public void Encrypt_returns_correct_value()
{
foreach (var i in Rfc3610TestCases)
{
var aes = new SjclAes(i.Key);
var ciphertext = SjclCcm.Encrypt(aes, i.Plaintext, i.Iv, i.Adata, i.TagLength);
Assert.That(ciphertext, Is.EqualTo(i.Ciphertext));
}
}
public void Encrypt_throws_on_too_short_iv()
{
var aes = new SjclAes(new byte[16]);
for (var i = 0; i < 7; ++i)
{
Assert.That(() => SjclCcm.Encrypt(aes, new byte[1], new byte[i], new byte[0], 8),
Throws.TypeOf <CryptoException>()
.And.Message.EqualTo("IV must be at least 7 bytes long"));
}
}
public void Encrypt_throws_on_too_short_iv()
{
var aes = new SjclAes(new byte[16]);
for (var i = 0; i < 7; ++i)
{
var e = Assert.Throws <CryptoException>(
() => SjclCcm.Encrypt(aes, new byte[1], new byte[i], new byte[0], 8));
Assert.AreEqual("IV must be at least 7 bytes long", e.Message);
}
}
public void Encrypt_throws_on_invalid_tag_length()
{
var testCases = new int[] { -1, 0, 1, 2, 3, 5, 7, 9, 11, 13, 15, 17, 18, 19, 20, 1024 };
var aes = new SjclAes(new byte[16]);
foreach (var i in testCases)
{
Assert.That(() => SjclCcm.Encrypt(aes, new byte[1], new byte[16], new byte[0], i),
Throws.TypeOf <CryptoException>()
.And.Message.EqualTo("Tag must be 4, 8, 10, 12, 14 or 16 bytes long"));
}
}
