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:
Nov. 30, 2021
Filed:
May. 31, 2019
Applicant:
Arm Limited, Cambridge, GB;
Inventors:
Assignee:
ARM LIMITED, Cambridge, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 21/00 (2013.01); H04L 9/06 (2006.01); G06F 7/72 (2006.01); G09C 1/00 (2006.01);
U.S. Cl.
CPC ...
H04L 9/0631 (2013.01); G06F 7/724 (2013.01); G09C 1/00 (2013.01);
Abstract
A method for creating unified, efficient hardware implementations for multiple symmetric ciphers is described. For a chosen set of two or more distinct types of symmetric ciphers, a unified substitution box (SBOX) is designed that can implement most of the operations in a single hardware block, with small hardware blocks added before and after the unified SBOX for unique operations of each distinct symmetric cipher. Optimization techniques can also be applied to the linear operations and SBOX operations for the chosen set, rather than individually for each symmetric cipher, of the two or more distinct types of symmetric ciphers.