Is there a good block cipher that supports small block sizes?

Question

Possible duplicate:
Which “good” block encryption algorithm has the shortest result?

I am looking for a block cipher that supports small block sizes, ideally 16 bits in size. I want to use CMAC mode, so using block encryption with OFB mode or stream cipher is undesirable. Speed ​​is very important, and the cipher should not be susceptible to known attacks. This is a theoretical application, and high security is not required, but speed is very important.

Is there something similar? How close to these specifications can I get?

Answer 1

Skipjack 64- NIST .