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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What are some ways of protecting a VM image?

I am looking to distribute a linux VM image (with a modified linux kernel to suit or product's needs) that runs some proprietary software that will already be on the VM I distribute. The goals is to ...
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498 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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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 ...
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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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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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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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86 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 ...
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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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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 ...