public void NullParameterTest()
{
var keyPair = new KeyPair(new PrivateSecretKey(K_PRI_ALICE), new PublicKey(K_PUB_ALICE));
Assert.ThrowsException <ArgumentNullException>(() => new SharedLocker(null, null));
Assert.ThrowsException <ArgumentNullException>(() => new SharedLocker(keyPair.Public, null));
Assert.ThrowsException <ArgumentNullException>(() => new SharedLocker(null, keyPair.Secret));
var sharedLocker = new SharedLocker(keyPair.Public, keyPair.Secret);
Assert.ThrowsException <ArgumentNullException>(() => sharedLocker.Lock(str: null));
Assert.ThrowsException <ArgumentNullException>(() => sharedLocker.Lock(str: ""));
Assert.ThrowsException <ArgumentNullException>(() => sharedLocker.Lock(data: null));
Assert.ThrowsException <ArgumentNullException>(() => sharedLocker.Lock(data: new byte[0]));
}
public void RoundTripTest_WrongKeys()
{
var AliceKeys = new KeyPair(new PrivateSecretKey(K_PRI_ALICE), new PublicKey(K_PUB_ALICE));
var BobKeys = new KeyPair(new PrivateSecretKey(K_PRI_BOB), new PublicKey(K_PUB_BOB));
var locker = new SharedLocker(BobKeys.Public, AliceKeys.Secret);
var locked = locker.Lock(MESSAGE);
//Try to decrypt with alice key
Assert.ThrowsException <CryptographicException>(()
=> locked.UnlockString(AliceKeys.Public, AliceKeys.Secret));
}
public void RoundTripTest()
{
var AliceKeys = new KeyPair(new PrivateSecretKey(K_PRI_ALICE), new PublicKey(K_PUB_ALICE));
var BobKeys = new KeyPair(new PrivateSecretKey(K_PRI_BOB), new PublicKey(K_PUB_BOB));
var locker = new SharedLocker(BobKeys.Public, AliceKeys.Secret);
var locked = locker.Lock(MESSAGE);
var unlocked = locked.UnlockString(AliceKeys.Public, BobKeys.Secret);
Assert.AreEqual(MESSAGE, unlocked);
}
public void RoundTripTest_Tampered()
{
var AliceKeys = new KeyPair(new PrivateSecretKey(K_PRI_ALICE), new PublicKey(K_PUB_ALICE));
var BobKeys = new KeyPair(new PrivateSecretKey(K_PRI_BOB), new PublicKey(K_PUB_BOB));
var locker = new SharedLocker(BobKeys.Public, AliceKeys.Secret);
var locked = locker.Lock(MESSAGE);
for (int i = 0; i < 5; i++)
{
locked.Cipher[i] = 0;
}
Assert.ThrowsException <CryptographicException>(()
=> locked.UnlockString(AliceKeys.Public, BobKeys.Secret));
}