Method for revoking a digital signature

Details Method for revoking a digital signature Method for revoking a digital signature

2011-06-07

2011-06-07

Pich, Ponnoreay (Department: 2435)

Electrical computers and digital processing systems: support

Multiple computer communication using cryptography

Central trusted authority provides computer authentication

C713S155000, C713S156000

Reexamination Certificate

active

07958349

ABSTRACT:
A method and apparatus for revoking a digital signature using a signature revocation list. In one embodiment, the method includes generating the signature revocation list to indicate revocation status of a signature. The signature is created from an encryption key and a document. The method also includes computing an identifier of the signature in the signature revocation list based on contents of the signature. The method further includes publishing the signature revocation list for access by users of the document.

REFERENCES:
patent: 2002/0004773 (2002-01-01), Xu et al.
patent: 2005/0065799 (2005-03-01), Dare et al.
patent: 2005/0132194 (2005-06-01), Ward
patent: 2007/0101146 (2007-05-01), Louch et al.

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