[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: Contacting Matthew Fischer - IDEA cipher for Apple II
- Subject: Re: Contacting Matthew Fischer - IDEA cipher for Apple II
- From: Matthew Fischer <futhjjjark@ujjjsers.sourcejjjforge.njjjet>
- Date: Sun, 06 Jul 2008 03:52:11 -0600
- Newsgroups: comp.sys.apple2
- References: <e59efec2-53c9-4f12-8f4b-53293d6b7e44@p25g2000hsf.googlegroups.com>
- User-agent: Pan/0.14.2 (This is not a psychotic episode. It's a cleansing moment of clarity.)
- Xref: g2news1.google.com comp.sys.apple2:1480
On Sat, 05 Jul 2008, roughana wrote:
> I would like to contact Matthew Fischer who frequented here in
> 1995-1999.
> He implemented the IDEA cipher for the Apple II in 6502.
Hello, Andrew. I wrote the routines in question. I don't have the
original file that was posted to comp.sources.apple2, but I do still
have those routines. Would you like me to mail them to you? Are you
planning on incorporating them into your crypto program? I'm curious as
to why you would want to support IDEA in this day and age.
I have actually been playing with that code a little recently. Besides
the original 65C02 version, I made a pure 6502 version, and timed them.
The 65C02 opcodes don't make much of a difference in the speed, so if
you're interested in something that would run on all Apple II's, I could
send you the 6502 version.
I've also got some Rijndael (AES) code I've been working on. At this
point, it looks like it works, but it could probably be made faster. Let
me know if you are interested in a copy.
I've also got DES routines, which are based on Paul Guertin's code, but
it looks like you already have DES routines.