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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48 views

How to restrict software distribution or make sure it should not be copied [duplicate]

I Want to release software and it is going to be hosted on the client system. How to make sure that it should not be copied or how to restrict unpaid users using the software. I have 2 questions. ...
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392 views

How does Widevine, FairPlay, and other DRM's work under the hood?

I am trying to understand how DRM works under the hood. There doesn't seem to be much information about it on the web so I figured I would ask here. After some attempted research, I found it ...
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6answers
9k views

Schemes/ Mechanisms that could provide one time decryption?

I am quite familiar with most of the common undergrad/grad security foundations; but I couldn't find anything related to this scenario: A scheme/system where a piece of data can only be 'decrypted' ...
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94 views

Server encryption, client decryption, without the client having the ability to encrypt?

Is it possible to encrypt data server side and then decrypt it client side; without the client having the ability to encrypt the data themselves after decrypting? I'm working on a license manager ...
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3answers
296 views

Should I trust signed GOG games, which are not original?

First I don't want to promote any kind of pirated software here, just don't know where and how to ask this question. I find out crackers share games released on GOG (which are DRM free), it's ...
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How to use FDE without needing to share the encryption password

We have an AI model which needs to be deployed on premise. The hardware will be provided by us, so we can do what ever we want on the device. The device is a mini PC running Ubuntu 18.04. The UI is ...
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3answers
1k views

Encrypt folder on Linux that can only be decrypted on that specific OS and device

Suppose I want to give a computer to someone that runs an application. I want to avoid that the program can be copied to another computer or be tampered with. For that, I want to encrypt the folder ...
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DRM using TPM on Computers deployed offline (OS Windows 10 with TPM 2.0) [duplicate]

I've been asked to do a sort of copy protection (licensing) to an existing software project, using TPM 2.0 on Windows. What is asked for is that a specific software is only allowed to run on the ...
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1answer
66 views

Securing Delphi application SSL traffic from decryption

I wrote a VCL app using Delphi10.2. It has a simple activation setup, encrypted key is stored in Kinvey backend. The key to decrypt the encrypted key is hidden in the source code. Now in order to ...
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2answers
151 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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147 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
132 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
389 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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3answers
266 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
501 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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248 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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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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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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2answers
122 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
90 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
1k 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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119 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
331 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
150 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
363 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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1answer
894 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 ...
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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 ...
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1answer
168 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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637 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
457 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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107 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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155 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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126 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
90 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 ...
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
83 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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3answers
416 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 ...
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2answers
158 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 ...
2
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2answers
256 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
685 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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756 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
281 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 ...
2
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1answer
159 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
1k 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
117 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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2answers
586 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?
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44 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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168 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
369 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 ...