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. 21, 2023
Filed:
Nov. 29, 2021
Snowflake Inc., Bozeman, MT (US);
Benoit Dageville, Foster City, CA (US);
Peter Povinec, Redwood City, CA (US);
Philipp Thomas Unterbrunner, Belmont, CA (US);
Martin Hentschel, San Mateo, CA (US);
Snowflake Inc., Bozeman, MT (US);
Abstract
A method for encrypting database files includes generating a mapping for a plurality of encrypted files. A first encrypted file of the plurality of encrypted files is encrypted with a first encryption key. The method includes generating a second encrypted file by re-encrypting, for a period of time, data in the first encrypted file using a second encryption key. The first encrypted file remains accessible to one or more queries during the period of time. The method includes updating the mapping to associate the second encrypted file with the first encrypted file. The mapping is updated after the second encrypted file has been generated. The method includes preventing a query from accessing the first encrypted file after the second encrypted file has been generated.