..6778e39 100644
--- a/lib/dingtalk/api/base.rb
+++ b/lib/dingtalk/api/base.rb
@@ -43,12 +43,14 @@ module Dingtalk
         end
 
         def http_get(url, params = {})
-          res = RestClient.get(*payload(url, params))
+          p = default_params.merge(params)
+          res = RestClient.get(request_url(url), p.to_json, content_type: :json)
           JSON.parse(res)
         end
 
         def http_post(url, params = {})
-          res = RestClient.post(*payload(url, params))
+          p = default_params.merge(params)
+          res = RestClient.post(request_url(url), p.to_json, content_type: :json)
           JSON.parse(res)
         end
 
diff --git a/lib/dingtalk/api/suite.rb b/lib/dingtalk/api/suite.rb
index 2338f98..e8cb70d 100644
--- a/lib/dingtalk/api/suite.rb
+++ b/lib/dingtalk/api/suite.rb
@@ -12,10 +12,9 @@ module Dingtalk
 
       def get_permanent_code(tmp_auth_code)
         params = {
-          suite_access_token: suite_access_token,
           tmp_auth_code: tmp_auth_code
         }
-        http_post('get_permanent_code', params)
+        http_post("get_permanent_code?suite_access_token=#{suite_access_token}", params)
       end
 
       def suite_access_token
diff --git a/lib/dingtalk/client.rb b/lib/dingtalk/client.rb
index 133a6d0..9541503 100644
--- a/lib/dingtalk/client.rb
+++ b/lib/dingtalk/client.rb
@@ -11,9 +11,10 @@ module Dingtalk
     def response_json(return_str)
       the_timestamp = timestamp
       the_nonce = nonce
+      encrypted = encrypt(return_str)
       {
-        msg_signature: signature(return_str, the_timestamp, the_nonce),
-        encrypt: encrypt(return_str),
+        msg_signature: signature(return_str, encrypted, the_timestamp, the_nonce),
+        encrypt: encrypted,
         timeStamp: the_timestamp,
         nonce: the_nonce
       }
@@ -23,8 +24,8 @@ module Dingtalk
       encrypt = Dingtalk::Prpcrypt.encrypt(aes_key, return_str, Dingtalk.suite_key)
     end
 
-    def signature(return_str, timestamp, nonce)
-      sort_params = [Dingtalk.suite_token, timestamp, nonce, encrypt(return_str)].sort.join
+    def signature(return_str, encrypted, the_timestamp, the_nonce)
+      sort_params = [Dingtalk.suite_token, the_timestamp, the_nonce, encrypted].sort.join
       Digest::SHA1.hexdigest(sort_params)
     end
 
--
libgit2 0.21.0