[pidgin-encrypt-devel] encryption protocol

[Johannes M. <der...@gm...>]

Hi,

I'm developing a jabber client which needs to encrypt the communication 
to Pidgin.
I did not find some documentation on the protocol you use, so I tried to 
figure out how it works with the help of the XMPP-Konsole Plugin, which 
shows the Raw xmpp queries.
It seems to be straight forward. The RSA key of the peer is requested, 
before you send data to the peer. Once received, the key can be used to 
encrypt further messages. Message types like a simple message or a key 
response are denoted by a preceeding "Msg:" or "Key:".
The key request is just "Send Key". Additionally every encrypted message 
and the encryption request has the prefix "*** Encrypted with the 
Gaim-Encryption plugin : Send Key". Then there are further details like 
the nss version and the messages length.

It would be great if you could provide more details, including answers 
to the questions that piled up so far.
1.What does the string following "Msg:" mean in 
[...]Msg:S52c9223e68:R50d67243eb: Len[...]?
2.What is the next string after the lenght specification in a key 
response like [...]Len 249:yD2BV/btzekaownH6Y903lz8+w0jIMr2[,the actual 
public key]?
3.Why does my pidgin instance on linux in contrast to the instance on my 
windows machine send the whole body-tag + message in a html-Tag as well? 
(I have an older version on my linux machine, so this might be the problem)


Thanks for your help and of course for pidgin-encryption,
Johannes Müller