akimp3

May 7th, 2005, 12:29

Hi,

I am searching attaks that work on the IDEA (complete 8 round) algorithm. I have found a paper entitled:New Weak-Key Classes of IDEA

by Alex Biryukov, Jorge Nakahara Jr, Bart Preneel, Joos Vandewalle.

I am familiar with the IDEA algo because I have implemented it in C as a part of my homework.

the problem is that I dont understand the Boomerang attak.

Here is the paper:

h++p://www.cosic.esat.kuleuven.be/publications/article-189.pdf

On page 4:

what is a differential pattern?

what is the definition of the reversed DELTA sign?

Is there anyone familiar with this attak who could explain it to me?

Thanks in advance

Akimp3

I am searching attaks that work on the IDEA (complete 8 round) algorithm. I have found a paper entitled:New Weak-Key Classes of IDEA

by Alex Biryukov, Jorge Nakahara Jr, Bart Preneel, Joos Vandewalle.

I am familiar with the IDEA algo because I have implemented it in C as a part of my homework.

the problem is that I dont understand the Boomerang attak.

Here is the paper:

h++p://www.cosic.esat.kuleuven.be/publications/article-189.pdf

On page 4:

what is a differential pattern?

what is the definition of the reversed DELTA sign?

Is there anyone familiar with this attak who could explain it to me?

Thanks in advance

Akimp3