public void Given_An_Incorrect_Key_Identifier_When_Decryption_Is_Attempted_Then_An_Exception_Is_Thrown()
{
var data = Encoding.UTF8.GetBytes(nameof(FixedKeyEncryptionproviderTests));
var key = GenerateKeyBytes();
var encryptionProviderWithDifferentKey = new FixedKeyEncryptionProvider(key);
var secret = sut.Encrypt(data);
Assert.Throws <KeyIdentifierMismatchException>(() => encryptionProviderWithDifferentKey.Decrypt(secret));
}
public void Given_Two_Keys_When_Encrypted_Then_The_KeyIdentifier_Is_Unique_For_Each_Secret()
{
var data = Encoding.UTF8.GetBytes(nameof(FixedKeyEncryptionproviderTests));
var provider1 = new FixedKeyEncryptionProvider(GenerateKeyBytes());
var provider2 = new FixedKeyEncryptionProvider(GenerateKeyBytes());
var secret1 = provider1.Encrypt(data);
var secret2 = provider2.Encrypt(data);
secret1.KeyIdentifier.Should().NotBe(secret2.KeyIdentifier);
}
public void Given_An_Incorrect_Key_When_Decryption_Is_Attempted_Then_Decryption_Does_Not_Return_The_Unencrypted_Data()
{
var data = Encoding.UTF8.GetBytes(nameof(FixedKeyEncryptionproviderTests));
var secret = sut.Encrypt(data);
// make a new key appear to be the same by using the same identifier
var incorrectKey = new Key(GenerateKeyBytes(), secret.KeyIdentifier);
var encryptionProviderWithDifferentKey = new FixedKeyEncryptionProvider(incorrectKey);
encryptionProviderWithDifferentKey.Decrypt(secret).Should().NotBeEquivalentTo(data);
}
public FixedKeyEncryptionproviderTests()
{
sut = new FixedKeyEncryptionProvider(GenerateKeyBytes());
}
