I think the best way to secure your IM is Simplite 2.1.2... (as the original successor of Simp 1.0
)
SIMPLITE
quote:
Authentication and encryption :
SimpLite-MSN authenticates your contacts using RSA keys up to 2048 bits. Encryption is done using the following algorithms: AES (up to 128 bits) or Twofish.
Simplite is free .. but you can buy Simplite PRO
quote:
If your contact is using SimpPro, you can receive or send files to him. Files will be automatically encrypted with the same algorithms than those used to secure your conversations.
Note: Under MSN6, avatars, emoticons, games are considered as file transfers and thus secured by SimpLite-MSN if your contact is using SimpPro.
I'm not sure that it's usefull to make a plugin to do that... simplite is really good (no delay or other bad thing when i'm using it) but if you are thinking you can make a better method with a MsgPlus! plugin.. just do it ... lol