Rijndael Encryption Beginner

[Pratiwi]

Hi..I'm new to Rijndael Encryption algorithm. Does anyone know where to find tutorial or code regarding this topic? I need to create a 256-bit Rijndael encryption. Any help will be appreciated.

Thanks...^^

[z05DSL3A]

Do you want to encrypt something using Rijndael (AES-256) from a 3rd party library or are you looking to implement Rijndael yourself?

Edit:
fixed typo

[sohguanh]

I believe there are already Open Source library that does that. Instead of re-inventing the wheel, why not collaborate with those developers to achieve better efficiency and optimal resource utilization?

Unless OP intend to have his own proprietary modified version of Rijndael Encryption algorithm ?

[Catfish]

http://www.schneier.com/book-applied-source.html
http://csrc.nist.gov/publications/fips/fips197/fips-197.pdf

Might help to read a book before jumping into code. Cryptography is complex.

[Pratiwi]

@Grey Wolf:
I'm looking to implement it by myself. Any recommended sources?

@CatFish:
Yeah, it's complex. That's why I need some guidance to implement this thing..The first link you gave, does it have the Rijndael encryption because I can't find one. Thanks...

[Catfish]

Yes it does.
Did you know modern browsers have a Search Page feature, usually at Ctrl-F?

[z05DSL3A]

Pratiwi,
There are, as Catfish says, implementations of Rijndael available from the first link^[1] catfish posted.
Crypto++® Library 5.6.1^[2] is a good library, I believe an earlier version is available from [1], look for Crypto32. Failing that, Googling "C++ implementing Rijndael " will get you lots of links to see how others have done it.

The second link (fips-197.pdf) looks like a good source of info on Rijndael, I have certainly added it to my library.

If you require more help then a little more info from you would be appreciated. We have no idea of your background in this area, you may well have more knowledge than me, as I only started looking at Cryptography earlier this year.



[1] http://www.schneier.com/book-applied-source.html
[2] http://www.cryptopp.com/

[tyranyflap]

Hello,

Is here someone who can crack a Rijndael text for me ?
I will explain why ...

It's for Geocaching. thats a worldwide game with GPS.. (just look it up its really cool)

Now i got a mystery (puzzle) that i can's solve..

There is QR code and when i scan it I see a text..
The maker of the puzzle said to me that the text is about 585 characters and figures (9x65)

Now he said that i must find the Key adn the precize Algorithme ...
Somebody nows what to do ??? i don't understand anything of it...

My email is [e-mail]
So please write me if u can help me with it and ill send u the text I got out of the QR code

Thanks

[Catfish]

@tyranyflap,
http://www.schneier.com/blog/archives/2009/07/new_attack_on_a.html

Please contact Bruce Schneier if you need help.