all: rename D to d as per SEC convention

src/ecdsa.js

@@ -4,12 +4,12 @@ var crypto = require('./crypto')
 var BigInteger = require('bigi')
 var ECPointFp = require('./ec').ECPointFp
 
-function deterministicGenerateK(ecparams, hash, D) {
+function deterministicGenerateK(ecparams, hash, d) {
   assert(Buffer.isBuffer(hash), 'Hash must be a Buffer, not ' + hash)
   assert.equal(hash.length, 32, 'Hash must be 256 bit')
-  assert(D instanceof BigInteger, 'Private key must be a BigInteger')
+  assert(d instanceof BigInteger, 'Private key must be a BigInteger')
 
-  var x = D.toBuffer(32)
+  var x = d.toBuffer(32)
   var k = new Buffer(32)
   var v = new Buffer(32)
   k.fill(0)
@@ -30,8 +30,8 @@ function deterministicGenerateK(ecparams, hash, D) {
   return kB
 }
 
-function sign(ecparams, hash, D) {
-  var k = deterministicGenerateK(ecparams, hash, D)
+function sign(ecparams, hash, d) {
+  var k = deterministicGenerateK(ecparams, hash, d)
 
   var n = ecparams.getN()
   var G = ecparams.getG()
@@ -41,7 +41,7 @@ function sign(ecparams, hash, D) {
   var r = Q.getX().toBigInteger().mod(n)
   assert.notEqual(r.signum(), 0, 'Invalid R value')
 
-  var s = k.modInverse(n).multiply(e.add(D.multiply(r))).mod(n)
+  var s = k.modInverse(n).multiply(e.add(d.multiply(r))).mod(n)
   assert.notEqual(s.signum(), 0, 'Invalid S value')
 
   var N_OVER_TWO = n.shiftRight(1)

src/eckey.js

@@ -10,13 +10,13 @@ var ECPubKey = require('./ecpubkey')
 var sec = require('./sec')
 var ecparams = sec('secp256k1')
 
-function ECKey(D, compressed) {
-  assert(D.signum() > 0, 'Private key must be greater than 0')
-  assert(D.compareTo(ecparams.getN()) < 0, 'Private key must be less than the curve order')
+function ECKey(d, compressed) {
+  assert(d.signum() > 0, 'Private key must be greater than 0')
+  assert(d.compareTo(ecparams.getN()) < 0, 'Private key must be less than the curve order')
 
-  var Q = ecparams.getG().multiply(D)
+  var Q = ecparams.getG().multiply(d)
 
-  this.D = D
+  this.d = d
   this.pub = new ECPubKey(Q, compressed)
 }
 
@@ -38,18 +38,18 @@ ECKey.fromWIF = function(string) {
 
   assert.equal(payload.length, 32, 'Invalid WIF payload length')
 
-  var D = BigInteger.fromBuffer(payload)
-  return new ECKey(D, compressed)
+  var d = BigInteger.fromBuffer(payload)
+  return new ECKey(d, compressed)
 }
 
 ECKey.makeRandom = function(compressed, rng) {
   rng = rng || secureRandom
 
   var buffer = new Buffer(rng(32))
-  var D = BigInteger.fromBuffer(buffer)
-  D = D.mod(ecparams.getN())
+  var d = BigInteger.fromBuffer(buffer)
+  d = d.mod(ecparams.getN())
 
-  return new ECKey(D, compressed)
+  return new ECKey(d, compressed)
 }
 
 // Export functions
@@ -60,7 +60,7 @@ ECKey.prototype.toWIF = function(network) {
   var buffer = new Buffer(bufferLen)
 
   buffer.writeUInt8(network.wif, 0)
-  this.D.toBuffer(32).copy(buffer, 1)
+  this.d.toBuffer(32).copy(buffer, 1)
 
   if (this.pub.compressed) {
     buffer.writeUInt8(0x01, 33)
@@ -71,7 +71,7 @@ ECKey.prototype.toWIF = function(network) {
 
 // Operations
 ECKey.prototype.sign = function(hash) {
-  return ecdsa.sign(ecparams, hash, this.D)
+  return ecdsa.sign(ecparams, hash, this.d)
 }
 
 module.exports = ECKey

src/hdnode.js

@@ -174,7 +174,7 @@ HDNode.prototype.toBuffer = function(isPrivate) {
 
     // 0x00 + k for private keys
     buffer.writeUInt8(0, 45)
-    this.privKey.D.toBuffer(32).copy(buffer, 46)
+    this.privKey.d.toBuffer(32).copy(buffer, 46)
   } else {
 
     // X9.62 encoding for public keys
@@ -202,7 +202,7 @@ HDNode.prototype.derive = function(index) {
 
     // data = 0x00 || ser256(kpar) || ser32(index)
     data = Buffer.concat([
-      this.privKey.D.toBuffer(33),
+      this.privKey.d.toBuffer(33),
       indexBuffer
     ])
 
@@ -231,7 +231,7 @@ HDNode.prototype.derive = function(index) {
   var hd
   if (this.privKey) {
     // ki = parse256(IL) + kpar (mod n)
-    var ki = pIL.add(this.privKey.D).mod(ecparams.getN())
+    var ki = pIL.add(this.privKey.d).mod(ecparams.getN())
 
     // In case ki == 0, proceed with the next value for i
     if (ki.signum() === 0) {