this post was submitted on 21 Jul 2023
30 points (94.1% liked)

Piracy: ꜱᴀɪʟ ᴛʜᴇ ʜɪɢʜ ꜱᴇᴀꜱ

54565 readers
477 users here now

⚓ Dedicated to the discussion of digital piracy, including ethical problems and legal advancements.

Rules • Full Version

1. Posts must be related to the discussion of digital piracy

2. Don't request invites, trade, sell, or self-promote

3. Don't request or link to specific pirated titles, including DMs

4. Don't submit low-quality posts, be entitled, or harass others



Loot, Pillage, & Plunder

📜 c/Piracy Wiki (Community Edition):


💰 Please help cover server costs.

Ko-Fi Liberapay
Ko-fi Liberapay

founded 1 year ago
MODERATORS
 

I know next to nothing about widevine decryption so forgive my ignorance - I was wondering if I download protected files now and get a widevine key later from another device, would I be able to decrypt the file with that key? or must the decryption be done with the same key/device that was used to download the file?

top 9 comments
sorted by: hot top controversial new old
[–] sboulema 11 points 1 year ago (2 children)

That would work. For example I download on my laptop but decrypt using a key/cdm from my tablet.

[–] [email protected] 5 points 1 year ago (1 children)

Awesome - So is there anything I need to make note of when downloading or can I just download everything and figure out what I need for decryption later?

[–] sboulema 7 points 1 year ago

I download audio and video to seperate files, decrypt the files and then remux together...

[–] [email protected] 2 points 1 year ago (1 children)

What is the reason everyone is using cdm extracted from an android device, when a webbrowser also has a cdm?

[–] sboulema 2 points 1 year ago (1 children)

During cdm dumping the functions within are hooked, so while decrypting video, the private key can be extracted.

On Android this is easiest because automatic scripts exist and you can rather easily get root access.

[–] [email protected] 1 points 1 year ago (1 children)

Does this work with the latest widevine decryption? 3 I think?

[–] sboulema 1 points 1 year ago (1 children)

Method should still work for L3 decryption. L1 decryption is hardware based instead of software based and afaik not possible to crack yet.

[–] [email protected] 1 points 1 year ago (1 children)

Ah, I had the numbers backwards. Is L1 heavily in-use?

[–] sboulema 1 points 1 year ago

Yes. Depends on the platform. For example with Netflix L1 is required for full HD, L3 will only give you access to SD content.