sign
Sign a given payload using a private key.
This function takes a payload and a private key in Jwk (JSON Web Key) format, and returns a signature as a byte array. Additional options for the signing process can be provided via the options parameter.
Return
A ByteArray representing the signature.
Parameters
private
The private key in Jwk format to be used for signing. Must not be null.
payload
The payload/data to be signed. Must not be null.
options
Optional parameter containing additional options to control the signing process. Default is null.