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. 20, 2026
Filed:
Apr. 06, 2022
Applicant:
Advanced Micro Devices, Inc., Santa Clara, CA (US);
Inventor:
Kedarnath Balakrishnan, Bangalore, IN;
Assignee:
Advanced Micro Devices, Inc., Santa Clara, CA (US);
Primary Examiner:
Int. Cl.
CPC ...
G06F 12/14 (2006.01); H04L 9/06 (2006.01);
U.S. Cl.
CPC ...
G06F 12/1408 (2013.01); H04L 9/0631 (2013.01); G06F 2212/1052 (2013.01);
Abstract
A memory controller includes encryption circuits for encrypting write data to be written to an address in a RAM memory. A tweak value is provided based at least on the address. The tweak value is encrypted with Advanced Encryption Standard (AES) encryption using a first key. A first block write data is encrypted by manipulating it based on the encrypted tweak value, AES encrypting with a second key, and then manipulating the result based on the encrypted tweak value again. For subsequent blocks of write data, the encrypted tweak value is modified, and a similar operation is performed.