Description:

The IDEA (InternationalData Encryption Algoritma) is a symetric-key block cipher that can encrypts 64-bits plaintexs to 64-bit ciphertexts using a 128-bit key, usedfor secure communications.  It is also can do descryption with thesame block   using  the same key.

It consists of 8 computationally  identical rounds and an output transformation. A 64-bit input block is divided into four 16-bit blocks which become theinput blocks to the first round of the algorithm. In each of the eighttotal rounds, the four subblocks are XORed, added, and multiplied withone another and with six 16-bit subkeys.

IDEA runs  in177 MBps  speed on hardware implementation.

The IDEA block cipheris found by J. L. Massey and X. Lay.

Specifications:

• Operates on 64-bit plain text block
• Uses128-bit key
• Can do encryption and decryption using the same block cipher (like DES).
• Be refered to be compatible to PCI port
• Uses 2 x 52 x 16 bit memory

• Making core specifications
• Capturing and verification of the behavioral and structural view using Alliance tools
• Implementation to symbolic layout
• The last verification (current stage)
• Convertion of the symbolic layout  to a real layout with a specific technology
• Making full report

Figure 1. The Block Diagram of IDEA Core
 
 
 

Figure 2. The IDEA Machine Block

Download The Source Code (*.tar.gz):

• IDEA machine (by Marta Dinata A.) click
• Key regulation (by Aditya TB) click
• Operation mode (by Sigit D) click
• I/O ports (by Marta Dinata A & Sigit D) click
• Main control (by Sigit D) click

Documentations:

• A paper about this design click

Links:

• The Alliance documentations
• Downloading the free Alliance tools

Maintainers and Authors :

IDEA Processor development team

current members :

• Marta Dinata A.
• Sigit Dewantoro
• Sarwono Sutikno

cores@opencores.org_NOSPAM