Patent ID: 7958374
Filing Date: 2011-06-07
Classification: G06F

Abstract:
1. A method for protecting digital information, comprising: converting a protected address range into a plurality of address blocks based on a preset conversion unit, and generating an address block rearranging rule using the address blocks as a parameter; when it is desired to load data into an address batch of the protected address range, converting the address batch into a plurality address blocks based on the conversion unit; and locating rearranged addresses of the address blocks in the protected address range according to the address block rearranging rule, and loading the data into the rearranged addresses, wherein in the step of converting the protected address range; an address conversion key inputted externally is accepted, and the address block rearranging rule is constructed using a number of the address blocks and the address conversion key; and the address block rearranging rule is to use an encryption arranging scheme which includes utilizing a data encryption standard that uses the address conversion key as an encryption code, encrypting a number sequence that is a binary expression of an address sequence constituted by the address blocks, expressing the encrypted binary number sequence in decimal to become an address block sequence, and exchanging an address i