RE: Compression Order

Yes, signatures are small but the effort to create them is directly related to
the size of the file being signed.

Regards,

David Fischer
Drummond Group.

-----Original Message-----
From: [email protected]
[mailto:[email protected]]On Behalf Of joe mcverry
Sent: Tuesday, March 05, 2002 1:10 PM
To: David Fischer
Cc: [email protected]
Subject: Re: Compression Order



Signatures tend to be small - don't they?


Joe

> David Fischer wrote:
>
> We are beginning to implement the Compression Draft specification:
>
> http://www.ietf.org/internet-drafts/draft-ietf-ediint-compression-00.txt
>
> and an implementation decision has arisen.  When Compression is
> applied in concert with Signatures, which should be applied first?
>
>     Compress + Sign    or
>     Sign + Compress
>
>         and
>
>     Compress + Sign + Encrypt   or
>     Sign + Compress + Encrypt
>
> Different companies have presented valid business cases for each
> alternative.
>
> The advocates for Signing first desire the signature to be over
> readable text (you know what you are signing -- which is why we never
> Sign after Encrypting).
>
> The advocates for Compressing first desire performance improvements.
> In this case, Compression is compared as just another encoding scheme
> so it is really still plain text.
>
> Discussions thus far have resulted in a consensus that the
> implementors should be able to apply these functions in either order
> when sending.  When receiving, the implementations should be able to
> process either case.
>
> We are looking for further discussions. . .
>
> Regards,
>
> David Fischer
> Drummond Group.

--
-----------
Joe McVerry
American Coders Ltd.
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