public void EncryptedData_DecryptWithPublicKey_IsNotSuccessfullyDecrypted()
{
// Arrange
var message = "my super secret message";
var key = AsymmetricEncryption.GenerateKey(32);
var encryptedData = AsymmetricEncryption.Encrypt(message, key.PublicKey);
// Act / Assert
Assert.ThrowsAny <System.Security.Cryptography.CryptographicException>(() => { AsymmetricEncryption.DecryptValue(encryptedData.EncryptedData, key.PublicKey); });
}
public void EncryptedData_WithKey_IsSuccessfullyDecrypted()
{
// Arrange
var message = "my super secret message";
var keyPair = AsymmetricEncryption.GenerateKey(32);
// Act
var encryptedData = HybridEncryption.Encrypt(message, keyPair.PublicKey);
var decryptedData = HybridEncryption.DecryptValue(encryptedData.EncryptedData, keyPair.PrivateKey, encryptedData.EncryptedKey, encryptedData.InitializationVector);
// Assert
Assert.Equal(message, decryptedData);
Assert.NotEqual(encryptedData.EncryptedData, System.Text.Encoding.UTF8.GetBytes(message));
}
public void EncryptedData_WithModifiedHMAC_IsNotSuccessfullyDecrypted()
{
// Arrange
var message = "my super secret message";
var keyPair = AsymmetricEncryption.GenerateKey(32);
var encryptedData = HybridEncryption.Encrypt(message, keyPair.PublicKey);
encryptedData.Hmac[1] = byte.MaxValue;
// Act
var exception = Assert.ThrowsAny <System.Security.Cryptography.CryptographicException>(() => { HybridEncryption.DecryptValue(encryptedData.EncryptedData, keyPair.PrivateKey, encryptedData.EncryptedKey, encryptedData.InitializationVector, encryptedData.Hmac); });
// Assert
Assert.Contains("HMAC for decryption does not match encrypted packet", exception.Message);
}