diff --git a/src/bip32.js b/src/bip32.js
index cbade7e..0b83ac9 100644
--- a/src/bip32.js
+++ b/src/bip32.js
@@ -50,7 +50,7 @@ BIP32key.prototype.deserialize = function(str) {
         i: util.bytesToNum(bytes.slice(9,13).reverse()),
         chaincode: bytes.slice(13,45),
         key: type == 'priv' ? new ECKey(bytes.slice(46,78).concat([1]),true)
-                            : new ECPubKey(bytes.slice(45,78))
+                            : new ECPubKey(bytes.slice(45,78),true)
     })
 }
 
@@ -76,7 +76,7 @@ BIP32key.prototype.ckd = function(i) {
     else pub = this.key.export('bytes')
 
     if (i >= 2147483648) {
-        if (this.priv) throw new Error("Can't do private derivation on public key!")
+        if (!priv) throw new Error("Can't do private derivation on public key!")
         blob = [0].concat(priv.slice(0,32),util.numToBytes(i,4).reverse())
     }
     else blob = pub.concat(util.numToBytes(i,4).reverse())
diff --git a/src/ecdsa.js b/src/ecdsa.js
index ed9b90c..53770df 100644
--- a/src/ecdsa.js
+++ b/src/ecdsa.js
@@ -285,10 +285,12 @@ var ECDSA = {
    * This function simply tries all four cases and returns the value
    * that resulted in a successful pubkey recovery.
    */
-  calcPubkeyRecoveryParam: function (address, r, s, hash)
+  calcPubkeyRecoveryParam: function (origPubkey, r, s, hash)
   {
+    var address = origPubkey.getBitcoinAddress().toString();
     for (var i = 0; i < 4; i++) {
       var pubkey = ECDSA.recoverPubKey(r, s, hash, i);
+      pubkey.compressed = origPubkey.compressed;
       if (pubkey.getBitcoinAddress().toString() == address) {
         return i;
       }
diff --git a/src/message.js b/src/message.js
index abc2da5..ef29117 100644
--- a/src/message.js
+++ b/src/message.js
@@ -34,8 +34,7 @@ Message.signMessage = function (key, message, compressed) {
 
   var obj = ecdsa.parseSig(sig);
 
-  var address = key.getBitcoinAddress().toString();
-  var i = ecdsa.calcPubkeyRecoveryParam(address, obj.r, obj.s, hash);
+  var i = ecdsa.calcPubkeyRecoveryParam(key, obj.r, obj.s, hash);
 
