Cryptography – Key management – Having particular key generator
Reexamination Certificate
2007-03-13
2007-03-13
Vu, Kim (Department: 2135)
Cryptography
Key management
Having particular key generator
C713S171000
Reexamination Certificate
active
09933720
ABSTRACT:
A method and systems provided for basis conversion in a cryptographic system. The method comprises the steps of a first correspondent transmitting an element represented in the first basis to an intermediate processor, the intermediate processor converting the element into a second basis representation and forwarding the converted element to the first correspondent who then uses the converted element in a cryptographic operation. A further embodiment of the invention provides for the intermediate processor to perform the basis conversion on a field element and then forward the converted element to a second correspondent. A still further embodiment of the invention provides for the correspondents in a cryptographic scheme making use of a bit string as a function of a sequence of traces of a field element, wherein the bit string is a shared secret for performing certain cryptographic operations.
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Gallant Robert
Lambert Robert
Mullin Ronald
Vanstone Scott A.
Blake Cassels & Graydon LLP
Certicom Corp.
Orange John R. S.
Truong T. B.
Vu Kim
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