A method of data decryption for the physical image of a flash memory chip

Abstract

A method of data decryption for the physical image of a flash memory chip includes the following steps: 001—Zero-filling the logical data of a USB flash drive to obtain the physical data, removing the management bytes in the physical data to obtain a key; 002—Dividing area for the key according to the structure of the flash memory chip to obtain the algorithm of the main control key. The way of data storage is discovered through multiple experiments: The data stored on the chip is the data generated from the XOR operation on the logical data with the key from encryption algorithm. All the keys generated by the main control are obtained through zero-filling of the logical data, and their encryption method can be obtained through simple analysis on all the keys. The data extracted from the flash memory chip when the USB flash drive is damaged will be readable.

Dependencies are inferred from the claim text.