An encryption/decryption unit includes a first data encryption/decryption section for performing an encryption or decryption process, a first data substitution section for performing data substitution of an output from the first encryption/decryption section according to a predetermined permutation table, a second data encryption/decryption section for performing an encryption or decryption process for an output from the first data substitution section, a second data substitution section for performing data substitution of an output from the second data encryption/decryption section according to a predetermined permutation table, and a third data encryption/decryption section for performing an encryption or decryption process for an output from the second data substitution section.

 
Web www.patentalert.com

< Method and circuit to accelerate secure socket layer (SSL) process

< Method and apparatus to verify circuit operating conditions

> Interface surface printer

> Method and apparatus for generating a group of character sets that are both never repeating within certain period of time and difficult to guess
~ 00232