DCC Checksums: How are they determined?

Vernon Schryver vjs@calcite.rhyolite.com
Thu Nov 7 17:15:53 UTC 2002

> From: Peter Beckman <beckman@purplecow.com>

> ...
> From: John Q. Smith <abc8382fake@hotmail.com>
>  is the hash on "John ... mail.com>", "From: John ... mail.com>", or
>  something else?  Is whitespace deleted before running the checksum?
> ...

The hashes on header lines cover the entire line.  It only tries to
ignore common legitimate variations such as upper/lower case, white
space and surrounding brackets or quotes.  They do not try to ignore
"personalizations" such as odd strings added to Subject lines.

Vernon Schryver    vjs@rhyolite.com

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