text: 'use strict'
  
  var KEYS = [
    // generic
    /passw(or)?d/i,
    /^pw$/,
    /^pass$/i,
    /secret/i,
    /token/i,
    /api[-._]?key/i,
    /session[-._]?id/i,
  
    // specific
    /^connect\.sid$/ // https://github.com/expressjs/session
  ]
  
  var VALUES = [
    /^\d{4}[- ]?\d{4}[- ]?\d{4}[- ]?\d{4}$/ // credit card number
  ]
  
  exports.key = key
  exports.value = value
  
  function key (str) {
    return KEYS.some(function (regex) {
      return regex.test(str)
    })
  }
  
  function value (str) {
    return VALUES.some(function (regex) {
      return regex.test(str)
    })
  }
  