公开(公告)号：US12095742B2

公开(公告)日：2024-09-17

申请号：US17497854

申请日：2021-10-08

Applicant: MARKANY INC.

Inventor： Jonguk Choi

IPC: H04L9/40 ,  G06F21/10 ,  G06F21/16 ,  G06F21/60 ,  G06T1/00 ,  H04L9/08

CPC classification number: H04L63/0428 ,  G06F21/16 ,  G06F21/602 ,  G06T1/005 ,  H04L9/088 ,  H04L63/10 ,  G06F21/1063 ,  G06T1/0021 ,  G06T2201/0051 ,  G06T2201/0052 ,  G06T2201/0062 ,  G06T2201/0064 ,  H04L2209/127 ,  H04L2209/603 ,  H04L2209/608

Abstract: One aspect of the present invention discloses a device for content security. The device includes: an application execution unit configured to generate and control content in response to a content control command requested by a user; and a DRM agent configured to communicate with the application execution unit, to detect the content control command generated by the application execution unit, and to perform control on the content, and the DRM agent comprises a tracing module configured to insert security information into the content in order to prevent and trace content leakage.

公开(公告)号：US10698986B2

公开(公告)日：2020-06-30

申请号：US15593264

申请日：2017-05-11

Applicant: MARKANY INC.

Inventor： Jonguk Choi ,  Donghwa Kim ,  Jiseop Moon

IPC: G06F21/16 ,  G06F21/10 ,  H04L29/06 ,  G06T1/00 ,  H04L9/08 ,  G06F21/60

Abstract: One aspect of the present invention discloses a watermark insertion method. The method includes: segmenting target text into pieces of page content; obtaining a watermark variable comprising a line alternation value indicative of a watermark mode changed for each line of the segmented page content and a watermark mode setting value; and applying a flip-flop component insertion algorithm for inserting a watermark into each of the pieces of segmented page content based on the obtained watermark variable.

公开(公告)号：US10521566B2

公开(公告)日：2019-12-31

申请号：US15593249

申请日：2017-05-11

Applicant: MARKANY INC.

Inventor： Jonguk Choi ,  Yongjin Lee

IPC: G06F21/10 ,  H04L29/06 ,  G06T1/00 ,  H04L9/08 ,  G06F21/16 ,  G06F21/60

Abstract: One aspect of the present invention discloses a client device for content security. The device includes: an application execution unit configured to control content in response to a content control command requested in a user level; a DRM agent configured to communicate with a DRM server and the application execution unit in the user level, to detect the content control command, to receive an encryption/decryption key and security policy for content from the DRM server, to provide the received encryption/decryption key and security policy to a client kernel module, and to transmit an encryption/decryption request; and the client kernel module configured to receive the encryption/decryption key and the security policy, to store the encryption/decryption key and security policy in a secure box of a kernel level, and to perform encryption or decryption on the content based on the encryption/decryption key and security policy in response to the encryption/decryption request.