14-06-2012 дата публикации
Номер: US20120151219A1
The present invention relates to a security USB storage medium generation and decryption method, and a medium having the record of a program for the generation of a security USB storage medium. The generation method of the present invention is for a USB host constituted by a USB connection port, an input interface, an output interface, a storage unit and a host control unit to code a USB storage medium constituted by a USB interface, a storage region and a USB control unit so as to generate a security USB storage medium, the method comprising the steps of: in the host control unit, outputting through the output interface information that requests for the input of a 1st user password to be set, when the connection of the USB interface to the USB connection port is detected; generating a random key and a disk key based on a 1st user password that is input from the input interface in response to the request for the input of the 1st user password; hashing the 1st user password and the random key after the random key and the disk key are generated, so as to generate a 1st encryption and decryption key; and generating a security volume header by dividing the storage region into a header and a body using the 1st encryption and decryption key, encrypting a 1st data and then storing the data in the header, and also generating a security volume body by encrypting a 2nd data using the disk key and then storing the data in the body. In this manner, no one is allowed to read the content stored in the USB storage medium through a disk dump for example without inputting a user password that was input during the generation of security volume, thereby increasing the security of the USB storage medium.
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