I've been seeing this error - and also the problem that if K-9 email receives an unsigned reply to a cleartext-signed message, it says "Bad signature" (which is half a problem because the actual response is not signed at all) *and* refuses to display the text of the received message - which is bad.
Sent from my iPad > On Apr 4, 2016, at 10:53, Greg Troxel <[email protected]> wrote: > > > I see in > > https://github.com/k9mail/k-9/wiki/Crypto-Design-Thoughts > > that there is a notion that it's broken to encrypt but not sign. > However, I see this pattern quite often, where people don't particularly > want to cryptographically bind statements to themselves, but do want > confidentiality. > > I see the point about not providing a keyid for the reverse direction, > but signing isn't really intended to do that. > > However, I realize that the UI becomes hard. So I'd suggest for config > > signing: never, if-encrypted, always > > and perhaps if-encrypted is not necessary, but I bet some people want > it. > > For encryption, I see > > encrypt: never, if-available, if-available, always > > I think per-recipient policy is needed; the point is to force it to > always for people that you know have keys and that want encrypted mail. > Probably this should be stored in contacts, as a property, and be > general, but it could be a lookaside table in k-9. > > Finally, when replying to a message that was decrypted, policy should > be forced, more or less, to encrypt always. It should take significant > effort (popup with warning) to send an unencrypted reply to an encrypted > message, with or without quoted text. > > -- > -- > You received this message because you are subscribed to the K-9 Mail Users > List. > To post to this group, send email to [email protected] > To unsubscribe, email [email protected] > To report an issue with K-9 Mail, visit > http://code.google.com/p/k9mail/issues/list > For more options, visit this group at http://groups.google.com/group/k-9-mail > > --- > You received this message because you are subscribed to the Google Groups > "K-9 Mail" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > For more options, visit https://groups.google.com/d/optout. -- -- You received this message because you are subscribed to the K-9 Mail Users List. To post to this group, send email to [email protected] To unsubscribe, email [email protected] To report an issue with K-9 Mail, visit http://code.google.com/p/k9mail/issues/list For more options, visit this group at http://groups.google.com/group/k-9-mail --- You received this message because you are subscribed to the Google Groups "K-9 Mail" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
smime.p7s
Description: S/MIME cryptographic signature
