×

System, method, and program for managing a user key used to sign a message for a data processing system

  • US 8,307,098 B1
  • Filed: 08/29/2000
  • Issued: 11/06/2012
  • Est. Priority Date: 08/29/2000
  • Status: Active Grant
First Claim
Patent Images

1. A method for managing a user key used to sign a message for a data processing system, said method comprising:

  • assigning a user key to a user and storing the user key in an encrypting data processing system utilized to encrypt messages;

    encrypting the messages with the user key;

    storing an associated key in the encrypting data processing system and encrypting the user key with the associated key to obtain an encrypted user key, wherein said associated key comprises a private key;

    said encrypting data processing system communicating at least one encrypted message together with the encrypted user key to a recipient system in order to permit validation of an association of the user with the encrypted messages by the recipient system; and

    thereafter, preventing validation of the association of the user with messages by revoking the associated key at the encrypting data processing system so that the encrypting data processing system is no longer able to decrypt the encrypted user key.

View all claims
  • 3 Assignments
Timeline View
Assignment View
    ×
    ×