DRM (digital rights management) is the enforcement of restrictions on access control to data through technical means, such as copy protection.

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4answers
8k views

Are there DRM techniques to effectively prevent pirating?

A question on Skeptics.SE asks whether current DRM techniques effectively prevent pirating: Is DRM effective? The question for IT Security is: Can DRM be made effective, and are there any examples? ...
40
votes
28answers
13k views

Discouraging users from copying images off a website?

Let me begin by stating that I'm aware it's extremely tedious or virtually impossible to prevent individuals from pirating content. I'm working on a website for a client who is a relatively well ...
24
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11answers
18k views

Prevent my site from being copied

Is it possible to protect my site from HTTrack Website Copier or any similar program? Without setting a max number of HTTP request from users.
23
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5answers
3k views

ZX Spectrum tape loader: how was copy prevention implemented?

I am curious how copy prevention was implemented for games or other programs loaded from cassette on the micro computers of the early 1980s, such as the ZX Spectrum 48k. If I recall correctly, some ...
21
votes
3answers
4k views

How does DRM stop copying?

I've been doing some research into some DRM solutions, specifically "self-protecting containers". One example of this is DigiBox. Normally, the protected data is encrypted in some kind of container. ...
16
votes
6answers
10k views

How do I prevent copying of my PDF files?

One time while I was printing my documents at a copy center, I saw they dragged-and-dropped my PDFs from my flash drive to their desktop. How do I protect my files without using password? Is there a ...
9
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1answer
328 views

Security Risks of BD+

I have recently been reading about the DRM measures on commercial bluray disks, in particular BD+. It seems that this technology involves Java software running in a virtual machine, with full access ...
8
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4answers
463 views

Atypical DRM situation: distribute pictures to select partners, then prevent them from reusing them

We want to distribute digital content (think pictures) to a select number of partners (around 1000, worldwide) to use as visual reference. We would like however to prevent them from copying or in any ...
8
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3answers
676 views

A safe license System

So I'm trying to think of a good way to check if the license key a user supplies for a program is legit or not. Let's suppose this is the way they get there license They make some type of purchase. ...
8
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2answers
362 views

Practical DRM for pdfs

An organization I am consulting for is trying to find a DRM solution for an ebook that they publish internally. It is in pdf format. Does anybody have experience with DRM for pdfs, and if so, any ...
8
votes
1answer
944 views

What role does cryptography play in anti-piracy?

As a follow-up to Cipher for Product Registration, are there secure yet usable cryptographic standards/protocols for protecting software and data used by software? I'm interested in hardware and ...
7
votes
4answers
731 views

How far can we go in preventing videos from spreading out using P2P networks like BitTorrent?

Everyday, I see many of my friends downloading movies off P2P networks like BitTorrent. Isn't there any way for those hardworking movie producers to save their work from being distributed like this? ...
7
votes
4answers
17k views

How do software keygens work?

I have seen them plenty of times, with many different types of software, but the one thing I have always wondered, is how software keygens know what key to generate. I know the basic principle of it: ...
7
votes
5answers
186 views

Script / method to erase USB flash drive content after a certain number of uses

I have a few bootable thumb drives with various OS's that I intend to let someone use. However, I need a way to ensure the USB drives can only be used once. Thus my question - is there a way to have a ...
7
votes
1answer
148 views

How does HDMI splitter bypass HDCP?

