diff --git a/lib/wx_pay.rb b/lib/wx_pay.rb
index 6edef40..4be7774 100644
--- a/lib/wx_pay.rb
+++ b/lib/wx_pay.rb
@@ -1,11 +1,28 @@
 require 'wx_pay/result'
 require 'wx_pay/sign'
 require 'wx_pay/service'
+require 'openssl'
 
 module WxPay
   @rest_client_options = {}
 
   class<< self
     attr_accessor :appid, :mch_id, :key, :apiclient_cert, :apiclient_key, :extra_rest_client_options
+
+    def set_apiclient_by_pkcs12(str, pass)
+      pkcs12 = OpenSSL::PKCS12.new(str, pass)
+      @apiclient_cert = pkcs12.certificate
+      @apiclient_key = pkcs12.key
+
+      pkcs12
+    end
+
+    def apiclient_cert=(cert)
+      @apiclient_cert = OpenSSL::X509::Certificate.new(cert)
+    end
+
+    def apiclient_key=(key)
+      @apiclient_key = OpenSSL::PKey::RSA.new(key)
+    end
   end
 end
--
libgit2 0.21.0