DhPkcs3Engine dhEngine = DhPkcs3Engine.fromGroup(18);
DhPkcs3Engine otherDhEngine = DhPkcs3Engine.fromGroup(18);

DhKeyPair keyPair = dhEngine.generateKeyPair();
DhKeyPair otherKeyPair = otherDhEngine.generateKeyPair();

print('Public Key: ${keyPair.publicKey}');
print('Private Key: ${keyPair.privateKey}');
print('Other public Key: ${otherKeyPair.publicKey}');
print('Other private Key: ${otherKeyPair.privateKey}');


print('Secret Key: ${dhEngine.computeSecretKey(otherKeyPair.publicKey)}');
print('Other secret Key: ${otherDhEngine.computeSecretKey(keyPair.publicKey)}');