Questions tagged [drm]

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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1answer
75 views

How to protect HMAC key embedded in code from someone who would copy entire source?

I and a friend are developing a web game. The front-end to back-end communication will be carried out by the means of an API. We realized that someone could then easily hook up to our API and make a ...
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2answers
128 views

Encrypting intellectual property on client side

Is it possible to effectively protect/encrypt intellectual property that is on the client side? Assume that I am selling a product (software) to clients, that contains intellectual data, for example ...
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3answers
117 views

How to track the usage of image

We are running an image content system where we allow the option to download the image freely by any user. Now I want to do the following things for those images: Track down the usage of the image ...
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1answer
568 views

How does video protection work when someone is recording their screen?

I forgot to turn my video recorder off and accidentally recorded my screen when I watched some series on some website. When I re-watched the video a few weeks later, I noticed that the part where the ...
10
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1answer
202 views

How do HTML5 DRM addons protect their output?

HTML5 has a DRM framework Encrypted Media Extensions (EME), that allows DRM companies to create content decryption modules (CDM) to decrypt DRM protected content. Browsers should use a sandbox to run ...
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28answers
15k 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 ...
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3answers
145 views

Returning POST JSON data securely?

I have a webpage (HTTPS encrypted and authorized only via domain credentials) that displays grid information. This grid information is received via a POST request to my server which will send back ...
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3answers
204 views

Why is it required to HMAC riv in HDCP 2.3?

In HDCP 2.3 (pdf) during the Session Key Exchange, the HDCP transmitter sends also the 256-bit HMAC of riv (HMAC-SHA256(riv, kd)). Why is it required? Does it prevent any attack?
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1answer
527 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 ...
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3answers
118 views

Per-User Image DRM for Finding a Leaker? [duplicate]

I'm managing a client that distributes their users images and files through one source. My background is heavily in development as opposed to security, and I'm of course familiar with some tricks that ...
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3answers
274 views

How to prevent unauthorized users from accessing an image on my server just by URL?

I have a few dynamically generated images on my server (of high business value), which are supposed to be viewed only via our mobile app. The image is simply loaded from the URL as PNG. How can I ...
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0answers
53 views

Protecting website from content theft [duplicate]

I have a website called http://example.com. there is another website called http://example1.com it has the same content as for my website. If I upload file on my website like http://example.com/test....
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0answers
500 views

How can Web Crypto API and IndexedDB protect data stored on the client side against user manipulation?

Imagine web apps that are supposed to work with no or only a few interactions with the web server, for example: a browser game in which the player's level and progress are to be saved locally. a game,...
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2answers
119 views

How to identify the user who revealed private mp3 to public? [duplicate]

I have a service that serves mp3 files to a small circle of people. In the case of a revelation, how could I know who had done that? What technology could I use to sign every copy of the mp3 files ...
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2answers
85 views

Is there any way to track the status of a document sent to an external entity?

I'm wondering what the capabilities for document (PDF/DOCX/XLSX/PPTX) tracking are , specifically to determine whether a client has broken a non-disclosure agreement. Here's a scenario: Service ...
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0answers
108 views

How secure is a file on a raspberry pi?

Let's say I change the password for the root & pi user to something impossible to brute force, say 20 characters. Then in one of my files on my raspberry pi, I hardcode a password. Is this ...
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1answer
4k views

How difficult is it to intercept the POST response body when SSL is used?

For an Android application that is performing POST requests (JSON) over SSL and receiving a JSON object as a response, how difficult is it to get the JSON response? Is the easiest way to decompile ...
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1answer
282 views

Are the details about the Widevine bug now public?

There was a bug in Widevine last year which enabled downloading Encrypted Media Extension Content. They stated that they would give full details after 90 days. Was this meant for public disclosure or ...
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1answer
117 views

Audio steganography and DRM

I recently made a post about an audio steganography program and had another concern I thought I might ask. I understand that most music has DRM in them. If I hide secret files in audio files with DRM ...
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2answers
283 views

DRM using embedded private key

I've started learning about cryptography used for DRM solutions, and curious to know if this is a valid solution for a custom embedded system running purchased software assets. ECDSA public / private ...
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0answers
24 views

Can files be retrieved from a VM instance state that was initially encrypted on a disk?

If I were to make a VM disk that was encrypetd, boot it, enter the encrypted passphrase and save the resulting 'image state' (of the running VM). Would this image have the 'encrypted' files easily ...
3
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1answer
110 views

How protected are files within a running encrypted VM on a possibly non secure hypervisor / host?

I've got a set of source code files (compiled C#) that I want to prevent direct read access to. The program will be running on the VM. I was thinking of storing these in an encrypted hard disk VM, the ...
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0answers
560 views

Can we screen record Netflix strems? [duplicate]

No I don't want to do it and I don't have a Netflix account but I have heard the different ways Netflix uses DRM to protect its content such as encrypted streaming and watermark. But someone can just ...
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1answer
4k 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 ...
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2answers
2k views

How do OTT providers protect LIVE streams?

For Video on Demand, DRM seems the way to go. I've been told that providers might be using a token-based system, but I haven't found any provider so far that uses token, just DRM (except Akamai, ...
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1answer
340 views

What is the mechanism to protect photos uploaded on social media? [closed]

I know water mark the photograph is one method to protect ones copyright over the picture. is there any other technique through which one can prevent or detect the plagiarism of photos.
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1answer
94 views

Digital watermarking for detecting Copyright infringement - video file of customer A and B have same SHA Checksums?

