deriveKeyPair function

KeyPair deriveKeyPair(String seed, int index, { String curve = 'ed25519', bool isSeedHexa = true, int originId = softwareId, })

Generate a keypair using a derivation function with a seed and an index. Each keys is prepending with a curve identification.

• seed : Keypair derivation seed
• index : Number to identify the order of keys to generate
• curve : Elliptic curve to use ("P256", "secp256k1", "ed25519")
• originId : Origin id of the public key (0, 1, 2) = ("on chain wallet", "software", "tpm")

Implementation

KeyPair deriveKeyPair(
  String seed,
  int index, {
  String curve = 'ed25519',
  bool isSeedHexa = true,
  int originId = softwareId,
}) {
  if (index < 0) {
    throw "index' must be a positive number";
  }

  final pvBuf = derivePrivateKey(seed, index, isSeedHexa: isSeedHexa);
  return generateDeterministicKeyPair(pvBuf, curve, originId);
}