derivePK function

B64 derivePK(
  1. B64 secretKey
)

Implementation

B64 derivePK(B64 secretKey) {
  var sk = secretKey.decode();
  if (sk.length < ed25519.PrivateKeySize) {
    throw ExInvalidSK;
  }
  return B64.encode(sk.sublist(32).toList());
}