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IDEA core: Overview Details Name: idea Created: 25-Sep-2001 10:15:03 Updated: 03-Jul-2002 17:21:54 CVS: browse Other project properties Category :: Crypto core Development status :: Planning Project maintainers sigit Marta Dinata A. sarwono Statistics view Description The IDEA (International Data Encryption Algorithm) is a symmetric-key block cipher that can encrypts 64-bits plaintexts to 64-bit ciphertexts using a 128-bit key, used for secure communications. It is also can do decryption with the same 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 the input blocks to the first round of the algorithm. In each of the eight total rounds, the four sub-blocks are XOR-ed, added, and multiplied with one another and with six 16-bit sub-keys. IDEA runs 177 Mbps in speed on hardware implementation. The IDEA block cipher was found by J. L. Massey and X. Lay. Specifications Operates on 64-bit plain text block Uses 128-bit key Can do encryption and decryption using the same block cipher (like DES). Be referred to be compatible with PCI bus Uses 1 micron technology Design stages Making core specifications Capturing and the verification of the behavioral and structural view using Alliance tools Implementation to symbolic layouts Last verification (current stage) Converting symbolic layouts to real layouts with a specific technology Making the full report Figure 1. The Block Diagram of IDEA Core Figure 2. The IDEA Mechine Block Links To get files of IDEA core from cvsweb To see the Alliance documentations To download free Alliance tools