#External Hashers — Recipes

#Whirlpool via CDN (512-bit, hex output)

const signer = new UldaSign({
  sign: {
    N: 5, mode: 'X',
    hash: 'WHIRLPOOL',
    originSize: 512,              // equals digest size in X-mode
    cdn: 'https://cdn.example.com/whirlpool.js',
    output: 'hex',
    size: 512
  }
});

#BLAKE3 via direct function (bytes output)

import { blake3 } from '@noble/hashes/blake3';

const signer = new UldaSign({
  fmt : { export: 'bytes' },
  sign: {
    N: 8, mode: 'S',
    hash: 'B3FAST',
    originSize: 256,
    func  : async u8 => blake3(u8),   // returns Uint8Array
    output: 'bytes',
    size  : 256
  }
});

#Bulk map with several candidates

new UldaSign({
  sign: { hash: 'FALCON-256', originSize: 256 },
  externalHashers: {
    'FALCON-256': {
      cdn: 'https://cdn.example.com/falcon256.js',
      output: 'bytes',
      size: 256
    },
    'SPHINCS-SHAKE': {
      cdn: 'https://cdn.example.com/sphincs-shake.js',
      output: 'bytes',
      size: 256
    },
    'KECCAK-384': {
      func  : async u8 => keccak384(u8),
      output: 'hex',
      size  : 384
    }
  }
});