Bip39.test.scala

import ecc.*
import Secp256k1.*
import scodec.bits.*
import bips.*

class Bip39Test extends munit.FunSuite {

  test("read wordlist from file") {
    assertEquals(Bip39.words.size, 2048)
    assertEquals(Bip39.words(0), "abandon")
  }

  test("encode entropy to mnemonic sentence") {
    assertEquals(
      Bip39.toMnemonics(ByteVector.fill(16)(0)),
      List.fill(11)("abandon") :+ "about"
    )
    assertEquals(
      Bip39.toMnemonics(ByteVector.fill(32)(0)),
      List.fill(23)("abandon") :+ "art"
    )
  }

  test("decode mnemonic to entropy") {
    assertEquals(
      Bip39.toEntropy(List.fill(11)("abandon") :+ "about"),
      ByteVector.fill(16)(0)
    )
    assertEquals(
      Bip39.toEntropy(List.fill(23)("abandon") :+ "art"),
      ByteVector.fill(32)(0)
    )
  }

  // test vectors from https://github.com/trezor/python-mnemonic/blob/master/vectors.json
  // passphrase for all tests is "TREZOR"
  test("create BIP32-compatible seed") {
    val mnemonics = List.fill(11)("abandon") :+ "about"
    val entropy = Bip39.toEntropy(mnemonics)
    assertEquals(
      Bip39.toSeed(mnemonics,"TREZOR"),
      ByteVector.fromValidHex("c55257c360c07c72029aebc1b53c05ed0362ada38ead3e3e9efa3708e53495531f09a6987599d18264c1e1c92f2cf141630c7a3c4ab7c81b2f001698e7463b04")
    )
    // now check with empty password (from https://iancoleman.io/bip39 tool)
    assertEquals(
      Bip39.toSeed(mnemonics,""),
      ByteVector.fromValidHex("5eb00bbddcf069084889a8ab9155568165f5c453ccb85e70811aaed6f6da5fc19a5ac40b389cd370d086206dec8aa6c43daea6690f20ad3d8d48b2d2ce9e38e4")
    )
  }
}