public bool DeriveKeysServer()
{
if (publicPreKey == null || publicEphemeralKey == null)
{
//return false;
throw new EncryptionKeyIsMissingException();
}
// ephermeral And Public Pre Key
KeyPair ePPK = new KeyPair();
// ephermeral and Public One Time Key
KeyPair ePOTK = new KeyPair();
// own Pre Key and Public Pre Key
KeyPair oPKPPK = new KeyPair();
// own Pre Key and Public One Time Key
KeyPair oPKPOTK = new KeyPair();
if (oneTimeKeyPair != null)
{
NativeLibsodium.crypto_kx_server_session_keys(ePOTK.publicKey, ePOTK.secretKey, oneTimeKeyPair.publicKey, oneTimeKeyPair.secretKey, publicEphemeralKey);
NativeLibsodium.crypto_kx_server_session_keys(oPKPOTK.publicKey, oPKPOTK.secretKey, oneTimeKeyPair.publicKey, oneTimeKeyPair.secretKey, publicPreKey);
}
NativeLibsodium.crypto_kx_server_session_keys(ePPK.publicKey, ePPK.secretKey, ownPreKeyPair.publicKey, ownPreKeyPair.secretKey, publicEphemeralKey);
NativeLibsodium.crypto_kx_server_session_keys(oPKPPK.publicKey, oPKPPK.secretKey, ownPreKeyPair.publicKey, ownPreKeyPair.secretKey, publicPreKey);
DeriveSessionKeys(ePPK, oPKPPK, oPKPOTK, ePOTK);
return(true);
}
public void ComputeKeysServer()
{
NativeLibsodium.crypto_kx_server_session_keys(sessionReceiveKey, sessionSendKey, ownIdentKeyPair.publicKey, ownIdentKeyPair.secretKey, publicIdentKey);
}
public override void DeriveServerSessionKeys(byte[] data, KeyPair ownKeyPair)
{
NativeLibsodium.crypto_kx_server_session_keys(sessionSendKey, sessionReceiveKey, ownKeyPair.publicKey, ownKeyPair.secretKey, data);
}