×

Tamper resistant method and apparatus

  • US 6,073,237 A
  • Filed: 11/06/1997
  • Issued: 06/06/2000
  • Est. Priority Date: 11/06/1997
  • Status: Expired due to Term
First Claim
Patent Images

1. A tamper resistant method for securing a user'"'"'s data comprising:

  • initializing the presence of at least one user on a tamper resistant networked device using a first protocol; and

    establishing routine operations by the user on the network using a second protocol, wherein the first protocol comprises;

    the user sending a message to a network server;

    the server verifying the presence of a user record;

    the server creating a new record if an existing record does not exist;

    the server sending a random challenge to the user;

    the user signing the random challenge and sending the signed random challenge to the server;

    the server verifying the user signature and thereafter generating a session key for the initialization protocol, the server further signing the session key and sending the key back to the user;

    the user choosing a passphrase, encrypting the passphrase and sending the encrypted passphrase back to the server; and

    the server generating a symmetric key, the symmetric key encrypted by the server and sent to the user.

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