Authenticated ID-based cryptosystem with no key escrow

Details Authenticated ID-based cryptosystem with no key escrow Authenticated ID-based cryptosystem with no key escrow

2007-05-22

2007-05-22

Moise, Emmanuel L. (Department: 2137)

Cryptography

Communication system using cryptography

Pseudo-random sequence scrambling

C380S255000, C380S259000, C713S169000

Reexamination Certificate

active

11357373

ABSTRACT:
A method and system are provided for determining a shared secret between two entities in a cryptosystem. A first random secret is selected that is known to the first entity and unknown to the second entity. A first intermediate shared secret component is determined using the first random secret and a system parameter. The first intermediate shared secret component is communicated to the second entity. A second random secret is selected that is known to the second entity, but unknown to the first entity. A second intermediate shared secret component is determined using the second random secret and the system parameter. The second intermediate shared secret component is communicated to the first entity. It is confirmed that both the first entity and the second entity know a non-interactive shared secret. An interactive shared secret is determined using the first random secret, the second random secret, and the system parameter.

REFERENCES:
patent: 6058188 (2000-05-01), Chandersekaran et al.
patent: 6792533 (2004-09-01), Jablon
patent: 2002/0018569 (2002-02-01), Panjwani et al.

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