12/14   In AES, if someone knows both the plaintext and the ciphertext of my
        data, is there a way other than brute force to figure out my key?  Thx.
        \_ No, AES is intended to be secure against this.  It should even be
           secure if the attacker gets to choose the plaintext and see what it
           encrypts to, or vice versa.
           \_ Thanks.  -- OP