Secret key device and method for mobile phone

Abstract

The invention belongs to the fields of computers and finance, and in particular relates to secret key security storage, data encryption and authentication for applications of mobile banking services, electronic payment and electronic commerce on mobile phones. The invention discloses a secret key device and method for a mobile phone. The device is provided with an audio input interface, an audio output interface, an audio coder and decoder unit and a secret key storage and security microprocessor unit. The device can realize the functions of the secret key security storage, the data encryption and the authentication. The device can be communicated with a mobile phone and other mobile devices in an audio signal mode. When the device is connected with the mobile phone and the other mobile devices, the audio signal input interface of the device and the headphone interfaces of the mobile phone and the other mobile devices are connected, the audio signal output interface is connected with mic interfaces of the mobile phone and the other mobile devices, and audio data coder and decoder programs are arranged in the mobile phone and the other mobile devices respectively. The device can store one or more secret keys for data encryption and authentication. The secret keys stored in the device can not be read. The device can be applied to the mobile banking service, the mobile payment, the electronic commerce and other occasions requiring the secret key security storage, the data encryption and the authentication.

Description

technical field [0001] The invention belongs to the fields of computers and finance, and in particular relates to providing safe key storage, data encryption and authentication for mobile banking, electronic payment and e-commerce applications on mobile phones. technical background [0002] In applications such as online banking, electronic payment, and e-commerce, data security is very important. In these applications, the safe storage of keys, data encryption and authentication are the security foundations of these applications. On ordinary computers, the encryption of these applications Key security storage devices mainly use USB KEY to store, and USB KEY also provides data encryption and authentication functions for these applications, but because mobile phones generally do not have USB HOST interface, USB KEY cannot be connected with mobile phones, so many mobile phones based on Banking, electronic payment, e-commerce and other applications mostly use passwords or file ...

AI Technical Summary

Problems solved by technology

[0002] In applications such as online banking, electronic payment, and e-commerce, data security is very important. In these applications, the safe storage of keys, data encryption and authentication are the security foundations of these applications. On ordinary computers, the encryption of these applications Key security storage devices mainly use USB KEY to store, and USB KEY also provides data encryption and authentication functions for these applications, but because mobile phones generally do not have USB HOST interface, USB KEY cannot be connected with mobile phones, so many mobile phones based on Banking, electronic payment, e-commerce and other applications mostly use passwords or file certificates to ensure security. In terms of security, it is far less secure than hardware key devices.

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