newChannelKeypair function
Fresh channel X25519 keypair — generated by the channel's first user.
Implementation
Future<ChannelKeys> newChannelKeypair() async {
final pair = await X25519().newKeyPair();
final priv = await pair.extractPrivateKeyBytes();
final pub = await pair.extractPublicKey();
return ChannelKeys(pub: base64Encode(pub.bytes), priv: base64Encode(priv));
}