Cryptography – Communication system using cryptography
Reexamination Certificate
2007-09-04
2007-09-04
Song, Hosuk (Department: 2135)
Cryptography
Communication system using cryptography
C380S044000, C380S046000
Reexamination Certificate
active
10901079
ABSTRACT:
A method of distributed cryptography for high consequence security systems which employs shared randomness between operating parties. Shared randomness is accomplished by sharing cryptographic keys stored in secure hardware tokens by potentially less secure software or general purpose computing units that perform distributed cryptography. The shared randomness is based on shared keys (at the tokens) and unique context. Shared random values are incorporated into the computation of partial results used in the distributed cryptographic calculation. The incorporation of shared randomness provides a hand-shake among the hardware tokens. When the operation is successful, a result is computed with assurance that the correct parties have taken part in forming the result. The hand-shake assures binding of operating parties and added system security.
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Frankel Yair
Yung Marcel M.
CQRCert
Song Hosuk
Steptoe & Johnson LLP
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