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:
Mar. 18, 2025
Filed:
Feb. 28, 2022
Dell Products L.p., Round Rock, TX (US);
Nitin Madan, Cupertino, CA (US);
Srisailendra Yallapragada, Cupertino, CA (US);
Mahadev Karadigudda, San Jose, CA (US);
Madhu Agrahara Gopalakrishna, Fremont, CA (US);
Srikanth Srinivasan, Bangalore, IN;
Dell Products L.P., Round Rock, TX (US);
Abstract
A method of blocking access to files encrypted with a compromised key by mapping keys and ranges of containers encrypted by the keys. Upon notification that a key is compromised, fencing a container range corresponding to data segments encrypted by the compromised key to prevent deduplication operations on the segments. The method makes a point-in-time copy of the filesystem managing the segments, wherein each file of the file system is represented as tree structure having a root level and other levels. The method iteratively inspects in a level-wise manner, each container in each level of the file trees of the files to identify containers having segments encrypted by the compromised key, and marks files corresponding to the identified containers as not readable to block the access to the files encrypted with the compromised key.