meaningful and confidential subject lines in messages using pgp

[Johan Wevers]

sen_ml@eccosys.com wrote:

>   -it would be possible to decide to use a fixed subject string for
>    message B such as "Encrypted Mail Follows" (cf. urn:ietf:rfc:1421 PEM).
>    mail clients could support the functionality of automatically 
>    extracting "message A" (or asking the user for permission to do
>    so), upon reception of a message w/ the fixed subject line.

Isn't it much easier in this case to choose a fixed subject line like
above and add anotrher header like X-Encrypted-Subject: with contains
the subject, encrypted with RSA or El Gamal? A mail reader can then ask
for the password once (or more if more secret keys are used), decrypt all
these subject lines and do it completely transparant.

-- 
ir. J.C.A. Wevers         //  Physics and science fiction site:
johanw@vulcan.xs4all.nl   //  http://www.xs4all.nl/~johanw/index.html
PGP public keys at http://www.xs4all.nl/~johanw/pgpkeys.html