Re: Crypto Craft Knowledge

2009-02-24 Thread Cat Okita

On Sat, 21 Feb 2009, Peter Gutmann wrote:

This points out an awkward problem though, that if you're a commercial vendor
and you have a customer who wants to do something stupid, you can't afford not
to allow this.  While my usual response to requests to do things insecurely is
"If you want to shoot yourself in the foot then use CryptoAPI", I can only do
this because I care more about security than money.  For any commercial vendor
who has to put the money first, this isn't an option.


That's not entirely true -- even commercial vendors have things like
ongoing support to consider, and some customers just cost more money
than they're worth.

cheers!
==
"A cat spends her life conflicted between a deep, passionate and profound
desire for fish and an equally deep, passionate and profound desire to
avoid getting wet.  This is the defining metaphor of my life right now."

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Re: Crypto Craft Knowledge

2009-02-24 Thread Cat Okita

On Tue, 17 Feb 2009, James Hughes wrote:
I find this conversation off the point. Consider other trades like 
woodworking. There is no FAQ that can be created that would be applicable to 
building a picture frame, dining room table or a covered bridge. A FAQ for 
creating a picture frame would be possible, but this is not the FAQ that is 
being discussed.


You're thinking at the wrong level.

There are definitely FAQs that are applicable to building a picture
frame, a dining room table, or a covered bridge.

Woodworking FAQs can (and do) exist to teach basic skills, like sawing and 
measuring wood, different ways to join bits of wood together, and what 
types of join are most appropriate for what type of task.  Further, there

are discussions about things like load and stress, and what designs and
materials are best suited to what applications.

The same applies for implementing crypto -- teach the building blocks,
issues and judgement points required for good understanding and
implementation.

Ultimately it doesn't matter if they're building a picture frame, a
dining room table, or a covered bridge, as you've put it -- the skills,
materials and judgement of what to use where are what matters.

cheers!
==
"A cat spends her life conflicted between a deep, passionate and profound
desire for fish and an equally deep, passionate and profound desire to
avoid getting wet.  This is the defining metaphor of my life right now."

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Re: once more, with feeling.

2008-09-09 Thread Cat Okita

On Mon, 8 Sep 2008, Adam Shostack wrote:

What makes now the perfect time to address an issue which has been
present for quite soem time?


I'd turn that question around, and ask what makes now such a bad time to
address an issue that's been present (and not addressed) for quite some
time... ?

Surely the recent DNS fiasco was enough of an illustration of the merits
of not worrying about something that's been a well known issue for ages...

cheers!
==
"A cat spends her life conflicted between a deep, passionate and profound
desire for fish and an equally deep, passionate and profound desire to
avoid getting wet.  This is the defining metaphor of my life right now."

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Re: Strength in Complexity?

2008-08-04 Thread Cat Okita

On Sun, 3 Aug 2008, Arshad Noor wrote:

A more optimistic way of putting this, Ben, is to state that EKMI allows
domain-experts of underlying components to address the complex issues of
their domain in ways that they deem best, while providing value on top
of those components.  I see no reason to reinvent any of the components
- despite their imperfections - when they serve my purpose very well.
The business goal here is not cryptographic elegance or perfection, but
a solution to a problem without creating new vulnerabilities.


... or in other words, EKMI leaves all of the hard/impossible problems
to be solved by somebody else.  I'd have to agree with Ben that I'm
not seeing the value add of an additional layer of complexity.


That may be because you are a cryptographer.  If you were the CSO, an
Operations Director, or an Application Developer in a company that had
to manage encryption keys for 5,000 POS Terminals, 10,000 laptops,
desktops and servers across multiple data-centers and 400 stores, you
would see it very differently.


That's an interesting presumption that you're making -- are you familiar
with your audience?

cheers!
==
"A cat spends her life conflicted between a deep, passionate and profound
desire for fish and an equally deep, passionate and profound desire to
avoid getting wet.  This is the defining metaphor of my life right now."

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