Lookup a the issuer of a certificate in the PKCS#11 storage.
The lookup is done using the issuer DN of the certificate. No certificate chain verification is done. Use a crypto library to make trust decisions.
When the operation is finished, callback will be called. You can then call lookup_issuer_async.end to get the result of the operation.
| certificate | |
| cancellable |
a Cancellable |
| callback |
a TaskReadyCallback to call when the operation completes |
| user_data |
the data to pass to callback function |