The invention discloses a digital certification generation method, which is characterized by the following: storing the information with encoding functional chip in the host; providing the private key of digital certification in the chip to affirm the safety of digital certification. The invention also provides two appliance methods of digital certification, which makes the receiver affirm the private key of sender information according to the digital certification and host. Hence, the invention prevents the private key from error identification due to abusing and tapping. |