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:
Aug. 24, 2010
Filed:
Jan. 16, 2002
Yoon Seok Yang, Seoul, KR;
Yoon Seok Yang, Seoul, KR;
LG Electronics Inc., Seoul, KR;
Abstract
Disclosed is an apparatus for encrypting/decrypting a real-time input stream. The present invention includes a control unit, a key schedule unit, and a block round unit. Accordingly, the present invention realizes the encryption and decryption of AES algorithm in a manner of hardware, thereby enabling to carry out the encryption and decryption of the real-time input stream real-timely. And, the present invention finds the key for encryption or decryption of one block every round when realizing the encryption and decryption of the AES algorithm in a hardware manner, and then outputs the found keys to the block round unit. The present invention reduces the size of the key register required for the encryption/decryption of block data, thereby enabling to reduce a size of hardware as well as cost of product.