ISSUING IMPLICIT CERTIFICATES
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United States of America Patent
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N/A
Issued Date -
Sep 13, 2012
app pub date -
Mar 8, 2011
filing date -
Mar 8, 2011
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
Methods, systems, and computer programs for issuing an implicit certificate are disclosed. In some implementations, a certificate authority of an elliptic curve cryptography (ECC) system performs one or more operations for issuing the implicit certificate. A certificate request associated with a requester is received, and the certificate request includes a first element RU in a group. In response to receiving the request, a second element PU in the group is generated based on the first element RU. An implicit certificate CertU is generated based on the second element PU. Whether the public key QU of the requester corresponds to a trivial public key, such as an identity element of the group, can be determined. For example, the certificate authority can compute the public key QU of the requester based on the first element PU, the implicit certificate CertU, and a public key QCA of the certificate authority.
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