hulawho/src/modules/crypto_primitives.js

hulawho api

var crypto = require('crypto')
var scrypt = require('scrypt')

exports.sha256 = function(data) {
  var hash = crypto.createHash('sha256')
  hash.update(data)
  return hash.digest('hex')
}

exports.generateKdf = function(data, callback) {
  scrypt.params(0.1, function(err, scryptParameters) {
    scrypt.kdf(data, scryptParameters, function(err, res){
      if(err) {
        callback(err)
        return
      }

      callback(null, res.toString('hex'))
    })
  })
}

exports.verifyKdf = function(kdf, data, callback) {
  scrypt.verifyKdf(new Buffer(kdf, 'hex'), data, function(err, res){
    if(err) {
      callback(err)
      return
    }

    callback(null, res)
  })
}

exports.generatePasswordResetCode = exports.generateLeagueCode = function(callback) {
  crypto.randomBytes(32, function(err, res) {
    if(err) {
      callback(err)
      return
    }

    var hexString = res.toString('hex')

    callback(null, hexString)
  })
}