×

Time-based function back-off

  • US 8,806,219 B2
  • Filed: 08/23/2006
  • Issued: 08/12/2014
  • Est. Priority Date: 08/23/2006
  • Status: Active Grant
First Claim
Patent Images

1. A method comprising:

  • identifying a security token associated with a user;

    receiving an authentication attempt in a log-in user interface at a client machine, the authentication attempt comprising a credential associated with the security token;

    determining a time interval between the authentication attempt and a previous authentication attempt;

    comparing the time interval to a reset time limit;

    in response to the time interval being less than the reset time limit, maintaining, by the client machine, a number of authentication attempts in a counter;

    determining that the authentication attempt has failed;

    calculating, by a processing device of the client machine, using at least one of an exponential function or a linear function, a delay for accepting further authentication attempts associated with the security token in view of the number of authentication attempts;

    determining whether the calculated delay exceeds a limit value;

    reducing the calculated delay to the limit value in response to the calculated delay exceeding the limit value;

    adding a wait time specified by the security token to the calculated delay to calculate a total delay for accepting further authentication attemptsdetecting, by the client machine, a removal of the security token from the client machine; and

    in response to the removal, resetting, by the client machine, the number of authentication attempts in the counter.

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