Make it clear that decryption is supported

[aaronraimist]

Signed-off-by: Aaron Raimist aaron@raim.ist

README isn't very clear that decryption is supported but encryption is not. Got reports that someone was able to decrypt messages in pidgin and thought everyone thought that encryption was broken for a second. https://matrix.to/#/!iNmaIQExDMeqdITdHH:matrix.org/$15487094581170217pdtaL:matrix.org?via=matrix.org&via=linuxgaming.life&via=disroot.org

[steils]

Hi! Does decryption really work for you? I still get this: #85
(and haven't had time to debug it unfortunately)

[aaronraimist]

I haven't used purple-matrix but I've seen it work. Yesterday it was reported that someone was able to decrypt messages in Pidgin. They didn't know it supported decryption at all so they thought something was broken which is why I made this PR.

[schildbach]

In rooms with encryption enabled, pidgin/libpurple is the only client which doesn't get the messages. So I assume it doesn't support encryption.

It can send messages into an encrypted room, though they are then plaintext (as indicated by the other clients).

[richvdh]

In rooms with encryption enabled, pidgin/libpurple is the only client which doesn't get the messages.

decryption is supported since #70 landed. If it's not working for you, that's a separate problem. Possibly you have built it without it enabled. Either way, it's not a matter for this PR.

So I assume it doesn't support encryption.

This is true, but your line of reasoning to get to it is faulty.

[schildbach]

@richvdh You're likely right. I'm using a version from before Aug 2018. Sorry for the confusion.