Digital information protecting method and apparatus, and computer accessible recording medium

摘要

In a method for protecting digital information, a processor converts a protected address range into a plurality of address blocks of a storage device based on a preset conversion unit, and generates an address block rearranging rule using the address blocks as a parameter. When it is desired to load data into a space of an address batch of the protected address range, the processor converts the address batch into a plurality of address blocks based on the conversion unit, locates rearranged addresses of the address blocks in the protected address range according to the address block rearranging rule, and loads the data into spaces of the rearranged addresses.

主权项

1. A method for protecting digital information, comprising:
dividing, using a processor, a protected address range into a plurality of address blocks of a storage device 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 a space of an address batch of the protected address range, dividing, using the processor, the address batch into a plurality of address blocks based on the conversion unit; and locating, using the processor, rearranged addresses of the address blocks in the protected address range according to the address block rearranging rule, and loading, using the processor, the data into spaces of the rearranged addresses; wherein, the conversion unit has a size of (n) bits, where (n) is a positive integer, and the size of the conversion unit is smaller than a size of an address that constitute the protected address range; wherein, an irreproducible random sequence arranging scheme is used as the address block rearranging rule, and includes utilizing operation information of internal hardware of a computer to generate a random number sequence ranging from 0 to the number of the address blocks, and exchanging an ith address block with an address block having an ith position in the random number sequence to thereby generate an address conversion table; and the rearranged addresses of the address blocks in the protected address range are located based on the address conversion table.