Including an active timestamp in encrypted (crypt) org entries

[Marcelo de Moraes Serpa <celoserpa@gmail.com>]

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Hi folks,

So I timestamp everything I input into my (org-based) GTD system (except
for inbox items, that I'm sure I will review soon anyway). Here's how I do
it:

* Sample entry
  <2012-01-15 Sun 00:52>

I have  (org-insert-time-stamp nil t nil) bound to C-x C-y and I just
insert it below the entry. This makes for a nice chronologic history of
every data in the system.

However, I have a problem with encrypted entries. Of course, if I add it as
part of the content to be encrypted, it will not appear as plain text, but
i tried to do like this:

1) Create the entry:

* Sample Entry

2) Write its contents
3) Tag with :crypt:

* Sample Entry :crypt:

3) Save the buffer. The contents are now encrypted:

* Sample Entry :crypt:
-----BEGIN PGP MESSAGE-----
Version: GnuPG v1.4.11 (Darwin)

hQEMA7MmqOB5vxnzAQgAy6tE4lj1uLMaAm8+dPL9N2LHxZsH+VWyiig6gY1rE0M0
Y1wDLDPYTIR+AUoSMGmU4S+9DZ9v4xoTBev4tjhtZIA9Lvw6aqf3Xlb2YGTJCCeq
...
-----END PGP MESSAGE-----

4) Add the timestamp *before* the --BEGIN PGP MESSAGE-- line:

* Sample Entry :crypt:
  <2012-01-15 Sun 00:52>
-----BEGIN PGP MESSAGE-----
...

5) Save again.

Expected: Encrypted message and timestamp to stay as is.
What happens: A new encrypted message is written, with the timestamp + the
"old" encrypted message as part of it.

Any hints appreciated :)

- Marcelo.

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