Sometimes I buy in a online shop video files (mp4). The online shop forces it's customers to buy with verified real name. In case of leaking his content the shop can identity who leaked it. I don't ...
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2answers
134 views

Is Amazon Prime DRM able to scan a LAN for devices and services? [closed]

My company has signed up for Amazon Prime to watch some videos. They were asked to enable Amazon Prime DRM. Will this open up a security hole in our LAN? I am worried that they could start scanning ...
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1answer
124 views

Best way to secure documents? [closed]

I'm currently tasked with securing our documents stored in our NAS. Basically, the minimum requirements that is needed are; 1) Watermarking Ability(Any file viewed/downloaded or printed will have the ...
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2answers
89 views

How to provide to your Webpage a security like Wix and how to break that security

I have read several articles related to the "impossibility to fully protect your Website from being copied (please, check, for instance: Prevent my site from being copied). So, how is it possible for ...
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3answers
355 views

Securing a video using encryption

Videos uploaded on Youtube or any other video streaming website can be easily downloaded by using 3rd party software. In order to prevent the viewers from sharing the video to unauthorised people. I ...
33
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5answers
7k views

Is it possible to embed information that is both nearly invisible to the naked eye and decodable from an external camera?

I am interested in watermarking a video for copyright purposes. The requirements are as follows: The watermark must be barely noticeable to the naked eye. The watermark must be able to be extracted ...
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1answer
73 views

Media content protection [closed]

I have been trying to encrypt media(Video and audio content) from a nodejs server to a client like android or iOS. I heard of DRM but could not get a reliable implementation of DRM. I wanted to make ...
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2answers
151 views

How to protect icon images that are sold online from being stolen? [duplicate]

I have been lately browsing material icons from this site. I started to notice that they don't have any free plans as such so you will have to buy the icons if you want to download them. But however ...
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2answers
245 views

DRM - Make sure that a SDK is used by the client legally

We are an IT startup which provides some clients with a Software Development Kit, which may be used by the client within a specific environment, according to some terms and legal agreement. Especially,...
2
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0answers
482 views

Does any DRM system work within a Virtual Machine? [closed]

I'm running a few quick tests to see if any DRM system works on a VM. Notably, most DRM systems (haven't found one yet), don't work on a virtual device: iPhone Simulator on OSX (FairPlay) Windows ...
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0answers
631 views

How is the Apple FairPlay Server Playback Context (SPC) message generated?

I'm researching encryption tools that use OS-verified hardware such as a TPM or Secure Element. Given that FairPlay only works on iOS and certain Mac hardware, I suspect there is some interaction ...
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1answer
215 views

Canvas: DRM for websites?

If you look at my post history, you will realize that preventing websites from being ripped has been a goal of mine lately. Recently, I came across a game developed within the browser using Canvas ...
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2answers
547 views

How does HDCP detection work?

What is the mechanism used by websites like HBO GO to detect HDCP bypassing/violation? How foolproof is this mechanism, as the logic lies on the client side?
4
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1answer
888 views

How to use TPM to identify a computer for licensing purposes?

I've been comissioned to use TPM to add a licensing system to an existing software project. The idea is to use TPM to uniquely identify the computer (that runs GNU/Linux, probably CentOS/RHEL/Fedora) ...
2
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1answer
152 views

A file that doesn't allow copy/paste or print

We know that Adobe pdf's convenient control features for discouraging copy/paste and print are not real security measures. We are searching for a way to create a file that has default security set ...
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4answers
806 views

Received letter from attorney stating they found a pirated copy of software on my computer based on my MAC address [closed]

Is this correct? Can a MAC address lead a company to the specific user? They have my phone number and an old email address for me. The information they sent me is showing a MAC address and the ...
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2answers
112 views

How to prevent bypass of user agreement window

I have a file on my website which users can download. After clicking the download button, then I show a div with user agreements and two buttons, "accept user agreement" and "decline user agreement". ...
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1answer
43 views

Tutorial Video Protection on a Tablet

I am planning to start tutorial videos. I thought of buying a tablet and then putting the videos on the tablet. My major concern is that the students shouldn't be able to copy the videos. They ...
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1answer
153 views

Effective methods of preventing people ripping HTML/CSS/JS off my site via right click “save-as”? [duplicate]

PS: My last question was marked duplicated incorrectly. For all those marking this as a duplicate of the image copying question posted earlier, I am not interested in preventing just image copying. I ...
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1answer
302 views

Why is it a security risk to use Apple's receipt validation service directly from a device?

If you watch this video at 52:05 he says, "Never, never, never, ever send the receipt directly from your app on a device to the validation service." He goes on to say, "Its way too easy for someone ...
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6answers
12k 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 ...
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1answer
4k views

What's the difference between DRM and CAS?

As I see it, both are used within the scope of content security, to restrict who has access to what. So what's the difference between a DRM system and a Conditional Access System? Is CAS a subset of ...
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1answer
1k 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. ...
4
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2answers
1k views

Best practice for securing encrypted content on Android app

I have an Android APK which loads in locally stored content files protected by AES encryption, and I want to keep the encryption key secret from all users. Only the app itself should be able to read ...