Questions tagged [drm]
DRM (digital rights management) is the enforcement of restrictions on access control to data through technical means, such as copy protection.
122
questions
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57 views
How to find applications which use Replay Protected Memory Block (RPMB) partition of the underlying storage device in Android Trusty? [closed]
I am trying to find a list of applications which use RPMB partition in the underlying Storage Device (eMMC/UFS/NVMe) in Android Trusty environment.
How do I go about doing this ?
Thanks
0
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2answers
160 views
How to put executable code in files? [closed]
I have PDF, Word and MP4 files on my site and I want to protect them from illegal downloading even if my site hacked. I want to put executable code in the files, so if someone downloads and opens them,...
2
votes
2answers
493 views
How to decrypt a file to memory and run it from memory?
How someone might run an encoded executable, mp3, or any other file safely in memory after being decrypted.
A use case might be someone trying to make code or a file only usable through their service ...
0
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1answer
84 views
Can a source code be shared and secured form unauthorized use at the same time?
We have developed a script that generates certain reports as output. Input data being confidential in nature, one of our clients wants the code to be hosted in their country and also for the business ...
-1
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1answer
72 views
securing certificate based authentication for linux and windows applications
I am wondering what are the possible options for the following:
Let's say you have a software-agent you want to deploy on systems running both on Windows and Linux, e.g. an agent written in C++.
Let's ...
0
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1answer
137 views
How to prevent Source code excessive usage and redistribution?
We sell our code to a company that they can run our code 100 times a month. We need to do a few things before giving the code to the company.
Hide our logic (we can hide our logic by code obfuscation)...
2
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0answers
163 views
DRM implementation for offline licensing
I am improving one of the DRMs that I'm using for my software, and I have a few questions about how to best implement transferable licenses for offline computers. But first, a disclaimer - I am very ...
0
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1answer
2k views
How a website knows if a video has been watched or downloaded?
There's a video lecture streaming on a university platform that runs javascript. Can the system detect if I'm downloading the video (via IDM) rather than just watching it? In other words, how can a ...
1
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1answer
82 views
What are the roles of the "PACKAGER" in a digital rights management system?
I am studying about the basics of DRM systems. I recently discovered that the term packager is the application that encrypts the original content from the creator. Is there any other work this ...
1
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2answers
98 views
python time since epoch hacking system variable
I am trying to figure out whether it's safe to let a payed software check its own license date validity using the client's computer
the way this is done is by invoking time.time() function from ...
0
votes
1answer
93 views
Is using SecureString in combination with Xor considered secure enough for standalone Windows app?
The environment is Windows. We are using 3rd party tools in our app, and for tools to work they require method call and pass a license key that is a string.
License.Import(string name, string email, ...
0
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0answers
82 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.
...
19
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3answers
3k 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 ...
38
votes
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' ...
0
votes
1answer
329 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 ...
0
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3answers
2k 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 ...
20
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5answers
4k views
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 ...
7
votes
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 ...
0
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1answer
150 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 ...
0
votes
2answers
330 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 ...
1
vote
2answers
222 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 ...
0
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3answers
175 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 ...
14
votes
1answer
627 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 ...
2
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3answers
850 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 ...
2
votes
3answers
1k 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 ...
1
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3answers
336 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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3answers
302 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 ...
2
votes
0answers
68 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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votes
2answers
147 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 ...
0
votes
2answers
113 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 ...
3
votes
0answers
2k 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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0answers
157 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 ...
18
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1answer
5k 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 ...
2
votes
1answer
386 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 ...
-1
votes
1answer
275 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 ...
3
votes
2answers
601 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 ...
5
votes
1answer
2k 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 ...
1
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0answers
33 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
votes
1answer
273 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 ...
1
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0answers
731 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 ...
0
votes
1answer
594 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.
1
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1answer
156 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 ...
0
votes
2answers
179 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 ...
0
votes
1answer
142 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 ...
1
vote
2answers
103 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 ...
34
votes
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 ...
0
votes
1answer
97 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 ...
0
votes
3answers
516 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 ...
-1
votes
2answers
351 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
votes
2answers
284 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,...
