Cryptographic key split combiner

Details Cryptographic key split combiner Cryptographic key split combiner

2011-07-05

2011-07-05

Dinh, Minh (Department: 2432)

Cryptography

Key management

Having particular key generator

C380S044000, C380S046000

Reexamination Certificate

active

07974410

ABSTRACT:
A cryptographic key split combiner, which includes a number of key split generators for generating cryptographic key splits and a key split randomizer for randomizing the cryptographic key splits to produce a cryptographic key, and a process for forming cryptographic keys. Each of the key split generators generates key splits from seed data. The key split generators may include a random split generator for generating a random key split based on reference data. Other key split generators may include a token split generator for generating a token key split based on label data, a console split generator for generating a console key split based on maintenance data, and a biometric split generator for generating a biometric key split based on biometric data. All splits may further be based on static data, which may be updated, for example by modifying a prime number divisor of the static data. The label data may be read from a storage medium, and may include user authorization data. The resulting cryptographic key may be, for example, a stream of symbols, at least one symbol block, or a key matrix.

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