×

Backup system with multiple recovery keys

  • US 9,904,629 B2
  • Filed: 09/30/2015
  • Issued: 02/27/2018
  • Est. Priority Date: 05/31/2015
  • Status: Active Grant
First Claim
Patent Images

1. For a particular device in a set of related devices, each device in the set of related devices having a public key and a private key, a method for backing up data items synchronized between the set of related devices, the method comprising:

  • storing the backup data items encrypted with a set of data encryption keys;

    storing the set of data encryption keys encrypted with a master recovery key; and

    storing a copy of master recovery key data for each device in the set of related devices, each copy of the master recovery key data encrypted using a respective public key of a respective related device, wherein after a loss of access to the synchronized data by one of the related devices, said related device restores the backup data items by (i) decrypting a respective copy of the master recovery key data using the private key of said related device and (ii) decrypting the encrypted backup data item using the decrypted master recovery key data.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×