diff --git a/lib/jenkins_api_client/client.rb b/lib/jenkins_api_client/client.rb
index 55ee530e..fcf7208c 100644
--- a/lib/jenkins_api_client/client.rb
+++ b/lib/jenkins_api_client/client.rb
@@ -67,9 +67,11 @@ class Client
       "http_open_timeout",
       "http_read_timeout",
       "ssl",
+      "pkcs_file_path",
+      "pass_phrase",
       "follow_redirects",
       "identity_file",
-      "cookies"
+      "cookies"      
     ].freeze
 
     # Initialize a Client object with Jenkins CI server credentials
@@ -92,6 +94,8 @@ class Client
     # @option args [String] :proxy_protocol the proxy protocol ('socks' or 'http' (defaults to HTTP)
     # @option args [String] :jenkins_path ("/") the optional context path for Jenkins
     # @option args [Boolean] :ssl (false) indicates if Jenkins is accessible over HTTPS
+    # @option args [String] :pkcs_file_path ("/") the optional context path for pfx or p12 binary certificate file
+    # @option args [String] :pass_phrase password for pkcs_file_path certificate file 
     # @option args [Boolean] :follow_redirects this argument causes the client to follow a redirect (jenkins can
     #   return a 30x when starting a build)
     # @option args [Fixnum] :timeout (120) This argument sets the timeout for operations that take longer (in seconds)
@@ -100,7 +104,7 @@ class Client
     # @option args [Fixnum] :log_level (Logger::INFO) The level for messages to be logged. Should be one of:
     #   Logger::DEBUG (0), Logger::INFO (1), Logger::WARN (2), Logger::ERROR (2), Logger::FATAL (3)
     # @option args [String] :cookies Cookies to be sent with all requests in the format: name=value; name2=value2
-    #
+    # 
     # @return [JenkinsApi::Client] a client object to Jenkins API
     #
     # @raise [ArgumentError] when required options are not provided.
@@ -308,12 +312,17 @@ def make_http_request(request, follow_redirect = @follow_redirects)
       else
         http = Net::HTTP.new(@server_ip, @server_port)
       end
-
-      if @ssl
+      
+      if @ssl && @pkcs_file_path
         http.use_ssl = true
+        pkcs12 =OpenSSL::PKCS12.new(File.binread(@pkcs_file_path), @pass_phrase!=nil ? @pass_phrase : "")
+        http.cert = pkcs12.certificate
+        http.key = pkcs12.key
         http.verify_mode = OpenSSL::SSL::VERIFY_NONE
+      elsif @ssl
+        http.use_ssl = true
+        http.verify_mode = OpenSSL::SSL::VERIFY_NONE  
       end
-
       http.open_timeout = @http_open_timeout
       http.read_timeout = @http_read_timeout