Cryptography – Key management – Having particular key generator
Reexamination Certificate
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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Scheidt Edward M.
Wack C. Jay
Dinh Minh
IP Strategies
Le David
TecSec, Inc.
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