Merge pull request #637 from braydonf/feature/public-key-to-address

PublicKey: Added toAddress prototype. Closes #599

lib/publickey.js

@@ -2,6 +2,7 @@
 
 var Point = require('./crypto/point');
 var BN = require('./crypto/bn');
+var Address = require('./address');
 
 /**
  *
@@ -316,6 +317,16 @@ PublicKey.prototype.toDER = function(compressed) {
   }
 };
 
+/**
+ *
+ * Will return an address for the public key
+ *
+ * @returns {Address} An address generated from the public key
+ */
+PublicKey.prototype.toAddress = function(network) {
+  return Address.fromPublicKey(this, network || 'livenet');
+};
+
 /**
  *
  * Will output the PublicKey to a DER encoded hex string

test/publickey.js

@@ -256,6 +256,22 @@ describe('PublicKey', function() {
 
   });
 
+  describe('#toAddress', function() {
+
+    it('should output this known mainnet address correctly', function() {
+      var pk = new PublicKey('03c87bd0e162f26969da8509cafcb7b8c8d202af30b928c582e263dd13ee9a9781');
+      var address = pk.toAddress('mainnet');
+      address.toString().should.equal('1A6ut1tWnUq1SEQLMr4ttDh24wcbJ5o9TT');
+    });
+
+    it('should output this known testnet address correctly', function() {
+      var pk = new PublicKey('0293126ccc927c111b88a0fe09baa0eca719e2a3e087e8a5d1059163f5c566feef');
+      var address = pk.toAddress('testnet');
+      address.toString().should.equal('mtX8nPZZdJ8d3QNLRJ1oJTiEi26Sj6LQXS');
+    });
+
+  });
+
   describe('#toString', function() {
 
     it('should print this known public key', function() {