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:
Jan. 10, 2012
Filed:
Oct. 21, 2008
Mathieu Ciet, Paris, FR;
Augustin J. Farrugia, Cupertino, CA (US);
Filip Toma Paun, Menlo Park, CA (US);
Mathieu Ciet, Paris, FR;
Augustin J. Farrugia, Cupertino, CA (US);
Filip Toma Paun, Menlo Park, CA (US);
Apple Inc., Cupertino, CA (US);
Abstract
Disclosed herein are systems, methods, and computer readable-media for performing data encryption and decryption using a stream or block cipher with internal random states. The method includes splitting the input data into a predetermined number of blocks and processing each block. The processing includes creating sub-blocks, permuting the sub-blocks, replacing bytes using a lookup table, rotating bits, performing expansion and combining sets of bits. The element of randomness employed in this process allows for the same input to yield the same output, with differing internal states.