HDWallet: rename derivePrivate to deriveHardened

src/hdwallet.js

@@ -273,7 +273,7 @@ HDWallet.prototype.derive = function(index) {
   return hd
 }
 
-HDWallet.prototype.derivePrivate = function(index) {
+HDWallet.prototype.deriveHardened = function(index) {
   // Only derives hardened private keys by default
   return this.derive(index + HDWallet.HIGHEST_BIT)
 }

src/wallet.js

@@ -31,9 +31,9 @@ function Wallet(seed, network) {
     seed = seed || new Buffer(rng(32))
     masterkey = HDNode.fromSeedBuffer(seed, network)
 
-    // HD first-level child derivation method should be private
+    // HD first-level child derivation method should be hardened
     // See https://bitcointalk.org/index.php?topic=405179.msg4415254#msg4415254
-    accountZero = masterkey.derivePrivate(0)
+    accountZero = masterkey.deriveHardened(0)
     externalAccount = accountZero.derive(0)
     internalAccount = accountZero.derive(1)
 

test/hdwallet.js

@@ -227,7 +227,7 @@ describe('HDWallet', function() {
       f.children.forEach(function(c, i) {
         it(c.description + ' from ' + f.master.fingerprint, function() {
           if (c.hardened) {
-            hd = hd.derivePrivate(c.m)
+            hd = hd.deriveHardened(c.m)
 
           } else {
             hd = hd.derive(c.m)
@@ -255,7 +255,7 @@ describe('HDWallet', function() {
       var parent = HDWallet.fromBase58(f.master.base58)
 
       assert.throws(function() {
-        parent.derivePrivate(c.m)
+        parent.deriveHardened(c.m)
       }, /Could not derive hardened child key/)
     })
   })