diff --git a/Gemfile.lock b/Gemfile.lock
index d28949b..efdbd99 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,7 +1,7 @@
 PATH
   remote: .
   specs:
-    qiniu-rs (2.0.5)
+    qiniu-rs (2.1.2)
       json (~> 1.7.3)
       mime-types (~> 1.19)
       rest-client (~> 1.6.7)
diff --git a/README.md b/README.md
index c62a48d..2d420d8 100755
--- a/README.md
+++ b/README.md
@@ -1,4 +1,4 @@
-# Qiniu Resource (Cloud) Storage SDK for Ruby - [![Build Status](https://secure.travis-ci.org/why404/qiniu-rs.png?branch=master)](http://travis-ci.org/why404/qiniu-rs) [![Dependency Status](https://gemnasium.com/why404/qiniu-rs.png)](https://gemnasium.com/why404/qiniu-rs)
+# Qiniu Resource (Cloud) Storage SDK for Ruby - [![Build Status](https://secure.travis-ci.org/why404/qiniu-rs-for-ruby.png?branch=master)](http://travis-ci.org/why404/qiniu-rs-for-ruby) [![Dependency Status](https://gemnasium.com/why404/qiniu-rs-for-ruby.png)](https://gemnasium.com/why404/qiniu-rs-for-ruby)
 
 # 关于
 
diff --git a/lib/qiniu/rs.rb b/lib/qiniu/rs.rb
index 7fe6f9f..4f06cab 100755
--- a/lib/qiniu/rs.rb
+++ b/lib/qiniu/rs.rb
@@ -12,6 +12,9 @@ module Qiniu
     autoload :IO, 'qiniu/rs/io'
     autoload :RS, 'qiniu/rs/rs'
     autoload :Image, 'qiniu/rs/image'
+    autoload :AccessToken, 'qiniu/tokens/access_token'
+    autoload :QboxToken, 'qiniu/tokens/qbox_token'
+    autoload :UploadToken, 'qiniu/tokens/upload_token'
 
     class << self
 
@@ -115,6 +118,21 @@ module Qiniu
         Image.preivew_url(url, spec)
       end
 
+      #def generate_upload_token(scope, expires_in, callback_url = nil, return_url = nil)
+      #  Utils.generate_upload_token(scope, expires_in, callback_url, return_url)
+      #end
+
+      def generate_upload_token(opts = {})
+        token_obj = UploadToken.new(opts)
+        token_obj.access_key = Config.settings[:access_key]
+        token_obj.secret_key = Config.settings[:secret_key]
+        #token_obj.scope = opts[:scope]
+        #token_obj.expires_in = opts[:expires_in]
+        #token_obj.callback_url = opts[:callback_url]
+        #token_obj.return_url = opts[:return_url]
+        token_obj.generate_token
+      end
+
     end
 
   end
diff --git a/lib/qiniu/rs/auth.rb b/lib/qiniu/rs/auth.rb
index ff7aca8..99400f0 100755
--- a/lib/qiniu/rs/auth.rb
+++ b/lib/qiniu/rs/auth.rb
@@ -59,7 +59,7 @@ module Qiniu
         end
 
         def call_with_signature(url, data, retry_times = 0)
-          code, data = http_request url, data, {:signature_auth => true}
+          code, data = http_request url, data, {:qbox_signature_token => generate_qbox_signature(url, data)}
           [code, data]
         end
 
diff --git a/lib/qiniu/rs/config.rb b/lib/qiniu/rs/config.rb
index 28e5a73..8a03a8e 100755
--- a/lib/qiniu/rs/config.rb
+++ b/lib/qiniu/rs/config.rb
@@ -21,9 +21,7 @@ module Qiniu
           :content_type    => 'application/x-www-form-urlencoded',
           :auth_url        => "https://acc.qbox.me/oauth2/token",
           :rs_host         => "http://rs.qbox.me:10100",
-          #:rs_host         => "http://localhost:10100",
           :io_host         => "http://iovip.qbox.me",
-          #:io_host         => "http://localhost:10200",
           :client_id       => "a75604760c4da4caaa456c0c5895c061c3065c5a",
           :client_secret   => "75df554a39f58accb7eb293b550fa59618674b7d",
           :access_key      => "",
diff --git a/lib/qiniu/rs/utils.rb b/lib/qiniu/rs/utils.rb
index 0175524..272115b 100755
--- a/lib/qiniu/rs/utils.rb
+++ b/lib/qiniu/rs/utils.rb
@@ -38,12 +38,15 @@ module Qiniu
           :accept => :json,
           :user_agent => Config.settings[:user_agent]
         }
-        if options[:signature_auth] && options[:signature_auth] == true
-          signature_token = generate_qbox_signature(Config.settings[:access_key], Config.settings[:secret_key], url, data)
-          header_options.merge!('Authorization' => "QBox #{signature_token}")
+        auth_token = nil
+        if !options[:qbox_signature_token].nil? && !options[:qbox_signature_token].empty?
+          auth_token = 'QBox ' + options[:qbox_signature_token]
+        #elsif !options[:upload_signature_token].nil? && !options[:upload_signature_token].empty?
+        #  auth_token = 'UpToken ' + options[:upload_signature_token]
         elsif options[:access_token]
-          header_options.merge!('Authorization' => "Bearer #{options[:access_token]}")
+          auth_token = 'Bearer ' + options[:access_token]
         end
+        header_options.merge!('Authorization' => auth_token) unless auth_token.nil?
         case options[:method]
         when :get
           response = RestClient.get url, header_options
@@ -130,7 +133,9 @@ module Qiniu
         File.open(filepath, "rb") { |f| Zlib.crc32 f.read }
       end
 
