Tripcode - from the archives

A tripcode is a neat little user-identity system that 2ch thought up, and has been extensively copied by every other anonymous board in existence. At its core, a tripcode is simply a way to authenticate that a user is who they say they are without a login system, or even record-keeping.

Here's the non-technical explanation: most imageboards allow one to attach a name to one's post; i.e. "anon". A code can then be attached to the end of this name, with a separating mark of some kind between them (usually # and ! are triggers for tripcodes). So, the string anon#tripcode translates to anon!3GqYIJ3Obs. The string 3GqYIJ3Obs is the result after tripcode has been hashed, spliced, and otherwise mangled by the board software.

Because this system is insecure (given a moderately powerful computer and some time, any tripcode can be brute-forced), secure tripcodes have also been invented. These are usually triggered by the presence of a second # or !. The reason that these are more secure is that they use a secret, board-specific ''salt'' for their generation, making their brute-forcing highly difficult and currently out of the realm of the desktop computer. They are not, however, "secure" in the strictest sense. Unfortunately, they are not portable; that is, they're different for every site, because the salts are different. For most users, however, regular tripcodes are plenty secure.

Tripcode Chart
`#tripcode`	->	`!3GqYIJ3Obs`
`anon#tripcode`	->	anon`!3GqYIJ3Obs`
`##tripcode`	->	`!!yIk1wB2J`*
`#tripcode#tripcode`	->	`!3GqYIJ3Obs!!yIk1wB2J`*
*`yIk1wB2J` is what http://kei.iichan.net/sand/ generates; it will vary from site-to-site.

(in)Famous Tripcodes
`#`	->	`!8NBuQ4l6uQ` - on wakaba, anyway.
`SovietRussia#deadjew`	->	SovietRussia`!lM51PoudCg`
`moot#faggot`	->	moot`!Ep8pui8Vw2` - ~~4chan: results in an autoban.~~
`MODD#withtripcode`	->	MODD`!5JrU4QOlH6` - Very DQN.
`#ｋａｍｉ`	->	`!yGAhoNiShI` - This is an in-joke in Japan.

A few trick tripcodes
`#^2MjSVc"`	->	`!1.G.o.o.D.`
`#7qQ6`	->	`!ABCDEDEZEY.`
`#cZi1O;4k`	->	`!dWFvipper.`
`#NM.nqeAO`	->	`!snoopyh1Ug`
`#^vp*!sA3`	->	`!REDREDLOGo`
`#OlJF(N>,`	->	`!magic.LANs`
`#:mlSFrnI`	->	`!skub.8lsXc`