toCoseKey
Creates a CoseKey object for the key.
The resulting object contains Cose.COSE_KEY_KTY, Cose.COSE_KEY_PARAM_CRV, Cose.COSE_KEY_PARAM_D, Cose.COSE_KEY_PARAM_X and also Cose.COSE_KEY_PARAM_Y in case of a double-coordinate curve.
Parameters
additionalLabels
additional labels to include.