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 Computer with password processing function and password processing method of computer

Details
Inventors: Morisawa, Toshikazu; Dewa, Koichi; Saito, Toshimitsu;
Assignee: Kabushiki Kaisha Toshiba (Kawasaki, JP)
Primary Examiner: Gregory; Bernarr E.
Assistant Examiner:
Attorney, Agent or Firm: Oblon, Spivak, McClelland, Maier, & Neustadt

A computer has a conversion module for converting a password to be registered into a compressed-bit row in accordance with a predetermined rule. A registration module stores the compressed bit row of the registered password in a backup RAM. A conversion module converts a password to be compared with the registered password into a compressed bit row. A comparison module compares the compressed bit row of the compared password with the compressed bit row of the registered password. Upon detecting a coincidence between the two compressed bit rows, a system activation module is activated to set the system to a access allowable state.

DETAILED DESCRIPTION A first object of the present invention is to provide a computer where limitation in the length of a password is reduced and illegal analysis of a password is prevented.
A second object of the present invention is to provide a computer where even if a user forgets his password, assistance therefor is easily given.
To accomplish the first object, a computer with a password processing function according to the first aspect of the present invention comprises an input means for inputting a first password and a second password.
A first conversion means converts the first password inputted from the input means into a first compressed bit row in accordance with a predetermined rule.
A storage means stores the first compressed bit row converted by the first conversion means.
A second conversion means converts the second password inputted from the input means into a second compressed bit row in accordance with the same rule of the first conversion means.
A comparison means compares the second compressed bit row converted by the second conversion means with the first compressed bit row stored in the storage means and a setting means sets, when as a result of the comparison by the comparison means the second compressed bit row coincides with the first compressed bit row, the computer to an access allowable state.
To accomplish the second object, a computer with a password processing function according to the second aspect of the present invention comprises an input means for inputting a first password, a second password and a third password and means for incorporating an application program stored in an outer storage means outside the computer for registering the first password into the computer.
A first registration means registers the first password inputted from the input means as a first registration password in accordance with the incorporated application program.
A second registration means registers the second password inputted from the input means as a second registration password in accordance with a program originally stored in the computer



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