Method for binding hardware encryption trans-flash (TF) card with mobile phone subscriber identity module (SIM) card

Abstract

The invention discloses a method for binding a hardware encryption trans-flash (TF) card with a mobile phone subscriber identity module (SIM) card. The method is characterized in that: encryption / decryption module hardware is added on a storage medium of the TF card, after the TF card is bound with the corresponding SIM card, the TF card has functions of key generation, data storage and data encryption / decryption, supports all conventional encryption algorithms and encrypts the whole process from storage, transmission, receiving to backups; encryption files are reliable; processing speed is high, cracking is avoided, a plurality of packaging types such as StandardSD, MiniSD, MicroSD and the like can be adopted, the SIM card bound with the TF card has the same strong equipment access ability as an ordinary secure digital (SD) card, high data storage capacity, can be synchronously upgraded and extended, and is convenient and flexible in use; moreover, design cost is reduced, and production process and structure can be simplified; and illegal use of the data card and illegal acquisition of the stored data in the data card are effectively prevented after the data card is lost or stolen. The invention can be widely used in a personal digital assistant (PDA), the mobile phone, a laptop, a personal computer (PC) and various terminals with an internal or an external SD card slot.

Description

technical field [0001] The present invention relates to a technology for selling and applying a mobile communication SIM / USIM / UIM card and TF memory card as a whole product after binding H04M telephone communication technology in the international patent classification, especially a kind of hardware encryption TF card and mobile phone SIM card Binding method. Background technique [0002] At present, the commonly used SD card, that is, Secure Digital Memory Card, translated into Chinese as a safe digital card, is a new generation of memory devices based on semiconductor flash memory, widely used in portable devices, such as mobile phones, digital cameras, Personal Digital Assistant (PDA) and multimedia players, etc. The SD card was jointly developed by Panasonic, Toshiba and SanDisk in August 1999. SD memory card, the size of a postage stamp, weighs only 2 grams, but it has high memory capacity, fast data transfer rate, great mobility flexibility and good security. The SD...

AI Technical Summary

Problems solved by technology

However, this method also has disadvantages: 1. You need to set up an encrypted SMS folder in advance; 2. The operation is more cumbersome, and the same file exists in multiple places after restoration, all occupying memory independently, and if you want to delete it, you must go to the above three places If you delete them all, you will accidentally leave evidence, and the "commonly used templates" is generally not password-protected; 3. Because the text messages occupy the memory of the mobile phone, so you can't save a lot of files in this way; 4. The maximum capacity of each MMS is 300k, and the size of the saved file cannot exceed this limit; 5. Now only pictures, audio files and video files can be saved, and files in other formats cannot be saved yet

[0007] On this basis, if there are a large number of files to be encrypted and stored, and the method of directly storing them in the SIM card, due to some limitations of the SIM card itself, there are still some difficulties

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