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.

Date of Patent:
Oct. 06, 2026

Filed:

Sep. 23, 2024
Applicant:

International Business Machines Corporation, Armonk, NY (US);

Inventors:

Patrick James Meaney, Poughkeepsie, NY (US);

Glenn David Gilda, Binghamton, NY (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04L 9/08 (2006.01); G06F 11/10 (2006.01); G06F 21/60 (2013.01);
U.S. Cl.
CPC ...
H04L 9/0891 (2013.01); G06F 11/106 (2013.01); G06F 21/602 (2013.01);
Abstract

Dynamic key reassignment for memory encryption keys, including: performing a key reassignment for a memory area by, for each memory address of a plurality of memory addresses in the memory area: reading data from a selected memory address by decrypting the data using a first encryption key stored in a first encryption key register, wherein the selected memory address is stored in a scrub address register incremented after each iteration of the key reassignment; and writing the data to the selected memory address by encrypting the data using a second encryption key stored in a second encryption key register.


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