TinyCrypt.cs - Usage

var tc = new TinyCrypt();
byte[] tc.Encrypt(byte[] buffer, byte[] key);
byte[] tc.Decrypt(byte[] buffer, byte[] key);

- or - easy way, but make sure you save tc.Key for decryption

var tc = new TinyCrypt();
byte[] tc.Encrypt(byte[] buffer);
byte[] tc.Decrypt(byte[] buffer);