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:
Feb. 07, 2023
Filed:
Jan. 29, 2020
Intel Corporation, Santa Clara, CA (US);
David M. Durham, Beaverton, OR (US);
Michael LeMay, Hillsboro, OR (US);
Michael E. Kounavis, Portland, OR (US);
Santosh Ghosh, Hillsboro, OR (US);
Sergej Deutsch, Hillsboro, OR (US);
Anant Vithal Nori, Bangalore, IN;
Jayesh Gaur, Bangalore, IN;
Sreenivas Subramoney, Bangalore, IN;
Karanvir S. Grewal, Hillsboro, OR (US);
Intel Corporation, Santa Clara, CA (US);
Abstract
A processor comprises a first register to store an encoded pointer to a memory location. First context information is stored in first bits of the encoded pointer and a slice of a linear address of the memory location is stored in second bits of the encoded pointer. The processor also includes circuitry to execute a memory access instruction to obtain a physical address of the memory location, access encrypted data at the memory location, derive a first tweak based at least in part on the encoded pointer, and generate a keystream based on the first tweak and a key. The circuitry is to further execute the memory access instruction to store state information associated with memory access instruction in a first buffer, and to decrypt the encrypted data based on the keystream. The keystream is to be generated at least partly in parallel with accessing the encrypted data.