Cryptography – Key management – Having particular key generator
Reexamination Certificate
2007-09-28
2011-11-15
Shiferaw, Eleni (Department: 2437)
Cryptography
Key management
Having particular key generator
C380S044000, C380S281000, C380S284000, C380S286000, C713S166000
Reexamination Certificate
active
08059814
ABSTRACT:
A technique carries out seed (or key) derivation within an electronic apparatus (e.g., a hand holdable electronic apparatus such as a token, an authentication server, etc.). The technique involves acquiring a stored representation of a derived seed, the stored representation of the derived seed resulting from an earlier-performed cryptographic operation based on a higher-level seed. The technique further involves (i) performing a current cryptographic operation based on a stored representation of the higher-level seed, the current cryptographic operation resulting in a current representation of the derived seed, and (ii) providing a corruption detection signal indicating whether the current representation of the derived seed matches the stored representation of the derived seed.
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BainwoodHuang
Branske Hilary
EMC Corporation
Shiferaw Eleni
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