[InDMF 2013] Prof. John Choi - Evolution of Copyright Protection Technology

Digital Security, Authentication & Copyright Protection

Nov 25 2013

Evolution of Copyright Protection Technology

John CHOI (Professor, STEI)


From DRM to Watermarking1

Watermarking for Copyright Protection2

Other Applications of Watermarking3

Agenda

2


Encryption and Access Control

Payment

Save

Print

Screen Capture

Use(Play, Viewing,

etc.)

Copy

User A

Server

Networks

User C

User B

I. DRM: prevention technology

DRM: based on encryption and access control


Access Control based on POSITION, Department, Job assigned.

I. DRM: prevention technology

Enterprise DRM: extend Content DRM to Enterprise


5

I. watermark: tracing technology

1) Image Watermarking


6

Click the [Open Image]

File Dialog pops up for file selection

MAIM supports various file format: BMP, JPG, PNG, GIF, TIFF

MAIM special version supports satel-lite image, JBIG, G4FAX format

Select the file Click [Open]

Select Key Embedding and change In-tensity. If you select hi-level, Water-mark is very strong but some noise added Type Watermark Key

Click [Run] for embedding

Markany00009440.jpg + ****************

Click [Save] for saving the watermarked Image

If you click the image pane, original size image ap-pears

Original Image Watermarked Image



Robustness

1 Filtering (LPF, HPF, Median, Mean, etc)

O

2 Cropping O

3 Translation O

4 Added noise O

5 Compression Attacks : JPEG, JPEG2000

O

6 Rotation : -90o ~ 90o (Support 360o )

O

7 Scaling : 50 % ~ 200 % O

8 Format Convert : JPEG, TIFF, BMP, etc

O


Data amount embedded

Watermark Minimum Segment (WMS) 256 x 256 pixel

Data capacity 48 bits(Extendable)

Detection probability per WMS(1) > 90%

False positive probability per WMS < 10-5 (Extendable)

Error-free payload probability per WMS > 1 - 10-5

speed

Processing time Environments

Embedding 40 msec Intel® CPU i5-2430M 2.40GHz, 4 GB RAM

Windows 7 SP1, 1024 x 1024 resolutionExtracting 350 msec

water-mark

embedder

Secret key

Watermark info < image> < watermarked image >

Original Image (512x512 pixels, Color)


8



9

Select [Key Mark] radio button Click [Orig-inal Audio]

Select the original audio file Click [Open]

Click the play button to listen

Type the watermark key

Markany1

Embedding File : TEST3.WAV

Click the [Run] for watermark embedding

Click the play button to listen to the water-marked audio file

Click the [Save] for saving the watermarked file

Type filename Click [Save]



2. 오디오워터마킹 스펙 – MAO™ v3.5

robustness


Amount embedded

speed

Original Audio Watermarked Audio


3) Video Watermarking -MAVI™ v3.5

robustness


삽입정보량

처리속도

water-mark

embedder

Secret key

Watermark info < image>

< watermarked image >





Agenda

12


Archive DB

Archive Storage

UCI generation/registration

Content Stor-age

Transcoder/Encoder

TransferManager

UCIWM Embedding

UCIMeta Data Transfer

UCI basedMobile Service

UCI basedIntegrated Distri-bution MGT Web

service

Distribution DB

Content Conversion

Content Transfer

UCI

UCI based distribution Info

Digital Content Distribution(Contents Gateway)

UCI

1

2

WM Embedding Sys.

UCI based content Integrated Distribution Service System

1) Copyright Protection – MBC, EBS, KERIS, Kwangwon Province, etc

II. Watermarking for Copyright Pro-tection


Illegally distributed at 160 web hard sites

Business Loss 18 million USD + social cost

It took 2 months from first report (2009.7.17) to capture (2009.9.17)

1) Pre-release



• police report: “movie of ‘Chun Woo Chi’ is illegally distributed in web hard site (2010.3.16)

• Universal Music (UMI), SONY/

BMG, Warner Brothers, EMI in Hollywood (Audio WM)

• A Studio in Hollywood in testing Video WM

Leakage site was identified in 2 hours after report

1) Embed user info and distribute to pre-release organization



Illegal copy and distribution from user device (STB) : Analog Hall

2. IPTV/CATV - KT OllehTV, SKB Btv

Analog Hole

TV

User Net-workContent Delivery

Capture Device: Compo-nent, Composite, S-VHS

Illegal User – NTSC Signal Capturing

TV Encoder: VGA, S-VHS

CC

Illegal User – Analog Signal Captur-

ing

SD quality

CC

SD 급 품질( 고품질 )

