Method with privacy protection function for validating creditability of public terminal

Abstract

The invention relates to a method with a privacy protection function for validating the creditability of a public terminal, which can validate the creditability of the public terminal and can protect the privacy of the public terminal. A dependable computing module and a near-field wireless communication module (NFC) are arranged in a key service computing device, a common user holds a mobile terminal with the NFC communication module, before a public computer is used for carrying out a business transaction, the user holding the mobile terminal is close to the computer and sends a validating request through an NFC channel, the dependable computing module in the computer carries out Hash operation on several key content information in a system, then carries out signing on Hash values by directly using an anonymous attestation protocol, and sends signature data to the mobile terminal of the user through the NFC channel, the mobile terminal of the user carries out validation on signatures, and validation results are displayed through a screen of the mobile terminal. Through the method, a user extremely intuitively judges whether a computer for carrying out transactions is credible, thereby determining subsequent transaction actions; and because a direct anonymous authentication technology is adopted, the identity privacy of an authentication computer also can be protected.

Description

technical field [0001] The invention relates to a public terminal credibility verification method capable of verifying the credibility of a public terminal and protecting the privacy of the public terminal, which has a privacy protection function. Background technique [0002] With the rapid popularization of bank electronic transactions, many businesses can be carried out on public terminals such as ATMs in public places. Computing devices in public places generally do not have professional security protection measures, which has brought opportunities for many malicious attackers. There have been many incidents of ATM machines being tampered with and passwords of cashiers stolen. To prevent such incidents from happening again, the credibility of business-critical machines in public places must be ensured. A feasible way is to add a trusted computing module to computing devices in public places, and conduct strict verification from machine startup to software operation. Ho...

AI Technical Summary

Problems solved by technology

However, this method is too professional and technical, and it is difficult for ordinary users to make intuitive judgments

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