Abstract: Disclosed are an IC card asymmetric labelling system, an IC card built-in password input system and an IC card built-in password input method. The IC card asymmetric labelling system includes: an IC card, a payment terminal and a cloud end sever. The IC card includes a crypto-key unit and a communication module. The crypto-key unit stores a first private key which is used to sign a message transmitted from the IC card. The communication module establishes a communication connection with a cloud end through the payment terminal, or directly establishes a communication connection with the cloud end. The cloud end stores an open ID of the IC card and associated user information. The open ID is a hash value of a first public key of the IC card and is open to the public.

Abstract: A password input system included in IC card and a password input method included in IC card. The password input system included in IC card comprises: an IC card, a mobile terminal, a payment terminal and a cloud end; the IC card is provided with an input module for inputting a first password, a processor module connected with the input module, and a communication module connected with the processor module, the communication module establishing a communication connection with the cloud end via the payment terminal; the mobile terminal is in communication connection with the cloud end, and the mobile terminal is used for sending a second password input and set on the mobile terminal to the cloud end after passing an identity verification by the cloud end; and the cloud end is used for storing a third password, and is further used for updating the stored third password according to the second password, and comparing the first password input into the IC card with the third password.