Initial Commit

package.json

@@ -0,0 +1,14 @@
+{
+  "name": "ipfs-peer-id",
+  "version": "0.0.0",
+  "description": "IPFS Peer Id implementation in Node.js",
+  "main": "src/index.js",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "keywords": [
+    "IPFS"
+  ],
+  "author": "David Dias <mail@daviddias.me>",
+  "license": "MIT"
+}

src/index.js

@@ -0,0 +1,79 @@
+/*
+ * Id is an object representation of a peer Id. a peer Id is a multihash
+ */
+
+var multihashing = require('multihashing')
+var base58 = require('bs58')
+var crypto = require('crypto')
+
+exports = module.exports = Id
+
+function Id (id, pubKey, privKey) {
+  var self = this
+
+  if (!(self instanceof Id)) {
+    throw new Error('Id must be called with new')
+  }
+
+  self.privKey = privKey
+  self.pubKey = pubKey
+  self.id = id // multihash - sha256 - buffer
+
+  // pretty print
+
+  self.toPrint = function () {
+    return {
+      id: id.toHexString(),
+      privKey: privKey.toString('hex'),
+      pubKey: pubKey.toString('hex')
+    }
+  }
+
+  // encode/decode functions
+
+  self.toHexString = function () {
+    return self.id.toString('hex')
+  }
+
+  self.toBytes = function () {
+    return self.id
+  }
+
+  self.toB58String = function () {
+    return base58.encode(self.id)
+  }
+
+}
+
+// generation
+
+exports.create = function () {
+  var ecdh = crypto.createECDH('secp256k1')
+  ecdh.generateKeys()
+
+  var mhId = multihashing(ecdh.getPublicKey(), 'sha2-256')
+
+  return new Id(mhId, ecdh.getPrivateKey(), ecdh.getPublicKey())
+}
+
+exports.createFromHexString = function (str) {
+  return new Id(new Buffer(str), 'hex')
+}
+
+exports.createFromBytes = function (buf) {
+  return new Id(buf)
+}
+
+exports.createFromB58String = function (str) {
+  return new Id(new Buffer(base58.decode(str)))
+}
+
+exports.createFromPubKey = function (pubKey) {
+  var mhId = multihashing(pubKey, 'sha2-256')
+
+  return new Id(mhId, null, pubKey)
+}
+
+exports.createFromPrivKey = function () {
+  // TODO(daviddias) derive PubKey from priv
+}