Signing the symmetrical encrypted data

[Hideki Saito]

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This topic has been brought up few days ago in GnuPG New Japan group.

In PGP, there is an option that allows signing symmetrically encrypted 
data, which you can decrypt using symmetrical password then sign is 
verified.

GnuPG can correctly decrypt and verify such files, but making one 
requires quite messy technique.

For example, one would do:
gpg -su [Signer's ID] -o tempfile foo.txt
gpg -a --symmetric --no-literal -o result.txt tempfile

(Some reason, first command must be set to output binary to this to 
work, not armor texts)

Doing:
gpg -o file -su [Signer's ID] foo.txt
causes conflicting command.

Is there any exisiting way of doing this in one command line? I 
think this would be quite useful feature.
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-- 
Hideki Saito mailto:hideki@allcity.net
PGP KeyID: 0x105D2549
9EEA 558C 99B3 26CC F68E  C588 E153 0DF9 105D 2549