@temple-wallet/wallet-address-validator/src/tezos_validator.js

Wallet address validator for Bitcoin and other Altcoins.

const bs58check = require('bs58check');

const Prefix = {
  TZ1: 'tz1',
  TZ2: 'tz2',
  TZ3: 'tz3',
  TZ4: 'tz4',
  KT: 'KT',
  KT1: 'KT1',

  EDSK2: 'edsk2',
  SPSK: 'spsk',
  P2SK: 'p2sk',

  EDPK: 'edpk',
  SPPK: 'sppk',
  P2PK: 'p2pk',
  BLPK: 'BLpk',

  EDESK: 'edesk',
  SPESK: 'spesk',
  P2ESK: 'p2esk',

  EDSK: 'edsk',
  EDSIG: 'edsig',
  SPSIG: 'spsig',
  P2SIG: 'p2sig',
  SIG: 'sig',

  NET: 'Net',
  NCE: 'nce',
  B: 'B',
  O: 'o',
  LO: 'Lo',
  LLO: 'LLo',
  P: 'P',
  CO: 'Co',
  ID: 'id',

  EXPR: 'expr',
  TZ: 'TZ',

  VH: 'vh', // block_payload_hash

  SASK: 'sask', // sapling_spending_key
  ZET1: 'zet1', // sapling_address

  //rollups
  TXR1: 'txr1',
  TXI: 'txi',
  TXM: 'txm',
  TXC: 'txc',
  TXMR: 'txmr',
  TXRL: 'txM',
  TXW: 'txw',

  SR1: 'sr1',
  SRC1: 'src1'
};

const prefix = {
  [Prefix.TZ1]: new Uint8Array([6, 161, 159]),
  [Prefix.TZ2]: new Uint8Array([6, 161, 161]),
  [Prefix.TZ3]: new Uint8Array([6, 161, 164]),
  [Prefix.TZ4]: new Uint8Array([6, 161, 166]),
  [Prefix.KT]: new Uint8Array([2, 90, 121]),
  [Prefix.KT1]: new Uint8Array([2, 90, 121]),

  [Prefix.EDSK]: new Uint8Array([43, 246, 78, 7]),
  [Prefix.EDSK2]: new Uint8Array([13, 15, 58, 7]),
  [Prefix.SPSK]: new Uint8Array([17, 162, 224, 201]),
  [Prefix.P2SK]: new Uint8Array([16, 81, 238, 189]),

  [Prefix.EDPK]: new Uint8Array([13, 15, 37, 217]),
  [Prefix.SPPK]: new Uint8Array([3, 254, 226, 86]),
  [Prefix.P2PK]: new Uint8Array([3, 178, 139, 127]),
  [Prefix.BLPK]: new Uint8Array([6, 149, 135, 204]),

  [Prefix.EDESK]: new Uint8Array([7, 90, 60, 179, 41]),
  [Prefix.SPESK]: new Uint8Array([0x09, 0xed, 0xf1, 0xae, 0x96]),
  [Prefix.P2ESK]: new Uint8Array([0x09, 0x30, 0x39, 0x73, 0xab]),

  [Prefix.EDSIG]: new Uint8Array([9, 245, 205, 134, 18]),
  [Prefix.SPSIG]: new Uint8Array([13, 115, 101, 19, 63]),
  [Prefix.P2SIG]: new Uint8Array([54, 240, 44, 52]),
  [Prefix.SIG]: new Uint8Array([4, 130, 43]),

  [Prefix.NET]: new Uint8Array([87, 82, 0]),
  [Prefix.NCE]: new Uint8Array([69, 220, 169]),
  [Prefix.B]: new Uint8Array([1, 52]),
  [Prefix.O]: new Uint8Array([5, 116]),
  [Prefix.LO]: new Uint8Array([133, 233]),
  [Prefix.LLO]: new Uint8Array([29, 159, 109]),
  [Prefix.P]: new Uint8Array([2, 170]),
  [Prefix.CO]: new Uint8Array([79, 179]),
  [Prefix.ID]: new Uint8Array([153, 103]),

