/** Create a fulfillment given a secret key and the message */
Ed25519::Ed25519 (
SecretKey const& secretKey,
Slice message)
{
// First derive the public key, and place it in the
// payload:
ed25519_publickey (
secretKey.data(),
payload_.data());
ed25519_sign (
message.data(),
message.size(),
secretKey.data(),
payload_.data(),
payload_.data() + pubkey_size_);
}
Ed25519::Ed25519 (
SecretKey const& secretKey,
PublicKey const& publicKey,
Slice message)
{
if (publicKeyType (publicKey) != KeyType::ed25519)
LogicError ("An Ed25519 public key is required.");
// When PublicKey wraps an Ed25519 key it prefixes
// the key itself with a 0xED byte. We carefully
// skip that byte.
std::memcpy (
payload_.data(),
publicKey.data() + 1,
publicKey.size() - 1);
// Now sign:
ed25519_sign (
message.data(),
message.size(),
secretKey.data(),
payload_.data(),
payload_.data() + pubkey_size_);
}
