Patent ID: 11923000
Assignee: UNIVERSITY OF SEOUL INDUSTRY COOPERATION FOUNDATION
Field: Computer technology (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 9:
10. A data descrambling method performed by the memory controller coupled to the non-volatile memory device and performed on data scrambled in accordance with the data scrambling method according to claim 1, the method comprising:
receiving, by the memory controller, a read address from which a plain code is read;
reading, by the memory controller, a cipher code from the read address;
calculating, by the memory controller, a rank corresponding to the cipher code, using a decoding table (DT) including appearance frequency rank information of plain codes respectively corresponding to cipher codes, using a random number to calculate an adjustment rank; and
acquiring, by the memory controller, the plain code from a decoding cipher code (DCC) table including information of a respective plain code corresponding to a respective appearance frequency rank of the respective plain code.