In commercial, financial, military and other fields, in particular in electronic commerce, electronic cheque, electronic shopping, electronic publishing and the protection of intellectual property rights digital signatures have practical applications.

• 数字签名在商业、金融、军事等领域，特别是在电子贸易、电子支票、电子购物、电子出版以及知识产权保护等方面都有实际的应用。