Re: [oc] submit for IDEA processor

[tom st denis <tomstdenis@yahoo.com>]

--- MARTADINATA A <marta@vlsi.itb.ac.id> wrote:
> Hi, Damjan
>   
>   We think we must submit our core design project about
> IDEA(International
>   Data Encryption Algorithm) processor into the opencores main page
> in
>   order to be visible by everyone. So, we can make a great discussion
> 
>   to build it.
> 
>   For all of you know that its general specifications are :
>   
>   IDEA is a block cipher that can encrypts 64-bit plaintext to 64-bit
>   chipertext using a 128-bit key. It's consists of 8 computationally
>   identical round and  an output transpormation. Its also can do
>   description with the same block using the same key. It will be used
>   widely for communications that need to make  secret communicatios
>   such as between a bank and its branch, company and its branch,
>   government office and important department, a post commando and
> others
>   post in military organisations, and for any public communications. 
> 
>   
>   Of course, that will have any control circuits for controlling 
>   the key and direction and have a memory. And also the design of
> this
>   core refered to be compatible to ISA port that has a 16-bit bus
> data.   
>   
>   The design and verification will use a excelent complet tool packet
>   ALLIANCE that can be used for designing and verification from the
>   behavioral and structural VHDL descryption up to the real layout. 
> 
>   The IDEA block cipher is found by J.L. Massey and X. Lay and have
> been 
>   patented in US patent (5,214,703). It was filed May 16 1991 and
> assigned 
>   to Ascom Tech AG (Bern), with priority data given as May 18 1990
> from
>   the original Swiss patent. See : 
>         Handbook of Applied Cryptography by Alfred J. Menezes et al 
> and 
>         http://www.uspto.gov/patft/index.html 
>   
>   We will just use that algorithm to design a IDEA core in which We
> will
>   make consistently its patent or copyright put on our developed
> core.
>   We think that it is noproblem as long as for a core. 

You cannot sell the core however, at any time.

>   The IDEA algorithm is more secret than DES algoritma because the
> IDEA
>   secret key, 128-bit, is longer than DES key, 56-bit. And also the
> IDEA
>   round, 8, is less than the DES round, 16. So, the IDEA processor
> will be 
>   faster and more secret than DES. 

I doubt IDEA is much faster since it requires multiplications in
Z65537.  

Tom

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