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Re: [pfx] Re: Stupid Base64
From: Charles Gregory (cgregory
hwcn.org)
Date: Tue May 02 2006 - 15:24:40 CDT
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On Tue, 2 May 2006, Victor Duchovni wrote:
> For experts only, it is possible to take a medium length substring, (not
> too short to generate FPs and not too long to be likely split accross
> more than two lines) prefix it with zero then one then two random bytes,
> base64 each of the encoded strings, discard the first and last 4 bytes,
> split the result into two pieces of equal length, and look for any of the
> 6 resulting fragments. This is not something you should do routinely...
(smile) Thanks, but that's not something I want to do for every idiot that
uses base64 on their spam. I'll let spamassassin catch those ones.
Sometimes there just aren't the answers I want. That's life.... :)
- Charles
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