REPOST: Re: High Bandwidth Mixing Cipher Chips
tomstdenis_at_gmail.com
Date: 10/28/05
- Next message: David A Molnar: "REPOST: Re: Captchas"
- Previous message: Douglas Eagleson: "REPOST: A Very Good Hidden Algorithm-File Encryption Application-Java"
- In reply to: panteltje_at_yahoo.com: "Re: High Bandwidth Mixing Cipher Chips"
- Next in thread: panteltje_at_yahoo.com: "REPOST: Re: High Bandwidth Mixing Cipher Chips"
- Messages sorted by: [ date ] [ thread ] [ subject ] [ author ] [ attachment ]
Date: 28 Oct 2005 12:23:25 -0700
panteltje@yahoo.com wrote:
> >
> > So I repeat that the design is not well suited for hardware
> > implementation.
> >
> > Tom
> Have you ever taken a cypher, written it in a HDL, programmed a FPGA
> and had it working?
> yes [ ]
> no [ ]
> dunno [ ]
I worked for a firm which developed crypto accelerators in Verilog.
While I'm not an EE myself I did spend quite a bit of time working with
them on the "making things fit" side. I helped develop parts of some
upcoming [bignum ALU] projects, I've listened to customers bitch and
whine over 5k gates, etc...
Put it this way, the average customer we had for networking wanted
>10Gbps with less than a half million gates doing GCM. So not just some half-ass broken cipher but a full AES and GF multiplier. Oh and it was full-duplex.
I'm also the author of the CS^2 block cipher [search iacr.org for it].
which is a fraction the size of this mixed-network stuff.
Lets throw some numbers out there shall we ...
>>From my Toorcon talk [these are public knowledge]. The Bignum ALU I
helped design at the firm could hit ~260K cycles at 200Mhz in less than
a million transistors for RSA-1024 decrypt operations. It was ~170K
gates. That's seven times more clock efficient than an AMD64 and
1/70th the size [thereabouts].
So when you say you have a 500K gate block cipher and I question it ...
it's for good reason. Gates aren't cheap and a professional would
realize that.
Tom
========= WAS CANCELLED BY =======:
Path: ...skynet.be!news.csl-gmbh.net!newsfeed01.sul.t-online.de!t-online.de!newsfeed01.chello.at!newsfeed02.chello.at!news.chello.at.POSTED!not-for-mail
From: tomstdenis@gmail.com
Control: cancel <1130527405.635089.166070@f14g2000cwb.googlegroups.com>
Subject: Cancel "Re: High Bandwidth Mixing Cipher Chips"
Newsgroups: sci.crypt
Date: Fri, 28 Oct 2005 16:51:36 GMT
Message-ID: <6530454288.716046.781451@f14g2000cwb.googlegroups.com>
User-Agent: Xnews/M3
X-Complaints-To: abuse@chello.at
Organization: chello.at
Lines: 2
NNTP-Posting-Host: 80.108.28.208 (80.108.28.208)
NNTP-Posting-Date: Fri, 28 Oct 2005 22:17:15 +0200
X-Trace: 3d5e34362874bf5c9b97515956
========= WAS CANCELLED BY =======:
Path: ...news.maxwell.syr.edu!feed4.newsreader.com!newsreader.com!feed7.newsreader.com!newsreader.com!hwmnpeer01.lga!hwmedia!hw-filter.lga!fe08.lga.POSTED!53ab2750!not-for-mail
From: tomstdenis@gmail.com
Control: cancel <7$%$$-%_$__%_-%%%_$@news.noc.cabal.int>
Subject: Re: REPOST: Re: High Bandwidth Mixing Cipher Chips
Newsgroups: sci.crypt
References: <7$%$$-%_$__%_-%%%_$@news.noc.cabal.int>
Organization: http://groups.google.com
Message-ID: <1_-__-_$_--_-%-_%%_@news.noc.cabal.int>
X-Newsreader: Microsoft Outlook Express Macintosh Edition - 7.1 (8175)
Mime-Version: 1.0
Content-Type: text/plain
Content-Transfer-Encoding: 7bit
Lines: 2
Date: Fri, 28 Oct 2005 18:09:57 GMT
NNTP-Posting-Host: 24.47.60.236
X-Complaints-To: abuse@cv.net
X-Trace: fe08.lga 1130536907 24.47.60.236 (Fri, 28 Oct 2005 15:01:47 MST)
NNTP-Posting-Date: Fri, 28 Oct 2005 15:01:47 MST
- Next message: David A Molnar: "REPOST: Re: Captchas"
- Previous message: Douglas Eagleson: "REPOST: A Very Good Hidden Algorithm-File Encryption Application-Java"
- In reply to: panteltje_at_yahoo.com: "Re: High Bandwidth Mixing Cipher Chips"
- Next in thread: panteltje_at_yahoo.com: "REPOST: Re: High Bandwidth Mixing Cipher Chips"
- Messages sorted by: [ date ] [ thread ] [ subject ] [ author ] [ attachment ]
Relevant Pages
|