I just read this article. It's about HDCP and how some old HDMI monitors would not work with your newer devices (such as game consoles, etc) because newer devices protect video stream content in a way ...
5
votes
15answers
5k views

Preventing registered users from sharing passwords [closed]

Below is a proposal for dealing with a situation of website security. I am wondering whether it seems feasible, from both a technical and usability point of view. I want to make sure that the proposal ...
5
votes
3answers
649 views

Image steganography and tracking

We are running an online-press media-library. On this site many brands are uploading images and track press users download and views per image. But some brand now want to add unique code in image so ...
5
votes
1answer
248 views

Use token for Windows Server 2008 AD RMS [closed]

I have a Windows Server 2008 configured for AD RMS (Active Directory Rights Management Service), another Windows Server 2008 machine that is the domain controller, and a third machine that is a member ...
4
votes
1answer
2k views

How does time-limited trial software work? [closed]

I'm curious about how time-limited (e.g. 30-day trial) software works. I know how serial keys are generated and designed, but the time-limiting part is more complicated to understand, because it is ...
4
votes
1answer
140 views

Protecting a document that you sell

I have written a short guidebook that I have been selling hardcopy. There is now interest in a digital version. How do I protect this guidebook so only the people who purchase it have access to it? I ...
4
votes
1answer
66 views

How secure will EME be?

EME is a technology to allow proprietary code to be run in browser to frustrate piracy. What are the security implications of this? Will it have full access to my computer (like the good-ol' ActiveX ...
4
votes
1answer
462 views

Storing License Keys

I'm creating an application which generates licenses key and stores this in a database (the licenses are checked online). I don't wish to store these license unhashed, in case the database is stolen. ...
4
votes
1answer
123 views

How do iTunes movie rentals work?

I've been wondering how iTunes movie rentals work from a security standpoint. Given that the "rented" files are actually downloaded to the user's computer and then played from there, it seems like ...
4
votes
0answers
65 views

Putting hidden DRM into PNG images to track copyright infringement [duplicate]

There was a question like this, but it was about JPG pictures. I have the same one about PNG pictures. I've recently had trouble where someone stole an artwork of mine and put it as a YouTube avatar. ...
3
votes
1answer
235 views

Can I add 'user-identifying noise' to MP3 files to determine which user shared my file, if I find it later on the internet?

Problem I'm streaming MP3 files to users. Users are not allowed to share these files. I know that it's in the end impossible to not let anyone download the files. That's not the problem, people can ...
3
votes
5answers
271 views

Is DRM considered Confidentiality, Integrity, Availability, or some combination of the three?

I was discussing software trial time limit enforcement with a colleague and the idea of CIA came up. Do stricter enforcement techniques increase confidentiality at the expense of availability? (for ...
3
votes
1answer
174 views

How is this web resource hidden from the user? [closed]

Motivation: I've been interested in how various agencies hide data, either through incompetence or willful intent, that is required to be "open". Specifically I've seen oil companies use images to ...
2
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1answer
1k views

Preventing License protection circumvention in Java software

A software (written in Java) by a vendor uses DSA signature to verify that the license information is correct. It achieves this by embedding the public key in the same Java software. Legit license ...
2
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2answers
68 views

Why is it so easy to pirate apps for Android, considering most have an internet connection and access to phone details? [duplicate]

It seems so easy to pirate apps for Android it's as if no one even cares. It's as easy as google searching for the apk and then installing it. Isn't this surprising as some apps cost money? Wouldn't ...
2
votes
1answer
467 views

What is the security/copy protection model for streaming media services?

I realize this is a broad question, but maybe there is a simple answer From my understanding, Streaming media services such as Amazon instant video, Netflix, and others do all decryption client side. ...
2
votes
1answer
47 views

Partial Man on the End Security

The Situation: I'm developing a script that runs in a popular sandbox game as a paid service for other developers. The problem is that the game does not implement a way to do so. The language is Lua ...
2
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0answers
41 views

Snapchat clone: How do I secure pre-downloaded notifications so that they cannot be opened outside of the app? [duplicate]

Say I'm making a snapchat clone app for Android and iOS. Let's say that I get a snapchat from Baz. I want to pre-download the audio for this snapchat. However, as the developer, I want to secure this ...
1
vote
2answers
88 views

How does a PHP application get nulled and how to avoid it

As so many others, I've been a victim of having a PHP product of mine be nulled and put available on the internet to download freely. The purpose of this question is to try to make it more difficult ...
1
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1answer
33 views

What protects HDCP keys in software?

