Answer the following statements true (T) or false (F)

1. As with any block cipher, AES can be used to construct a message authentication code, and for this, only decryption is used.
2. The inverse add round key transformation is identical to the forward add round key transformation because the XOR operation is its own inverse.
3. The Rijndael developers designed the expansion key algorithm to be resistant to known cryptanalytic attacks.
4. The transformations AddRoundKey and InvMixColumn alter the sequence of bytes in State.
5. AES can be implemented very efficiently on an 8-bit processor.

1. FALSE
2. TRUE
3. TRUE
4. FALSE
5. TRUE