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:
Dec. 09, 2025
Filed:
Nov. 22, 2019
Microsoft Technology Licensing, Llc, Redmond, WA (US);
Panagiotis Antonopoulos, Redmond, WA (US);
Arvind Arasu, Redmond, WA (US);
Nitish Gupta, Seattle, WA (US);
Rajat Jain, Redmond, WA (US);
Raghav Kaushik, Kirkland, WA (US);
Hanumantha R. Kodavalla, Sammamish, WA (US);
Nikolas Ogg, Seattle, WA (US);
Ravishankar Ramamurthy, Redmond, WA (US);
Kunal Deep Singh, Seattle, WA (US);
Jakub Szymaszek, Issaquah, WA (US);
Jeffrey Michael Trimmer, Redmond, WA (US);
MICROSOFT TECHNOLOGY LICENSING, LLC, Redmond, WA (US);
Abstract
Methods for database recovery for encrypted indexes are performed by systems and devices. A query with a decryption key is received from a client device, where the query modifies an encrypted index of a database using a secure enclave. When events requiring remedial actions for the database occur during the querying, some transactions of the query and later queries are deferred, and a remedial action is initiated that includes restarting the database. A determination of the remedial action being unsuccessful in recovering the encrypted index causes the action to be re-performed until another query having the decryption key is received whereupon the action is performed again to recover the encrypted index utilizing the decryption key. Deferred transactions are then performed with the decryption key. When a database restarts for access without secure enclaves, the encrypted index for the database is invalidated, and the remedial actions are otherwise completed or discarded.