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Password security method
| Details |
Inventors: Moriyama, Junichi;
Assignee: Fujitsu Limited (Kawasaki, JP)
Primary Examiner: Tarcza; Thomas H.
Assistant Examiner: Cain; David
Attorney, Agent or Firm: Staas & Halsey
Disclosed is a password security method in a man-machine system for keeping the secrecy of a password during a setting process of the system. To keep not only the secret of the password but also the presence of the password from unauthorized users, the method comprises a prompt displaying step for prompting to enter an equipment name and not prompting to enter the password; a password discriminating step to discriminate whether or not a correct password is entered; a step for entering a normal mode when the correct password is not detected; and step for entering a password mode when the correct password is detected. |
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DETAILED DESCRIPTION To prevent this, an object of the present invention is to provide a password security system for a man-machine system in which the password is securely protected by not letting a user perceive the existence of the password.
To attain the above object, there is provided, according to the present invention, a password security method for a man-machine system in which, to start a setting process of the man-machine system, a special code, password and return code are sequentially entered into the system.
When the password is judged to be correct, a password-required mode is activated, and when the password is judged to be wrong, a password not-required mode is activated.
When the entered data includes no return code and includes the special code, the system displays an other code instead of displaying the entered password.
When the input data includes a return code, the system judges whether or not the entered password is correct, and displays the result of the judgement.
In operation, to start the setting operation of the man-machine system, log-in data is entered into the system.
The log-in data may be an equipment number.
Thereafter, a special code such as "-" is entered, and then a password.
The special code shall be selected from infrequently used codes.
The password to be entered after the special code is displayed with a series of "X" characters or the like.
Then the entered log-in data and password are checked sequentially.
If the password has not been entered, a normal mode is enabled.
If the password has been entered and if the same is correct, the correctness is displayed to start a password mode.
If the password is wrong and if the log-in data is correct, no particular message is displayed but the normal mode is simply started.
In this way, the existence of the password is concealed from a user in the normal mode.
Namely, the existence of the password will not be perceived by a user who does not know the password.
The present invention, therefore, can surely protect the password
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Audio Signal Processing 
