Electrical computers: arithmetic processing and calculating – Electrical digital calculating computer – Particular function performed
Reexamination Certificate
2006-02-28
2006-02-28
Morse, Gregory (Department: 2134)
Electrical computers: arithmetic processing and calculating
Electrical digital calculating computer
Particular function performed
C708S254000, C708S255000, C380S044000, C380S046000
Reexamination Certificate
active
07007050
ABSTRACT:
A pseudo-random number generator (PRNG) for a cryptographic processing system is disclosed in which the PRNG is reseeded at each instance of input entropy and in which a standard timestamp variable used in determining random sequence outputs is replaced with a running counter. The method employed by the PRNG demonstrates increased resistance to iterative-guessing attacks and chosen-input attacks than those of previous technologies. The PRNG is suitable for use in, for example, a mobile telephone system for accomplishing secure communications.
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Morgan & Finnegan , LLP
Morse Gregory
Nokia Corporation
Tran Tongoc
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