Public ReadOnly Property Key As Byte()

public byte[] Key {get;}

byte[] ivrandom = new byte[16];
new Random().NextBytes(ivrandom);

using (AESCryptoKey k1 = new AESCryptoKey())
using (AESCryptoKey k2 = AESCryptoKey.FromBytes(k1.ToArray()))
{
    Assert.AreEqual(k1.Key, k2.Key);
    Assert.AreEqual(k1.IV, k2.IV);
}

Dim ivrandom As Byte() = New Byte(16) {}
New Random().NextBytes(ivrandom)

Using k1 As New AESCryptoKey()
    Using k2 As AESCryptoKey = AESCryptoKey.FromBytes(k1.ToArray())
        Assert.AreEqual(k1.Key, k2.Key)
        Assert.AreEqual(k1.IV, k2.IV)
    End Using
End Using