The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 30, 2010
Filed:
Jun. 01, 2004
Yun Kyung Lee, Kyungsangbook-Do, KR;
Young Soo Park, Daejon, KR;
Young Sae Kim, Daejon, KR;
Sang Woo Lee, Daejon, KR;
Sung Ik Jun, Daejon, KR;
Yun Kyung Lee, Kyungsangbook-Do, KR;
Young Soo Park, Daejon, KR;
Young Sae Kim, Daejon, KR;
Sang Woo Lee, Daejon, KR;
Sung Ik Jun, Daejon, KR;
Electronics and Telecommunications Research Institute, Daejeon, KR;
Abstract
A rijndael block cipher apparatus including an operational unit that efficiently performs a round operation for encrypting/decrypting a rijndael block cipher and an encryption/decryption method thereof are disclosed. The rijndael block cipher apparatus is mounted in a mobile terminal such as a cellular phone and a PDA or a smart card, which requires a high-rate and small-sized cipher processor, and can encrypt and decrypt important data that requires security at high speed and perform the round operation with respect to upper 64 bits and lower 64 bits which are divided from 128-bit input data. Thus, the cipher apparatus can reduce the time required for encryption/decryption of the rijndael block cipher and the size of the apparatus.