Method and system for variable password access
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United States of America Patent
Stats
-
Oct 28, 1997
Grant Date -
N/A
app pub date -
Dec 30, 1994
filing date -
Dec 30, 1994
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A method and system are provided for controlling access to a data processing system through the use of a variable password. In one embodiment, the invention substitutes the value of a variable into an expression contained in a predefined password, evaluates the expression and password, and compares the result of the valuation of the password to a character string input to the data processing system, granting access if they are identical. A range of values of certain characters of the password may be permitted. The password may require that certain characters be entered within a defined time interval measured from the entry of other characters. The values of environment variables, which are referenced by the variable password, may change from time to time, as a function, for example, of the current time or temperature or system utilization.
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