Public key certificate issuing system, Public key certificate issuing method, digital certification apparatus, and program storage medium
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United States of America Patent
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N/A
Issued Date -
Aug 8, 2002
app pub date -
Jan 9, 2002
filing date -
Jan 10, 2001
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A public key certificate issuing system is disclosed which comprises a certificate authority for issuing a public key certificate used by an entity, and a registration authority which, on receiving a public key certificate issuance request from any one of entities under jurisdiction thereof, transmits the received request to the certificate authority. The certificate authority, having a plurality of signature modules each executing a different signature algorithm, selects at least one of the plurality of signature modules in accordance with the public key certificate issuance request from the registration authority, and causes the selected signature module to attach a digital signature to message data constituting a public key certificate.
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