Re: The importance of IVs

From: mobius30 (mobius30_at_hushmail.com)
Date: 08/27/05 

Date: 27 Aug 2005 13:15:34 -0700

Regis wrote:
>So just do your homework...make absolutely sure that you run the test
>vectors, and in the end, your efforts will pay off.

Yeah, I guess it's better to doubt everything, trust no one.

>By the way, you never mentioned whether you're looking for
>off-the-shelf crypto software, or if you're looking for crypto
>libraries with which to build such software. Let me know what you
>need and I'll do my best to help you out. No sense in you wasting the
>same amount of time as I did while discovering faulty junk.

I'm by no means neither a professional programmer NOR an accomplished
crytographer. I'm an amateur programmer, with most of my experience in
VB .NET. I am looking for BOTH off-the-shelf symmetric software and
the libraries necessary to build my own. The end goal is to gain
enough reference and knowledge to:
Build a good solid TRUE Blowfish crypto app in VB.NET. Nothing
spectacular, just a simple plain-text app that is secure (i.e. doesn't
write to swap, uses the correct algorithm, does the full 16-rounds,
etc). Almost every app I've found (freeware at least) uses C or C++.
So, yes, your help would be greatly appreciated. Do you know of any
off-the-shelf free (or low-cost) apps that implement TRUE 16-round
64-bit block Blowfish (you know, what Schneier actually intended a
decade ago!)? Any in VB6 or .NET? Source code for the either? Any
libraries that have the Blowfish functions (or classes) in VB6 or .NET
(or can be called from a VB.NET app)? I've seen you post here often,
and what you say makes sense to me (the times I can actually grasp what
you are writing about). So, I will trust your recommendations to some
degree. However, as you advised above, whatever you recommend I will
put to the test. ;-)
So, in summary, first I would like to hear your recommendations on
off-the-shelf free (or low cost) TRUE Blowfish crypto apps. Second,
any recommendations for libraries would be great. Finally, the source
code in VB6 or .NET would be even better! Am I dreaming here? Are
there any apps/libraries that are worth a cent written in VB .NET? I
don't want you to have to bash this app or endorse that app, etc. etc.
Just some off-the-record recommendations would be helpful. Thanks.

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