System for ensuring that the blinding of secret-key certificates is restricted, even if the issuing protocol is performed in parallel mode
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United States of America Patent
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Apr 18, 2000
Grant Date -
N/A
app pub date -
Feb 19, 1998
filing date -
Mar 27, 1995
priority date (Note) -
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Abstract
A cryptographic method is disclosed that enables the issuer in a secret-key certificate issuing protocol to issue triples consisting of a secret key, a corresponding public key, and a secret-key certificate of the issuer on the public key, in such a way that receiving parties can blind the public key and the certificate, but cannot blind a predetermined non-trivial predicate of the secret key even when executions of the issuing protocol are performed in parallel.
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