Registers – Calculators – Input-output calculator to indicator – printer – etc.
Patent
1975-08-25
1976-12-07
Cook, Daryl W.
Registers
Calculators
Input-output calculator to indicator, printer, etc.
340149R, G06K 500, H04Q 502
Patent
active
039964493
ABSTRACT:
An operating system authenticator for determining if an operating system being loaded in a computer is valid. A user's identification code or secret key which is unique to the operating system, and a verifier value which is a predetermined function of a valid operating system and the identification code are respectively stored. A hash function, which is a function of the operating system being loaded and the identification code, is generated by the authenticator. After the operating system is loaded, the hash function is used as an authenticating value and compared with the verifier value for determining the authenticity of the loaded operating system.
REFERENCES:
patent: 3611293 (1971-10-01), Constable et al.
patent: 3846622 (1974-11-01), Meyer
patent: 3892948 (1975-07-01), Constable
Attanasio Clement Richard
Belady Laszlo Antal
Arnold Jack M.
Cook Daryl W.
International Business Machines - Corporation
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