ERC: Safer Ethereum Address Format - Generator tool

safer_ethereum_address.js

var ethUtil = require('ethereumjs-util')

var fixtures = [
  {
    name: 'ethbase-1        ',
    alphabet: 'abcdefghjklmnopqrstvwxyz',
    magic: [ ]
  },
  {
    name: 'ethbase-2        ',
    alphabet: '0123456789abcdefhklmnorstuwxz',
    magic: [ ]
  },
  {
    name: 'ethbase-3        ',
    alphabet: '123456789abcdefhklmnorstuwxz',
    magic: [ ]
  },
  {
    name: 'ethbase-4        ',
    alphabet: 'ABCDEFGHJKLMNOPQRSTVWXYZ',
    magic: [ ]
  },
  {
    name: 'ethbase-5        ',
    alphabet: '987654321',
    magic: [ ]
  },
  {
    name: 'base-36          ',
    alphabet: '0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ',
    magic: [ ]
  },
  {
    name: 'base-55          ',
    alphabet: '123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghjkmnpqrstuwxyz',
    magic: [ ]
  },
  {
    name: 'base-58          ',
    alphabet: '123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz',
    magic: [ ]
  },
  {
    name: 'rfc4648 base32   ',
    alphabet: 'ABCDEFGHIJKLMNOPQRSTUVWXYZ234567',
    magic: [ ]
  },
  {
    name: 'z-base-32        ',
    alphabet: 'ybndrfg8ejkmcpqxot1uwisza345h769',
    magic: [ ]
  },
  {
    name: 'crockford base-32',
    alphabet: '0123456789ABCDEFGHJKMNPQRSTVWXYZ',
    magic: [ ]
  },
  {
    name: 'base32hex        ',
    alphabet: '0123456789ABCDEFGHIJKLMNOPQRSTUV',
    magic: [ ]
  },
  {
    name: 'nintendo base-32 ',
    alphabet: '0123456789BCDFGHJKLMNPQRSTVWXYZ',
    magic: [ ]
  }
]

function encode(address) {
  console.log('address          ', address.toString('hex'))
  for (var i = 0; i < fixtures.length; i++) {
    var fixture = fixtures[i]
    var bs = require('base-x')(fixture.alphabet)
    
    var flag = 1
    var checksum = ethUtil.sha3(address).slice(-4)
    var content
    if (fixture.magic.length > 0)
      content = Buffer.concat([ new Buffer(fixture.magic), new Buffer([ flag ]), address, checksum ])
    else
      content = Buffer.concat([ new Buffer([ flag ]), address, checksum ])

    console.log(fixture.name, bs.encode(content))
  }
}

var crypto = require('crypto')

for (var i = 0; i < 2; i++) {
  encode(crypto.randomBytes(20))
  console.log('--')
}

for (var i = 0; i < 2; i++) {
  encode(Buffer.concat([ new Buffer([0]), crypto.randomBytes(19)])) // 'ICAP direct'
  console.log('--')
}