SOURCE

// 密钥 
const k = '12ABC'

// 输入手机号
const ccc = phoneEncode('15399907331')

console.log('加密',ccc)
console.log('解密',phoneDecode(ccc))
// 手机号加密
function phoneEncode(phone){
  const a = phone.substring(0,3)
  const b = phone.substring(3,7)
  const c = phone.substring(7)

  const code = `${btoa(~(a^k))}_${btoa(~(b^k))}_${btoa(~(c^k))}`
  return encodeURIComponent(code)
}

// 手机号解密
function phoneDecode(str){
  let phone = ''
  try{
      const pp = decodeURIComponent(str)
      const[a,b,c] = pp.split('_')
      const a1 = (~atob(a)^k)
      const b1 = (~atob(b)^k)
      const c1 = (~atob(c)^k)
      phone = String(a1).padStart(3,'0') + String(b1).padStart(4,'0') + String(c1).padStart(4,'0')
    }catch(e){
      console.error('解密失败',e.message)
  }
  return phone
}