Program use authorization method

Details Program use authorization method Program use authorization method

2007-04-10

2007-04-10

Barrón, Jr., Gilberto (Department: 2132)

Information security

Access control or authentication

Stand-alone

C726S009000, C726S020000, C713S172000, C705S059000

Reexamination Certificate

active

10190735

ABSTRACT:
First and second codes specific to each program are prepared. The first code is encrypted to generate a first encrypted code that encrypts the second code to generate a second encrypted code. The second encrypted code is stored in a memory medium. An install key that the user needs to input is made by combining the first code and the second code. To authorize installation, the first code contained in the input install key is converted into the first encrypted code in the medium, and a computer on which a program is installed obtains the first encrypted code and generates the second encrypted code by encrypting the second code contained in the install key on the basis of the first encrypted code. Then, the computer reads out the second encrypted code stored in the medium and compares both of them, thereby giving the installation authorization.

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patent: 5710817 (1998-01-01), Sjooquist
patent: 5952641 (1999-09-01), Korshun
patent: 6169976 (2001-01-01), Colosso
patent: 6226747 (2001-05-01), Larsson et al.
patent: 6317830 (2001-11-01), Stolz
patent: 2001/0042054 (2001-11-01), Dietrich et al.
patent: 11-154086 (1999-06-01), None
patent: 2001-216149 (2001-08-01), None

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