I wrote:

> > I've just thrown together a PIC16 implementation [of the Tiny
> > Encryption Algorithm.  It encrypts or decrypts] a 64-bit block
> > in about 6600 cycles .... The "encode" and "decode" routines
> > occupy [a total of] 275 words of code space

and Marco DI LEO <PICLIST@MITVMA.MIT.EDU> replied:

> I got 6538 cycles for encipher and a little more for decipher ....
> 269 words!!

    That's impressive, Marco.

> For a quick check: enciphering an all zero's data block using an
> all zero's key gives a 0xed285da1 0x455b33c1 cipher block.

    Hmm... My code returns 0x66750736 0x5CF66BDD.

    There's a bug in either your code or mine (or in both)... Later
    today, when Dr. Shepherd gives me his results, I'll know
    whether mine is correct.

> BTW: if there is someone willing to have my code I can post it here
> (it is a good practice?) or I can send individual copy.

    Programs as large as these shouldn't be sent to the PICLIST.
    After my code is verified by Dr. Shepherd, I'll post it on my
    web page.

    -Andy

=== Andrew Warren - fastfwd@ix.netcom.com
=== Fast Forward Engineering - Vista, California
=== http://www.geocities.com/SiliconValley/2499