nateon-lib can now sign in normally as usual. Thanks to http://me2day.net/shinvee !

WARNING: You may not sign in to NATEON server with this library. We are trying to support a new authentication methodology using PKI. I don't have any solutions so far.

NCPT 1 xxxx@nate.com PRM 0
NCPT 1 PRM BASE64 1192 $(NateOn Certificate including Public-Key)
PRVK 2 BASE64 212 $(auto generated key-pair on the client side. 
    but i do NOT know the reason why header name is 'PRIVATE' not 'PUBLIC'. lol)
PRVK 2 
LSIN 3 $(Encoded with my private-key that be used on phrase 2. PRVK)
LSIN 3 $(Encoded authentication result with NATEON servers private-key, 
    so it can be decoded with public-key on phrase 1)

Sadly, NateOn's Certificate is not encoded with DER format. and I don't have enough time to digg with nateon protocol. Any suggestions will be welcome.

Simple Java implementation for nateon messenger.

It supports basic features. there are some events supported this library.

• sign-in
• who add me
• who remove me
• chatting channel opened
• chatting message received
• chatting channel closed
• channel join
• channel part
• sms received (such as SMS-MO)

it developed at May, 2005 for creating a simple sms-mo framework. so it didn't support full feature and has no plan to maintain.

feel free, and enjoy.