  [Prefix.EXPR]: new Uint8Array([13, 44, 64, 27]),
  // Legacy prefix
  [Prefix.TZ]: new Uint8Array([2, 90, 121]),

  [Prefix.VH]: new Uint8Array([1, 106, 242]),
  [Prefix.SASK]: new Uint8Array([11, 237, 20, 92]),
  [Prefix.ZET1]: new Uint8Array([18, 71, 40, 223]),

  [Prefix.TXR1]: new Uint8Array([1, 128, 120, 31]),
  [Prefix.TXI]: new Uint8Array([79, 148, 196]),
  [Prefix.TXM]: new Uint8Array([79, 149, 30]),
  [Prefix.TXC]: new Uint8Array([79, 148, 17]),
  [Prefix.TXMR]: new Uint8Array([18, 7, 206, 87]),
  [Prefix.TXRL]: new Uint8Array([79, 146, 82]),
  [Prefix.TXW]: new Uint8Array([79, 150, 72]),

  [Prefix.SR1]: new Uint8Array([6, 124, 117]),
  [Prefix.SRC1]: new Uint8Array([17, 165, 134, 138]),
};

const prefixLength = {
  [Prefix.TZ1]: 20,
  [Prefix.TZ2]: 20,
  [Prefix.TZ3]: 20,
  [Prefix.TZ4]: 20,
  [Prefix.KT]: 20,
  [Prefix.KT1]: 20,

  [Prefix.EDPK]: 32,
  [Prefix.SPPK]: 33,
  [Prefix.P2PK]: 33,
  //working with value in comment for base58.ml line 445 but not consistent with the three above
  [Prefix.BLPK]: 48,

  [Prefix.EDSIG]: 64,
  [Prefix.SPSIG]: 64,
  [Prefix.P2SIG]: 64,
  [Prefix.SIG]: 64,
  [Prefix.NET]: 4,
  [Prefix.B]: 32,
  [Prefix.P]: 32,
  [Prefix.O]: 32,
  [Prefix.VH]: 32,
  [Prefix.SASK]: 169,
  [Prefix.ZET1]: 43,
  [Prefix.TXR1]: 20,
  [Prefix.TXI]: 32,
  [Prefix.TXM]: 32,
  [Prefix.TXC]: 32,
  [Prefix.TXMR]: 32,
  [Prefix.TXRL]: 32,
  [Prefix.TXW]: 32,

  [Prefix.SR1]: 20,
  [Prefix.SRC1]: 32,
};

function isValidPrefix(value) {
  if (typeof value !== 'string') {
    return false;
  }

  return value in prefix;
}

function validatePrefixedValue(value, prefixes) {
  const match = new RegExp(`^(${prefixes.join('|')})`).exec(value);
  if (!match || match.length === 0) {
    return false;
  }

  const prefixKey = match[0];

  if (!isValidPrefix(prefixKey)) {
    return false;
  }

  // Check whether annotation exist before starting validation
  if (value.includes('%')) {
    value = value.split('%')[0];
  }

  const kt1Regex = /^(KT1\w{33})$/;
  if (!kt1Regex.test(value) && prefixKey === 'KT1') {
    return false;
  }

  let decoded = bs58check.decodeUnsafe(value);
  if (!decoded) {
    return false;
  }

  decoded = decoded.slice(prefix[prefixKey].length);
  if (decoded.length !== prefixLength[prefixKey]) {
    return false;
  }

  return true;
}

const implicitPrefix = ['tz1', 'tz2', 'tz3', 'tz4'];
const contractPrefix = ['KT1', 'txr1'];
const smartRollupPrefix = ['sr1'];

module.exports = {
    isValidAddress: function (address) {
      return validatePrefixedValue(address, [...implicitPrefix, ...contractPrefix, ...smartRollupPrefix]);
    }
};