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. 01, 2019
Filed:
Dec. 23, 2014
Applicant:
Cypress Semiconductor Corporation, San Jose, CA (US);
Inventors:
Hans Van Antwerpen, Mountain View, CA (US);
Jan-Willem van de Waerdt, San Jose, CA (US);
Assignee:
Cypress Semiconductor Corporation, San Jose, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 21/80 (2013.01); G06F 12/14 (2006.01); G06F 9/445 (2018.01); G06F 21/79 (2013.01); G09C 1/00 (2006.01); H04L 9/06 (2006.01);
U.S. Cl.
CPC ...
G06F 21/80 (2013.01); G06F 9/44573 (2013.01); G06F 12/1408 (2013.01); G06F 21/79 (2013.01); G09C 1/00 (2013.01); H04L 9/0637 (2013.01); H04L 2209/12 (2013.01);
Abstract
Encryption/decryption techniques for external memory are described herein. In an example embodiment, a device comprises an internal memory and an external memory controller. The internal memory is configured to store a key. The external memory controller is configured to encrypt, with the key, an address for an access operation to an external memory device to obtain an encrypted address, and to encrypt or decrypt a block of data for the access operation based on the encrypted address.