public void ByteByByteTest()
{
var r = new Random();
byte[] iv = new byte[16];
byte[] key = new byte[32];
byte[] message = new byte[100];
r.NextBytes(iv);
r.NextBytes(key);
r.NextBytes(message);
Aes a = new Aes();
AesCtrMode c = new AesCtrMode(a, iv);
a.Initialize(true, key);
var encryptedA = c.Process(message);
c = new AesCtrMode(a, iv);
var encryptedB = Enumerable.Range(0, message.Length)
.Select(i => c.Process(new ArraySegment <byte>(message, i, 1)).AsEnumerable())
.Aggregate((x, y) => (x ?? new byte[0]).Concat(y))
.ToArray();
Assert.Equal(encryptedA, encryptedB);
}
public void Offset2Test()
{
var r = new Random();
byte[] iv = new byte[16];
byte[] key = new byte[32];
byte[] message = new byte[100];
r.NextBytes(iv);
r.NextBytes(key);
r.NextBytes(message);
Aes a = new Aes();
AesCtrMode c = new AesCtrMode(a, iv);
a.Initialize(true, key);
var encrypted = c.Process(new ArraySegment <byte>(message, 10, 80));
var enc2 = new byte[100];
Array.Copy(encrypted, 0, enc2, 10, 80);
a.Initialize(true, key);
c = new AesCtrMode(a, iv);
var decrypted = c.Process(new ArraySegment <byte>(enc2, 10, 80));
Assert.Equal(message.Skip(10).Take(80).ToArray(), decrypted);
}
public void AlterTest()
{
var r = new Random();
for (int i = 0; i < 100; i++)
{
byte[] iv = new byte[16];
byte[] key = new byte[32];
byte[] message = new byte[100];
r.NextBytes(iv);
r.NextBytes(key);
r.NextBytes(message);
Aes a = new Aes();
AesCtrMode c = new AesCtrMode(a, iv);
a.Initialize(true, key);
var encrypted = c.Process(message);
encrypted[r.Next(encrypted.Length)]++;
a.Initialize(true, key);
c = new AesCtrMode(a, iv);
var decrypted = c.Process(encrypted);
Assert.NotNull(decrypted);
Assert.NotEqual(message, decrypted);
}
}
public void ReferenceTest(byte[] key, byte[] iv, byte[] input, byte[] output)
{
Aes a = new Aes();
a.Initialize(true, key);
AesCtrMode c = new AesCtrMode(a, iv);
var encrypted = c.Process(input);
Assert.Equal(output, encrypted);
}
public void MultiSizeTest(int size)
{
var r = new Random();
byte[] iv = new byte[16];
byte[] key = new byte[32];
byte[] message = new byte[size];
r.NextBytes(iv);
r.NextBytes(key);
r.NextBytes(message);
Aes a = new Aes();
a.Initialize(true, key);
AesCtrMode c = new AesCtrMode(a, iv);
var encrypted = c.Process(message);
a.Initialize(true, key);
c = new AesCtrMode(a, iv);
var decrypted = c.Process(encrypted);
Assert.Equal(message, decrypted);
}
public void RepeatibilityTest()
{
var r = new Random();
for (int i = 0; i < 100; i++)
{
byte[] iv = new byte[16];
byte[] key = new byte[32];
byte[] message = new byte[100];
r.NextBytes(iv);
r.NextBytes(key);
r.NextBytes(message);
Aes a = new Aes();
AesCtrMode c = new AesCtrMode(a, iv);
a.Initialize(true, key);
var encrypted = c.Process(message);
a.Initialize(true, key);
c = new AesCtrMode(a, iv);
var decrypted = c.Process(encrypted);
Assert.Equal(message, decrypted);
}
}
public AesCtrCipher(ReadOnlySpan <byte> key, ReadOnlySpan <byte> iv)
{
_baseCipher = new AesCtrMode();
_baseCipher.Initialize(key, iv);
}
