[ Version ( since = "3.0" ) ]
public async bool sign (string userid, CipherHash hash, MimePart ipart, MimePart opart, int io_priority, Cancellable? cancellable = null) throws Error
Asynchronously converts the (unsigned) part ipart into a new self-contained MIME part opart.
This may be a multipart/signed part, or a simple part for enveloped types.
When the operation is finished, callback will be called. You can then call sign.end to get the
result of the operation.
| this | |
| userid |
a private key to use to sign the stream |
| hash |
preferred Message-Integrity-Check hash algorithm |
| ipart |
input MimePart |
| opart |
output MimePart |
| io_priority |
the I/O priority of the request |
| cancellable |
optional Cancellable object, or null |
| callback |
a TaskReadyCallback to call when the request is satisfied |
| user_data |
data to pass to the callback function |