According to Douding.com's inquiry, SWUKey is the driver software of tax UKey digital certificate. Tax UKEY is a security driver software for online tax payment launched by State Taxation Administration of The People's Republic of China, People's Republic of China (PRC). Only users who have installed the digital certificate driver of tax UKEY can use UKEY to log on to the national tax platform for tax handling and inquiry. It is a necessary online tax payment security driver software for enterprises and natural persons in China.

Tax UKEY is mainly used as a hardware carrier for securely storing digital certificates and private keys, which can be encrypted in hardware. It combines the data encryption and digital signature functions of digital certificate, and can be widely used in CA center, online banking, e-government and other industries.