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. 27, 2026
Filed:
Nov. 18, 2022
Dropbox, Inc., San Francisco, CA (US);
Jonathan Lee, Seattle, WA (US);
Stas Ilinskiy, Seattle, WA (US);
Dropbox, Inc., San Francisco, CA (US);
Abstract
A system, method, and computer readable medium is disclosed for accessing an object that is encrypted within at least a tertiary-level encryption key scheme. This includes receiving a request to access blocks making up an object by content management system and using a top-level encryption key from a key management service, a namespace encryption key from a namespace encryption key database, and a respective block encryption keys protecting the blocks making up the object. Furthermore, the system can rely on ephemeral keys to encrypt the namespace encryption keys, so that namespace encryption keys can be stored at the content management system. Using these keys, the system can decrypt the namespace encryption key using the ephemeral key, decrypt the block encryption keys using the namespace encryption key and decrypt the blocks using the block encryption keys, thereby providing access to the object.