公开(公告)号：US20230336343A1

公开(公告)日：2023-10-19

申请号：US17957515

申请日：2022-09-30

Applicant: Dropbox, Inc.

Inventor： Jonathan Lee ,  Rajat Goel ,  Stas Ilinskiy ,  Wesley Rodriguez ,  April King ,  Joseph Eichenhofer

IPC: H04L9/14 ,  H04L9/08

CPC classification number: H04L9/14 ,  H04L9/0877

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. Using these keys, the system can 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.