What I meant was that twofish already exists as C-code. Gene did it in MI because the swap would be too cumbersome (slow?) in C. Correct Gene? If so, similar considerations may apply to PGP... > -----Original Message----- > From: email@example.com [SMTP:firstname.lastname@example.org] > Sent: Tuesday, February 01, 2000 5:22 PM > To: MI400@midrange.com > Subject: Re: 2 interesting projects... > > Lief, > > >but isn't that true of the twofish algorithm too? > >So why did Gene make an MI version? > > No; TwoFish has been granted free use rights for *Public. > > One reason Gene needed an MI version is the way the TwoFish algorithm > reuses the results of integer operations as part of the encryption > process. When used on a single platform, the algorithm would be > symmetrical, ie would decrypt correctly. But the Big-Endian vs > Little-Endian differences in integer storage formats in the 400 vs > Intel platforms means the files would not be cross-platform > compatible. So Gene's MI program does a swap on every 4 bytes to > mimic the Intel format to get cross-platform support. > > Doug > +--- > | This is the MI Programmers Mailing List! > | To submit a new message, send your mail to MI400@midrange.com. > | To subscribe to this list send email to MI400-SUB@midrange.com. > | To unsubscribe from this list send email to MI400-UNSUB@midrange.com. > | Questions should be directed to the list owner/operator: > email@example.com > +--- +--- | This is the MI Programmers Mailing List! | To submit a new message, send your mail to MI400@midrange.com. | To subscribe to this list send email to MI400-SUB@midrange.com. | To unsubscribe from this list send email to MI400-UNSUB@midrange.com. | Questions should be directed to the list owner/operator: firstname.lastname@example.org +---
As an Amazon Associate we earn from qualifying purchases.
Operating expenses for this site are earned using the Amazon Associate program and Google Adsense.