Hello, I hope that this mail will find his way to the mailling list. I have one question. For one small embedded application, I need some encryption algorithm which can be easily implemented in 8 bit microcontroller with 38 bytes of RAM and 1KB of ROM. I tried to modify the IDEA algorithm to 8 bit operations - all multiplications modulo 257, subkey length 52 bytes, block size 4 bytes. Simply, all operations are converted from 16/32 bits to 8/16 bits. Because I am no professional cryptographer, I would like to ask you, if there is some major problem with this modified algorithm. Something what makes the 8 bit variant completely useless ? Is it possible to use this encryption algorithm ? I know that this variant will be far less secure than IDEA itself, but I don't need so strong encryption. The amount of data for encryption will be small, approx. 16 - 32 bytes. Thank you for every information. Best regards and PF 1997 Pavel Korensky -- **************************************************************************** * Pavel Korensky (pavelk@dator3.anet.cz) * * DATOR3 Ltd., Modranska 1895/17, 143 00 Prague 4, Czech Republic * * PGP key fingerprint: 00 65 5A B3 70 20 F1 54 D3 B3 E4 3E F8 A3 5E 7C * ****************************************************************************