-      def generate_qbox_signature(access_key, secret_key, url, params)
+      def generate_qbox_signature(url, params)
+        access_key = Config.settings[:access_key]
+        secret_key = Config.settings[:secret_key]
         uri = URI.parse(url)
         signature = uri.path
         query_string = uri.query
@@ -146,6 +151,21 @@ module Qiniu
         %Q(#{access_key}:#{encoded_digest})
       end
 
+=begin
+      def generate_upload_token(scope, expires_in, callback_url = nil, return_url = nil)
+        access_key = Config.settings[:access_key]
+        secret_key = Config.settings[:secret_key]
+        params = {:scope => scope, :deadline => Time.now.to_i + expires_in}
+        params[:callbackUrl] = callback_url if !callback_url.nil? && !calback_url.empty?
+        params[:returnUrl] = return_url if !return_url.nil? && !return_url.empty?
+        signature = urlsafe_base64_encode(params.to_json)
+        hmac = HMAC::SHA1.new(secret_key)
+        hmac.update(signature)
+        encoded_digest = urlsafe_base64_encode(hmac.digest)
+        %Q(#{access_key}:#{encoded_digest}:#{signature})
+      end
+=end
+
     end
   end
 end
diff --git a/lib/qiniu/rs/version.rb b/lib/qiniu/rs/version.rb
index 2319bbd..b13923f 100755
--- a/lib/qiniu/rs/version.rb
+++ b/lib/qiniu/rs/version.rb
@@ -2,6 +2,6 @@
 
 module Qiniu
   module RS
-    VERSION = "2.0.5"
+    VERSION = "2.1.2"
   end
 end
diff --git a/lib/qiniu/tokens/access_token.rb b/lib/qiniu/tokens/access_token.rb
new file mode 100755
index 0000000..78aa99a
--- /dev/null
+++ b/lib/qiniu/tokens/access_token.rb
@@ -0,0 +1,23 @@
+# -*- encoding: utf-8 -*-
+
+require 'hmac-sha1'
+require 'qiniu/rs/config'
+require 'qiniu/rs/utils'
+
+module Qiniu
+  module RS
+      class AccessToken
+
+        include Utils
+
+        attr_accessor :access_key, :secret_key
+
+        def generate_encoded_digest(signature)
+          hmac = HMAC::SHA1.new(@secret_key)
+          hmac.update(signature)
+          urlsafe_base64_encode(hmac.digest)
+        end
+
+      end
+  end
+end
diff --git a/lib/qiniu/tokens/qbox_token.rb b/lib/qiniu/tokens/qbox_token.rb
new file mode 100755
index 0000000..4c9ef4f
--- /dev/null
+++ b/lib/qiniu/tokens/qbox_token.rb
@@ -0,0 +1,37 @@
+# -*- encoding: utf-8 -*-
+
+require 'json'
+require 'qiniu/tokens/access_token'
+
+module Qiniu
+  module RS
+      class QboxToken < AccessToken
+
+        attr_accessor :url, :params
+
+        def initialize(opts = {})
+          @url = opts[:url]
+          @params = opts[:params]
+        end
+
+        def generate_signature
+          uri = URI.parse(@url)
+          signature = uri.path
+          query_string = uri.query
+          signature += '?' + query_string if !query_string.nil? && !query_string.empty?
+          signature += "\n";
+          if @params.is_a?(Hash)
+            total_param = @params.map { |key, value| key.to_s+"="+value.to_s }
+            signature += total_param.join("&")
+          end
+          signature
+        end
+
+        def generate_token
+          encoded_digest = generate_encoded_digest(signature)
+          %Q(#{@access_key}:#{encoded_digest})
+        end
+
+      end
+  end
+end
diff --git a/lib/qiniu/tokens/upload_token.rb b/lib/qiniu/tokens/upload_token.rb
new file mode 100755
index 0000000..3847607
--- /dev/null
+++ b/lib/qiniu/tokens/upload_token.rb
@@ -0,0 +1,37 @@
+# -*- encoding: utf-8 -*-
+
+require 'json'
+require 'qiniu/tokens/access_token'
+require 'qiniu/rs/utils'
+
+module Qiniu
+  module RS
+      class UploadToken < AccessToken
+
+        include Utils
+
+        attr_accessor :scope, :expires_in, :callback_url, :return_url
+
+        def initialize(opts = {})
+          @scope = opts[:scope]
+          @expires_in = opts[:expires_in]
+          @callback_url = opts[:callback_url]
+          @return_url = opts[:return_url]
+        end
+
+        def generate_signature
+          params = {:scope => @scope, :deadline => Time.now.to_i + @expires_in}
+          params[:callbackUrl] = @callback_url if !@callback_url.nil? && !@calback_url.empty?
+          params[:returnUrl] = @return_url if !@return_url.nil? && !@return_url.empty?
+          urlsafe_base64_encode(params.to_json)
+        end
+
+        def generate_token
+          signature = generate_signature
+          encoded_digest = generate_encoded_digest(signature)
+          %Q(#{@access_key}:#{encoded_digest}:#{signature})
+        end
+
+      end
+  end
+end
diff --git a/spec/qiniu/rs_spec.rb b/spec/qiniu/rs_spec.rb
index 61ac14e..df47efe 100755
--- a/spec/qiniu/rs_spec.rb
+++ b/spec/qiniu/rs_spec.rb
@@ -149,5 +149,13 @@ module Qiniu
       end
     end
 
+    context ".generate_upload_token" do
+      it "should works" do
+        data = Qiniu::RS.generate_upload_token({:scope => 'test_bucket', :expires_in => 3600})
+        data.should_not be_empty
+        puts data.inspect
+      end
+    end
+
   end
 end