   i += 27;
   if (compressed) i += 4;
diff --git a/test/bip32.js b/test/bip32.js
new file mode 100644
index 0000000..2ccee37
--- /dev/null
+++ b/test/bip32.js
@@ -0,0 +1,98 @@
+// Tests from https://github.com/bitcoin/bips/blob/master/bip-0032.mediawiki#Test_Vectors
+
+var assert = require('assert');
+var BIP32key = require('..').BIP32key;
+
+var hexToBytes = require('../').convert.hexToBytes;
+var bytesToString = require('../').convert.bytesToString;
+
+var BIP32_PRIME = 0x80000000;
+
+function checkKey(key, extPriv, extPub) {
+  assert.equal(key.serialize(), extPriv);
+  assert.equal(key.getPub().serialize(), extPub);
+}
+
+test("BIP32 Test vector 1", function () {
+  var seed_str = '000102030405060708090a0b0c0d0e0f';
+  var seed = bytesToString(hexToBytes(seed_str));
+  
+  var key = new BIP32key(seed);
+
+  checkKey(key,
+    "xprv9s21ZrQH143K3QTDL4LXw2F7HEK3wJUD2nW2nRk4stbPy6cq3jPPqjiChkVvvNKmPGJxWUtg6LnF5kejMRNNU3TGtRBeJgk33yuGBxrMPHi",
+    "xpub661MyMwAqRbcFtXgS5sYJABqqG9YLmC4Q1Rdap9gSE8NqtwybGhePY2gZ29ESFjqJoCu1Rupje8YtGqsefD265TMg7usUDFdp6W1EGMcet8");
+
+  var branch = key.ckd(0+BIP32_PRIME);
+
+  checkKey(branch,
+    "xprv9uHRZZhk6KAJC1avXpDAp4MDc3sQKNxDiPvvkX8Br5ngLNv1TxvUxt4cV1rGL5hj6KCesnDYUhd7oWgT11eZG7XnxHrnYeSvkzY7d2bhkJ7",
+    "xpub68Gmy5EdvgibQVfPdqkBBCHxA5htiqg55crXYuXoQRKfDBFA1WEjWgP6LHhwBZeNK1VTsfTFUHCdrfp1bgwQ9xv5ski8PX9rL2dZXvgGDnw");
+
+  var branch2 = branch.ckd(1);
+
+  checkKey(branch2,
+    "xprv9wTYmMFdV23N2TdNG573QoEsfRrWKQgWeibmLntzniatZvR9BmLnvSxqu53Kw1UmYPxLgboyZQaXwTCg8MSY3H2EU4pWcQDnRnrVA1xe8fs",
+    "xpub6ASuArnXKPbfEwhqN6e3mwBcDTgzisQN1wXN9BJcM47sSikHjJf3UFHKkNAWbWMiGj7Wf5uMash7SyYq527Hqck2AxYysAA7xmALppuCkwQ");
+
+  var branch3 = branch2.ckd(2+BIP32_PRIME);
+
+  checkKey(branch3,
+    "xprv9z4pot5VBttmtdRTWfWQmoH1taj2axGVzFqSb8C9xaxKymcFzXBDptWmT7FwuEzG3ryjH4ktypQSAewRiNMjANTtpgP4mLTj34bhnZX7UiM",
+    "xpub6D4BDPcP2GT577Vvch3R8wDkScZWzQzMMUm3PWbmWvVJrZwQY4VUNgqFJPMM3No2dFDFGTsxxpG5uJh7n7epu4trkrX7x7DogT5Uv6fcLW5");
+
+  var branch4 = branch3.ckd(2);
+
+  checkKey(branch4,
+    "xprvA2JDeKCSNNZky6uBCviVfJSKyQ1mDYahRjijr5idH2WwLsEd4Hsb2Tyh8RfQMuPh7f7RtyzTtdrbdqqsunu5Mm3wDvUAKRHSC34sJ7in334",
+    "xpub6FHa3pjLCk84BayeJxFW2SP4XRrFd1JYnxeLeU8EqN3vDfZmbqBqaGJAyiLjTAwm6ZLRQUMv1ZACTj37sR62cfN7fe5JnJ7dh8zL4fiyLHV");
+
+  var branch5 = branch4.ckd(1000000000);
+
+  checkKey(branch5,
+    "xprvA41z7zogVVwxVSgdKUHDy1SKmdb533PjDz7J6N6mV6uS3ze1ai8FHa8kmHScGpWmj4WggLyQjgPie1rFSruoUihUZREPSL39UNdE3BBDu76",
+    "xpub6H1LXWLaKsWFhvm6RVpEL9P4KfRZSW7abD2ttkWP3SSQvnyA8FSVqNTEcYFgJS2UaFcxupHiYkro49S8yGasTvXEYBVPamhGW6cFJodrTHy");
+
+});
+
+test("BIP32 Test vector 2", function () {
+  var seed_str = 'fffcf9f6f3f0edeae7e4e1dedbd8d5d2cfccc9c6c3c0bdbab7b4b1aeaba8a5a29f9c999693908d8a8784817e7b7875726f6c696663605d5a5754514e4b484542';
+  var seed = bytesToString(hexToBytes(seed_str));
+
+  var key = new BIP32key(seed);
+
+  checkKey(key,
+    "xprv9s21ZrQH143K31xYSDQpPDxsXRTUcvj2iNHm5NUtrGiGG5e2DtALGdso3pGz6ssrdK4PFmM8NSpSBHNqPqm55Qn3LqFtT2emdEXVYsCzC2U",
+    "xpub661MyMwAqRbcFW31YEwpkMuc5THy2PSt5bDMsktWQcFF8syAmRUapSCGu8ED9W6oDMSgv6Zz8idoc4a6mr8BDzTJY47LJhkJ8UB7WEGuduB");
+
+  var branch = key.ckd(0);
+
+  checkKey(branch,
+    "xprv9vHkqa6EV4sPZHYqZznhT2NPtPCjKuDKGY38FBWLvgaDx45zo9WQRUT3dKYnjwih2yJD9mkrocEZXo1ex8G81dwSM1fwqWpWkeS3v86pgKt",
+    "xpub69H7F5d8KSRgmmdJg2KhpAK8SR3DjMwAdkxj3ZuxV27CprR9LgpeyGmXUbC6wb7ERfvrnKZjXoUmmDznezpbZb7ap6r1D3tgFxHmwMkQTPH");
+
+  var branch2 = branch.ckd(2147483647+BIP32_PRIME);
+
+  checkKey(branch2,
+    "xprv9wSp6B7kry3Vj9m1zSnLvN3xH8RdsPP1Mh7fAaR7aRLcQMKTR2vidYEeEg2mUCTAwCd6vnxVrcjfy2kRgVsFawNzmjuHc2YmYRmagcEPdU9",
+    "xpub6ASAVgeehLbnwdqV6UKMHVzgqAG8Gr6riv3Fxxpj8ksbH9ebxaEyBLZ85ySDhKiLDBrQSARLq1uNRts8RuJiHjaDMBU4Zn9h8LZNnBC5y4a");
+
+  var branch3 = branch2.ckd(1);
+
+  checkKey(branch3,
+    "xprv9zFnWC6h2cLgpmSA46vutJzBcfJ8yaJGg8cX1e5StJh45BBciYTRXSd25UEPVuesF9yog62tGAQtHjXajPPdbRCHuWS6T8XA2ECKADdw4Ef",
+    "xpub6DF8uhdarytz3FWdA8TvFSvvAh8dP3283MY7p2V4SeE2wyWmG5mg5EwVvmdMVCQcoNJxGoWaU9DCWh89LojfZ537wTfunKau47EL2dhHKon");
+  
+
+  var branch4 = branch3.ckd(2147483646+BIP32_PRIME);
+
+  checkKey(branch4,
+    "xprvA1RpRA33e1JQ7ifknakTFpgNXPmW2YvmhqLQYMmrj4xJXXWYpDPS3xz7iAxn8L39njGVyuoseXzU6rcxFLJ8HFsTjSyQbLYnMpCqE2VbFWc",
+    "xpub6ERApfZwUNrhLCkDtcHTcxd75RbzS1ed54G1LkBUHQVHQKqhMkhgbmJbZRkrgZw4koxb5JaHWkY4ALHY2grBGRjaDMzQLcgJvLJuZZvRcEL");
+
+  var branch5 = branch4.ckd(2);
+
+  checkKey(branch5,
+    "xprvA2nrNbFZABcdryreWet9Ea4LvTJcGsqrMzxHx98MMrotbir7yrKCEXw7nadnHM8Dq38EGfSh6dqA9QWTyefMLEcBYJUuekgW4BYPJcr9E7j",
+    "xpub6FnCn6nSzZAw5Tw7cgR9bi15UV96gLZhjDstkXXxvCLsUXBGXPdSnLFbdpq8p9HmGsApME5hQTZ3emM2rnY5agb9rXpVGyy3bdW6EEgAtqt");
+});