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Re: Introducing TGP...
From: "Thor (Hammer of God)" <Thor () hammerofgod com>
Date: Wed, 16 Jun 2010 22:47:37 +0000

You're using a 1024 bit key here which seems a bit gutsy ;-)

Without better attacks, you basically have:

Brute force AES 256 -> O(2^256)
Bruce force your 20 char password -> roughly O(2^(20*7)) == O(2^140)
Factor your 1024 bit public modulus -> roughly O(2^80)

Since a 768 bit RSA key has already been factored I'd say you only
have a few years before a moderately sized cluster could factor your public
key.

Of course, as I write this I realize I'm about to sign this message
with a 1024 bit DSA key...

Actually it's 2048, which I was comfortable with.  And don't forget the 16bit
salt on that password ;)

I stand corrected-that key was indeed 1024, not 2048.  LSI still has some hope in cracking my key and getting that scan 
of my passport since I used "ancient encryption" after all!  FWIW, v1.1.07 actually uses 4096 bit keys, which I will 
update shortly.  Not sure if I'm going to make that configurable or not.  I'm thinking no, because there's no real 
value in using a smaller key in this application.

t

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