From dea969d5441cc00fd44075e987e8faf215966762 Mon Sep 17 00:00:00 2001
From: Braydon Fuller <braydon@bitpay.com>
Date: Wed, 16 Jul 2014 13:46:49 -0400
Subject: [PATCH] Added feature to validate a SIN

---
 lib/bitauth.js  | 15 +++++++++++++++
 package.json    |  1 +
 test/bitauth.js | 39 +++++++++++++++++++++++++++++++++++++++
 3 files changed, 55 insertions(+)

diff --git a/lib/bitauth.js b/lib/bitauth.js
index 98fc875..e24e9b4 100644
--- a/lib/bitauth.js
+++ b/lib/bitauth.js
@@ -59,4 +59,19 @@ BitAuth.verifySignature = function(data, pubkey, signature, callback) {
   }
 };
 
+BitAuth.validateSin = function(sin, callback) {
+  var s = new SIN(sin);
+
+  try {
+    s.validate()
+  } catch(err) {
+    if ( callback )
+      callback(err);
+    return false;
+  }
+  if ( callback )
+    callback(null);
+  return true;
+};
+
 module.exports = BitAuth;
diff --git a/package.json b/package.json
index fd0df9a..feb1ab2 100644
--- a/package.json
+++ b/package.json
@@ -33,6 +33,7 @@
     "uglify-js": "~2.4.14",
     "browserify": "~4.1.11",
     "should": "~4.0.4",
+    "expect.js": "~0.3.1",
     "mocha": "~1.20.1"
   }
 }
diff --git a/test/bitauth.js b/test/bitauth.js
index 94b7185..384063b 100644
--- a/test/bitauth.js
+++ b/test/bitauth.js
@@ -1,9 +1,12 @@
 var should  = require('should');
+var expect  = require('expect.js');
 var bitauth = require('../index');
 
 describe('bitauth', function() {
 
   var keys      = null;
+  var sin       = 'Tf1Jc1xSbqasm5QLwwSQc5umddx2h7mAMHX';
+  var sinb      = 'Tf1Jc1xSbqasm5QLwwSQc5umddx2h7mAMhX';
   var contract  = 'keyboard cat';
   var secret    = 'o hai, nsa. how i do teh cryptos?';
   var password  = 's4705hiru13z!';
@@ -59,6 +62,42 @@ describe('bitauth', function() {
 
   });
 
+  describe('#validateSinTrue', function() {
+
+    it('should validate the sin as true', function(done) {
+      var valid = bitauth.validateSin(sin);
+      should.equal(true, valid);
+      done();
+    });
+
+  });
+
+  describe('#validateSinFalse', function() {
+
+    it('should validate the sin as false', function(done) {
+      var valid = bitauth.validateSin(sinb);
+      should.equal(false, valid);
+      done();
+    });
+
+  });
+
+  describe('#validateSinCallback', function() {
+
+    var received;
+
+    var valid = bitauth.validateSin(sinb, function(err){
+      if ( err && typeof(err) == 'object' ) {
+        received = true;
+      }
+    });
+
+    it('should receive error callback', function() {
+      expect(received).to.eql(true);
+    });
+
+  });
+
   describe('#encrypt', function() {
 
     it('should encrypt the secret message', function(done) {