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:
Jun. 23, 2026
Filed:
Jun. 21, 2024
International Business Machines Corporation, Armonk, NY (US);
Rajat Rao, Bangalore, IN;
Jonathan D. Bradbury, Poughkeepsie, NY (US);
Louis P. Gomes, Poughkeepsie, NY (US);
Reinhard Theodor Buendgen, Tuebingen, DE;
Volker Urban, Boeblingen, DE;
INTERNATIONAL BUSINESS MACHINES CORPORATION, Armonk, NY (US);
Abstract
A cipher instruction is executed that includes encrypting a confidential value. A power block sequencing value is obtained as input to the cipher instruction, and a mask value is generated using the encrypted confidential value and the power block sequencing value. A cipher operation is performed on at least a portion of a message specified by the cipher instruction using the mask value. The power block sequencing value is updated, based on performing the cipher operation of the at least the portion of the message, to provide an updated power block sequencing value to be used in re-execution of the cipher instruction based on the cipher instruction being interrupted. The updated power block sequencing value is to be provided as input to the cipher instruction based on the cipher instruction being re-executed to re-generate the mask value to be used in continuing the cipher operation of the message.