I (somewhat) recently stumbled across HDCP (high-bandwidth digital content protection), a protocol that encrypts movies and other media "on the wire". Now there are of course tools to play blu-rays ...
1
vote
1answer
70 views

Hide data from user, but process it in application

Is there a way to hide the data that's received somehow from the user? In particular, I have some data that gets send from a webserver to an application. I want the application to process the data, ...
1
vote
1answer
130 views

How did this site prevent me from creating multiple accounts?

Disclaimer: I just realized this question may read a little bit as if I'm trying to promote this site. I'm not. Now that I think about it, I'm unsure whether this site even has a proper license from ...
1
vote
1answer
70 views

Cryptography behind RedHat subscription system (DRM)?

I have to do a project like a subscription manager. Ideally this should work like RedHat subscriptions. I'm having a hard time figuring out how it was implemented. How do they manage to avoid a ...
1
vote
1answer
298 views

Enforcing software expiration on virtual machines

It is possible for virtual machine guests to bypass the software expiration timers for paid software. This example shows one way to do this on VMWare. A simpler method is for the user to "revert to ...
1
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3answers
141 views

How to prevent source code theft in web application development

I'm developing a webapplication working with PHP, SQL DB and other technologies. I'm always considering someone stealing the source code or using it to other means. How can you prevent someone from ...
1
vote
2answers
182 views

DRM Video encryption

I had some work where I needed to secure streaming. So I looked over all DRM protections that are currently available, and then I found out that I had 3 opinions, first to use very expensive DRM (...
1
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1answer
113 views

Where to offer money for cracking check [duplicate]

I made a software and I would like to distribute it as a demo that can be registered. I would like to know if there is a site where I can offer some reward for some one try to crack my software and ...
1
vote
1answer
467 views

How can I implement DVD copy protection?

I want to make a DVD movie which will be playable on a standard DVD player, but I want to make it copy restricted. I know it is practically impossible, but I just want security to protect it from ...
1
vote
2answers
216 views

Restricting source code to domain name

I'm starting a very large project soon. It must include a licensing system. The project will produced using PHP/Laravel/JavaScript and use many different libraries, a CMS, and a few databases. The ...
1
vote
0answers
87 views

How would an improved “read receipt” work as an email, Facebook post, or webpage?

I'm exploring various ways to implement cryptographic read receipts, that would be used to tell the content producer that the content was viewed. In addition to feedback reporting, a response might ...
1
vote
1answer
218 views

Serial key in pdf document

I'm writting a ebook and I'm gonna to sell it soon. I'd sell it at Google Play Store, but here in Brazil they don't accept PayPal as payment (and many brazilian don't have a credit card), so I think ...
1
vote
0answers
48 views

Does HDCP impose HD-playback restrictions for sinks?

In order to be HDCP compliant, a source can only output HDCP-encrypted digital HD content. However, is the opposite true for HDCP sinks? In order to be HDCP compliant, should a sink only accept to ...
0
votes
1answer
31 views

Share private key with expiry period

I'd like a way to encrypt my data, and temporarily share access to 'semi-trusted' parties. If I encrypt my data with my private key, is it possible to share my private key (or some derivative of it)...
0
votes
5answers
224 views

Snapchat clone: How do I secure pre-downloaded notifications so that they cannot be opened outside of the app?

Say I'm making a snapchat clone app for Android and iOS. Let's say that I get a snapchat from Baz. I want to pre-download the audio for this snapchat. However, as the developer, I want to secure this ...
0
votes
1answer
47 views

secure ways to prevent access to an application by more than one person at a time?

If an application is licensed in such a way that is set up for one user, on one computer, how can I secure it? Even if locking into one computer, how could you prevent the computer from being ...
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6answers
2k views

How to prevent illegal file transfer or copying of video files from a PC? [closed]

I have developed a windows desktop application using VB.NET. My applications main purpose is to play videos. I have some videos which has copyrights on them, that are not suppose to be distributed or ...