Cryptography – Key management – Having particular key generator
Reexamination Certificate
2011-06-28
2011-06-28
Zia, Syed A. (Department: 2431)
Cryptography
Key management
Having particular key generator
C380S044000, C380S028000, C380S030000, C380S277000, C380S278000, C380S282000, C713S171000, C713S168000
Reexamination Certificate
active
07970135
ABSTRACT:
In a method for the secure, distributed generation of an encryption key for a cryptographic method, where the encryption key, as well as a public key are generated using deterministic methods from a large random number (seed), the seed (S) is generated on the user side by consulting variables known only to the user, and a public key (V) that is transmitted in advance from the trust center. Generation information suitable for generating the seed and, on the basis of which, the seed is able to be derived deterministically from the trust center, by consulting information known only to the center, is produced on the user side, and transmitted to the trust center to create the seed in parallel.
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Deutsche Telekom AG
Kenyon & Kenyon LLP
Zia Syed A.
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