Implements new API authentication

Gemfile

@@ -6,9 +6,8 @@ source "http://rubygems.org"
 #   gem "activesupport", ">= 2.3.5"
 gem "activemodel", ">= 3.1"
 gem "activesupport", ">= 3.1"
-
 gem 'curb', '> 0.8.1'
-
+gem "ruby-hmac", "0.4.0"
 
 # Add dependencies to develop your gem here.
 # Include everything needed to run rake, tests, features, etc.

Gemfile.lock

@@ -38,6 +38,7 @@ GEM
     rspec-expectations (2.13.0)
       diff-lcs (>= 1.1.3, < 2.0)
     rspec-mocks (2.13.1)
+    ruby-hmac (0.4.0)
     safe_yaml (0.9.7)
     thread_safe (0.1.0)
       atomic
@@ -58,5 +59,6 @@ DEPENDENCIES
   jeweler (~> 1.8.4)
   rdoc (~> 3.12)
   rspec
+  ruby-hmac (= 0.4.0)
   vcr (= 2.6.0)
   webmock (= 1.13.0)

lib/bitstamp.rb

@@ -2,6 +2,7 @@
 require 'active_support/inflector'
 require 'active_model'
 require 'curb'
+require 'hmac-sha2'
 
 require 'bitstamp/net'
 require 'bitstamp/helper'
@@ -20,6 +21,9 @@ module Bitstamp
 
   # Bitstamp secret
   mattr_accessor :secret
+
+  # Bitstamp client ID
+  mattr_accessor :client_id
 
   # Currency
   mattr_accessor :currency
@@ -54,9 +58,13 @@ def self.order_book
   def self.setup
     yield self
   end
+
+  def self.configured?
+    self.key && self.secret && self.client_id
+  end
 
   def self.sanity_check!
-    unless self.key || self.secret
+    unless configured?
       raise MissingConfigExeception.new("Bitstamp Gem not properly configured")
     end
   end

lib/bitstamp/net.rb

@@ -9,8 +9,11 @@ def self.curl(verb, path, options={})
 
       c = Curl::Easy.new(self.to_uri(path))
 
-      options[:user] = Bitstamp.key
-      options[:password] = Bitstamp.secret
+      if Bitstamp.configured?
+        options[:key] = Bitstamp.key
+        options[:nonce] = Time.now.to_i.to_s
+        options[:signature] = HMAC::SHA256.hexdigest(Bitstamp.secret, options[:nonce]+Bitstamp.client_id+options[:key]).upcase
+      end
 
       c.post_body = options.to_query
 

spec/bitstamp_spec.rb

@@ -11,6 +11,7 @@
         Bitstamp.setup do |config|
           config.key = 'test'
           config.secret = 'test'
+          config.client_id = 'test'
         end
       }
       it { -> { Bitstamp.sanity_check! }.should_not raise_error }
@@ -25,19 +26,19 @@
     subject { Bitstamp.ticker }
     it { should be_kind_of Bitstamp::Ticker }
     its(:high) { should == "124.90" }
-    its(:last) { should == "124.89" }
-    its(:timestamp) { should == "1380232743" }
-    its(:bid) { should == "124.70" }
-    its(:volume) { should == "7603.35699992" }
+    its(:last) { should == "124.55" }
+    its(:timestamp) { should == "1380237724" }
+    its(:bid) { should == "124.55" }
+    its(:volume) { should == "7766.46908740" }
     its(:low) { should == "123.00" }
-    its(:ask) { should == "124.89" }
+    its(:ask) { should == "124.56" }
   end
 
   describe :balance, vcr: {cassette_name: 'bitstamp/balance'} do
     context "configured" do
       subject { Bitstamp.balance }
       before { setup_bitstamp }
-      it { should == {"btc_reserved"=>"0", "fee"=>"0.4000", "btc_available"=>"0", "usd_reserved"=>"0", "btc_balance"=>"0", "usd_balance"=>"6953.07", "usd_available"=>"6953.07"} }      
+      it { should == {"btc_reserved"=>"0", "fee"=>"0.4000", "btc_available"=>"0", "usd_reserved"=>"1.02", "btc_balance"=>"0", "usd_balance"=>"6953.07", "usd_available"=>"6952.05"} }
     end
     context "not configured" do
       it { expect { Bitstamp.balance }.to raise_exception(Bitstamp::MissingConfigExeception, "Bitstamp Gem not properly configured") }