CC

Camcording SD quality

Illegal D

istributio

n C

hannel

CAS/DRM

In content service process, exists

illegal distribution chance: security

hall

It is possible to obtain High Quality

Content through Analog Hole

External Out-put

On-line Service Plat-form (IPTV / VoD)



When service provider sends contents, automatically embeds user info into the contents

2. IPTV/CATV– KT OllehTV, SKB Btv

Illegal Distribution from “A”

Illegal Copy FoundUser “A” compromised

Front-EndService System

IP Network

Back-EndSystem

Owner

< User “B” or STB “B” Domain >

< User “A” or STB “A” Domain >

< User “C” or PC “C” Domain >

B

C

ALegalCopy

LegalCopy

LegalCopy

A< Illegal User >

WatermarkDetector

CA/ DRMDe-Packager

Fingerprinting Control Unit

Splitter

VideoDecoder

AudioDecoder

VideoWatermarking

AudioWatermarking

CA/ DRMDe-Packager


Splitter

VideoDecoder

AudioDecoder

VideoWatermarking

AudioWatermarking

CA/ DRMDe-Packager


Splitter

VideoDecoder

AudioDecoder

VideoWatermarking

AudioWatermarking

UniCast

MultiCast

DownloadService



3.Digital Cinema Tracing – Forensic watermarking

SMS

Storage

TMS

Auditorium 1

Auditorium 2

DCP

ETM ETM

ETM

Media

SMS

ETM

Th

eate

r Netw

ork

ETM + ITM (Security Network)

ETM + ITM (Security Network)

Image Media Block Projection System

Integrated Projection System

MediaDecryption

LinkEncryption

Security Manager (B)

SPB 1

ForensicMarking

MediaDecoding

PlainText

Project

MediaDecryption

ForensicMarking

MediaDecoding

Security Manager (A)

SPB 1

SPB 2


Digital Security, Authentication & Copyright Protection4. OTT Service Tracing– Irdeto(ND), MSI(USA), Korea Movie Promotion

Service system User terminal (device) Illegal distribution channel

Content Management System

User & Device Management System

Content Delivery System

Digital Rights Management System

Pla

tform

based

FM

syste

ms

PC /User Player

Device /exclusive Player

Devic

e b

ased

FM

syste

m

Web ahrd

P2PPortal site

FM Tracker

VOD/ 스트리밍서비스

불법 유출

monitoring

Refer tracking info

1. Device based FM 2. Service based FM

Leg

acy S

yste

m

Two ways of embedding: (1)real-time embedding at service platform (2) em-bed user info at user terminal when downloaded



Recent trends: many more technologies are applied

(1) Fingerprinting: Automatic Content Recognition technologyRecognize using pattern matching (extraction of pre-

specified signal patterns and search Database)Accuracy lower, Gracenote leads the market

(2) SINBAD:Search the internet for non-authorized books and dis-

plays developed by Flemish book publishersWebcrawler

II. Diversified Copyright Protection Technologies





Agenda

21


Desk-top-computer

Lap-top-computer

Smart phones

Micro Devices

PreventionTechnology

Tracing Technology

timeEvolution of Internal Security Technology

III. Watermarking for Cyber Secu-rity


Multi screen: desktop, tablet, smart phone, smart TV, auto-mobile, refrigerator, etc..

Smartphone becomes a security headache New devices: Google “Glass” computer, iWatch Micro Devices: Ball Pen camcoder, USB camcode

N-Screen Mobile Office Micro Devices



Wholesale - Discreet OL Glasses Digital Video Recorder with 8G Memory Built-in, Digital Voice Recorder, Hidden C



Recorded file

checking

extractor

extracting tracing info(when, where, etc.)

Tracing info generator

meetingRecording

Tracing info signal (when, where, etc.)

Meeting voice

Leaked out

< security area – confidential meeting >

Tracing : audio watermarking technology



Alarm!!



Semi-fragile watermark – Picaso Info, EwahTron, Multivia etc.

Court

Tampered Material

OriginalMaterial

MaliciousTamper

Camera DVRDVR

Storage-Compression-Realtime Watermarking

-Watermark Detector-Tamper Proofing/Detect Frouds

Surveillance System

: Normal: I llegal

Detector

Fragile & Robust Watermarking: Info. For Integrity Test, Location Info,

Time Info.

Integrity Verification:

Fragile Watermarking: broken when modified, but robust to conversion.Applied to DVR (Surveillance System) to collect digital evidence

IV. Prevention of Illegal Modifica-tion


Semi-Fragile Watermarking

Generate signature from original contents and then verify illegal modification for fame-unit, slice unit, block unit.

원영상 위변조된 영상 위변조 검출 Watermark embedded photo

Modified photo Identify modi-fied parts


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