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. 15, 2019
Filed:
Dec. 18, 2015
Intel Corporation, Santa Clara, CA (US);
Reshma Lal, Hillsboro, OR (US);
Steven B. McGowan, Portland, OR (US);
Siddhartha Chhabra, Hillsboro, OR (US);
Gideon Gerzon, Zichron Yaakov, IL;
Bin Xing, Hillsboro, OR (US);
Pradeep M. Pappachan, Hillsboro, OR (US);
Reouven Elbaz, Hillsboro, OR (US);
Intel Corporation, Santa Clara, CA (US);
Abstract
Technologies for cryptographic protection of I/O data include a computing device with one or more I/O controllers. Each I/O controller may generate a direct memory access (DMA) transaction that includes a channel identifier that is indicative of the I/O controller and that is indicative of an I/O device coupled to the I/O controller. The computing device intercepts the DMA transaction and determines whether to protect the DMA transaction as a function of the channel identifier. If so, the computing device performs a cryptographic operation using an encryption key associated with the channel identifier. The computing device may include a cryptographic engine that intercepts the DMA transaction and determines whether to protect the DMA transaction by determining whether the channel identifier matches an entry in a channel identifier table of the cryptographic engine. Other embodiments are described and claimed.