pub unsafe extern "C" fn C_SignEncryptUpdate(
    hSession: CK_SESSION_HANDLE,
    pPart: CK_BYTE_PTR,
    ulPartLen: CK_ULONG,
    pEncryptedPart: CK_BYTE_PTR,
    pulEncryptedPartLen: CK_ULONG_PTR
) -> CK_RV