Patent ID: 7162646
Filing Date: 2007-01-09
Classification: G06F,G11B

Abstract:
1. A disk anti-copy system, which prepares a device key table (Kd Table) in a device and pre-records a plurality of media key blocks (MKB's) in a disk for effective control of the device and disk anti-copy, the system comprising: a storage database, which stores one Kd Table for each of the devices; an operating module, which generates a random number series, performs a logic operation, a cipher algorithm, and a decipher algorithm; a media key block type 1 (MKB1) generating module, which determines an upper limit (Smax) of the MKB1 according to the number of the plurality of device keys (Kd's) in the Kd Table and fills in the MKB1 the random number series generated by the operating module, producing the MKB1; a media key block type 2 (MKB2) generating module, which, for each of the device key in the Kd Table, performs the decipher algorithm operation on the random number series Dt a recording module, which prepares each of the Kd Tables in the corresponding device and pre-records the MKB1 and the MKB2 on the disk.