Re: Show that an encrypted message was signed, without decrypting it

2020-10-14 Thread Stefan Claas
Helmut Waitzmann Anti-Spam-Ticket.b.qc3c wrote: > Stefan Claas : > >Helmut Waitzmann Anti-Spam-Ticket.b.qc3c wrote: > >> Stefan Claas : > > [The ability to check that an encrypted message has been signed.]  > > > >It would allow Alice (in her organization), or others, to do a > >pre-check, w

Re: Show that an encrypted message was signed, without decrypting it

2020-10-14 Thread Helmut Waitzmann Anti-Spam-Ticket . b . qc3c
Stefan Claas : Helmut Waitzmann Anti-Spam-Ticket.b.qc3c wrote: Stefan Claas : [The ability to check that an encrypted message has been signed.]  It would allow Alice (in her organization), or others, to do a pre-check, with procmail etc., to set-up an auto-responder, informing Bob that h

Re: Show that an encrypted message was signed, without decrypting it

2020-10-14 Thread Stefan Claas via Gnupg-users
On 2020-10-13 17:02, Daniel Kahn Gillmor via Gnupg-users wrote: > On Sun 2020-10-11 09:59:12 +0200, Stefan Claas wrote: >> Helmut Waitzmann Anti-Spam-Ticket.b.qc3c wrote: >>> Yes, but why should she want to be able to do that?  She could >>> decrypt the message and, if it turns out that the message

Re: Show that an encrypted message was signed, without decrypting it

2020-10-13 Thread Daniel Kahn Gillmor via Gnupg-users
On Sun 2020-10-11 09:59:12 +0200, Stefan Claas wrote: > Helmut Waitzmann Anti-Spam-Ticket.b.qc3c wrote: >> Yes, but why should she want to be able to do that?  She could >> decrypt the message and, if it turns out that the message is not >> signed, discard the message. > > It would allow Alice (i

Re: Show that an encrypted message was signed, without decrypting it

2020-10-12 Thread Teemu Likonen
* 2020-10-11 22:47:01+02, Neal H. Walfield wrote: > On Sun, 11 Oct 2020 11:02:00 +0200, > Teemu Likonen wrote: >> It seems that there is a visible signature packet in encrypted and >> signed messages. See the output of this command: >> >> echo message | gpg --encrypt --sign --default-recipien

Re: Show that an encrypted message was signed, without decrypting it

2020-10-11 Thread Neal H. Walfield
Hi Teemu, On Sun, 11 Oct 2020 11:02:00 +0200, Teemu Likonen wrote: > * 2020-10-11 02:40:28+02, Stefan Claas wrote: > > > I was reading old GnuPG threads were people were asking if it's > > possible to extract a signature from an encrypted message. > > It seems that there is a visible signature p

Re: Show that an encrypted message was signed, without decrypting it

2020-10-11 Thread Stefan Claas
Stefan Claas wrote: > Helmut Waitzmann Anti-Spam-Ticket.b.qc3c wrote: > > > Stefan Claas : > > > > >I was reading old GnuPG threads were people were asking if it's > > >possible to extract a signature from an encrypted message. > > > > > >I would like to ask, I don't know if this is already p

Re: Show that an encrypted message was signed, without decrypting it

2020-10-11 Thread Teemu Likonen
* 2020-10-11 02:40:28+02, Stefan Claas wrote: > I was reading old GnuPG threads were people were asking if it's > possible to extract a signature from an encrypted message. It seems that there is a visible signature packet in encrypted and signed messages. See the output of this command: ech

Re: Show that an encrypted message was signed, without decrypting it

2020-10-11 Thread Stefan Claas
Helmut Waitzmann Anti-Spam-Ticket.b.qc3c wrote: > Stefan Claas : > > >I was reading old GnuPG threads were people were asking if it's > >possible to extract a signature from an encrypted message. > > > >I would like to ask, I don't know if this is already possible or > >if it's planned, if Ali

Re: Show that an encrypted message was signed, without decrypting it

2020-10-11 Thread Helmut Waitzmann Anti-Spam-Ticket . b . qc3c
Stefan Claas : I was reading old GnuPG threads were people were asking if it's possible to extract a signature from an encrypted message. I would like to ask, I don't know if this is already possible or if it's planned, if Alice would request from Bob that he always signs his messages and Bo

Show that an encrypted message was signed, without decrypting it

2020-10-10 Thread Stefan Claas
Hi Werner and all, I was reading old GnuPG threads were people were asking if it's possible to extract a signature from an encrypted message. I would like to ask, I don't know if this is already possible or if it's planned, if Alice would request from Bob that he always signs his messages and Bo