×

Methods and systems for key recovery for a token

  • US 7,822,209 B2
  • Filed: 06/06/2006
  • Issued: 10/26/2010
  • Est. Priority Date: 06/06/2006
  • Status: Active Grant
First Claim
Patent Images

1. A method of recovering keys, comprising:

  • generating a key transport session key;

    deriving, by a processor, a key encryption key based on a server master key and an identification associated with a token;

    encrypting the key transport session key with the key encryption key as a first wrapped key transport session key;

    retrieving an encrypted storage session key and an encrypted private key from an archive;

    decrypting the encrypted storage session key with a server storage key as a storage session key;

    decrypting the encrypted private key with the storage session key;

    encrypting the decrypted private key with the key transport session key as a wrapped private key; and

    forwarding the wrapped private key and the first wrapped key transport session key.

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