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

Claim 7:
8. The data scrambling method according to claim 1, wherein in the calculating of the adjustment rank, the plain code is divided into a plurality of sub-plain-codes and an adjustment rank corresponding to each of the plurality of sub-plain-codes is calculated using an encoding table (ET) corresponding to each of the plurality of sub-plain-codes and the random number,
in the determining of the cipher code, a plurality of sub-cipher-codes corresponding to appearance frequency ranks of the plurality of sub-plain-codes is determined using the respective adjustment rank corresponding to each of the plurality of sub-plain-codes and the ECC table including information of the sub-cipher-codes corresponding to the appearance frequency ranks of the plurality of sub-plain-codes and the plurality of sub-cipher-codes is combined to determine the cipher code, and
the calculating of the adjustment rank and the determining of the cipher code operate in parallel for the plurality of sub-plain-codes.