Dual-interface financial IC card with safety input and using method thereof

Abstract

The invention relates to the financial IC card field, especially to a dual-interface financial IC card with safety input and a using method thereof. The dual-interface financial IC card is composed of an antenna module, a power module, a dual-interface security chip, a touch sensing module, an input processing module, a radio frequency transmitter module and a radio frequency antenna. A multi-band dual-interface financial IC card is in communication connection with opposite equipment; the antenna module obtains a radio frequency electromagnetic wave signal and converts the signal into a current signal transmitted to the power module; and the power module carries out voltage stabilization on the current signal and then provides power. A user inputs authentication information by the touch sensing module and the information is converted into a corresponding analog signal; the input processing module converts the analog signal into a digital signal; the radio frequency transmitter module modules the digital signal to a high-frequency carrier wave and then the signal is emitted by the radio frequency antenna. The opposite equipment receives the high-frequency signal emitted by the radio frequency antenna; after demodulation, upper program of the opposite equipment carries out processing on the signal or an analysis is carried out to complete corresponding operations. Therefore, a risk of authentication information leakage is reduced and the IC card is suitable for various application environments.

Description

technical field [0001] The invention relates to the field of financial IC cards, in particular to a dual-interface financial IC card with safe input and a method for using it. Background technique [0002] The dual-interface financial IC card is a smart card currently widely used for user identification in the financial industry. The security smart chip in the card stores the user's personal account information, encrypted key and other content, which can be used for user identification and encryption of user communication data. The card uses the golden fingers arranged on it to carry out contact communication in accordance with ISO7816 standard, and can also use the coil antenna enclosed in it to carry out non-contact communication in accordance with ISO14443 standard. The dual-interface IC financial card is the main information carrier for users in the future financial industry. [0003] When the user uses the dual-interface financial IC card to perform related operations...

AI Technical Summary

Problems solved by technology

However, because many financial POS terminals on the market are not closely supervised by banks, there are phenomena such as anti-theft defects and even illegal transformations, and incidents of illegally obtaining cardholder passwords occur from time to time

[0004] In addition, in the existing dual-interface financial IC card, the dual-interface security chip contained inside has only a fixed frequency band, and the dual-interface security chip is an important part that cannot be replaced, so the signal transmitted through the antenna module is also the signal of the fixed frequency band, which is greatly improved. Limit the use environment of dual-interface financial IC cards

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