signed and encrypted pgp message vs. encrpted only

signed and encrypted pgp message vs. encrpted only

Post by Thomas J. Boschlo » Fri, 06 Apr 2001 22:26:00


> is it possible for a third party (someone without keys) to tell just from a
> pgp message block whether the message has been signed and encrypted, or
> only encrypted?

No. The message would be several bytes larger however, but the signature
is (always) inside the encryption. So the receiver will have to decrypt

Your from line would be very telling however, but I see you are using a
remailer ;-)


Version: PGPfreeware 5.5.3i for non-commercial use <>

Kittenbirds - You, me and Jesus: "I love your hair it's just so long"


1. PGP 5.0 encrypting, not signing news messages..

I'm having some difficulties with signing newsgroup messages (Linux, slrn
& PGP 5.0i) - on some occasions instead of signing the messages (a small
macro invoking pgps -ta -o .followup-body) it often does one of two things:

Appears to work OK, but encrypt the message (to me it seems) instead of signing
Give a message after writing that a "SizeAdvise Promise not kept" - thus the
end of the (otherwise signed) message is deleted.

Is this a not-uncommon occurrence? It's a major PITA and I'd be interested to
hear of anyone else with a similar experience, or even better a fix/workaround.

Michael Fleming.

Michael Fleming -=(UDIC)=- / Mallet Wielder
PGP Keys from homepage or keyservers
Home Page:
Nuke a spammer for the deity of your choice today!
"Bill Gates isn't the Devil - Satan made sure Hell worked
 before he opened it to the damned..."

2. Consulting

3. Outlook automatic PGP sign/encrypt ONLY IF I have all users' keys

4. Eudora 6b18 (Mac) Mail Drawer

5. Using PGP to encrypting and signing or decrypting a text file via Visual Basic

6. UN-Removable?

7. paper on defective 'sign and encrypt' in pgp

8. Backmaster and Shoeshining, an interesting tale.

9. Question about replying to PGP encrypted messages

10. Outlook 2002 won't decrypt PGP-encrypted message

11. What about sending encrypted messages to someone without PGP

12. here is a message that I'm encrypting - passcode = pgp

13. Word wrap on clear signed messages from PGP 8.0 using plug-in