Ready to use CDMs available here!

[LittleSoldier]

Install Pywidevine (https://pypi.org/project/pywidevine/)

You can then use this (or a similar script) to read the information:

import sys

from pywidevine import Device

if len(sys.argv) < 2:
    print(f'usage: {sys.argv[0]} <private-key-file> <client-id-blob> or {sys.argv[0]} <file.wvd>')
    sys.exit(1)

if len(sys.argv) >= 3:

    with open(sys.argv[1], 'rb') as f:
        private_key = f.read()
    with open(sys.argv[2], 'rb') as f:
        client_id = f.read()

    device = Device(
        private_key=private_key,
        client_id=client_id,
        type_=Device.Types['ANDROID'],
        security_level=3,
        flags=None)

else:
    device = Device.load(sys.argv[1])

print(device)

Thanks... It works like a charm

[Tom Saurus]

Thank you I am going to save a bunch of these except for the one that a poster said no longer works. I am learning to set up Virtual Enviroments and such trying to get things correct from the get go and isolated.

[Matt27]

These are 28 individual L3 CDMs (Android Studio, Android 11 iirc):
https://files.videohelp.com/u/303646/1836941661.zip
https://files.videohelp.com/u/303646/1874076282.zip
https://files.videohelp.com/u/303646/1901532735.zip
https://files.videohelp.com/u/303646/2085943500.zip
https://files.videohelp.com/u/303646/2090896636.zip
https://files.videohelp.com/u/303646/2103024377.zip
https://files.videohelp.com/u/303646/2135508799.zip
https://files.videohelp.com/u/303646/2163841363.zip
https://files.videohelp.com/u/303646/2165463467.zip
https://files.videohelp.com/u/303646/2205156279.zip
https://files.videohelp.com/u/303646/2225908683.zip
https://files.videohelp.com/u/303646/2257664396.zip
https://files.videohelp.com/u/303646/2314085259.zip
https://files.videohelp.com/u/303646/2343152275.zip
https://files.videohelp.com/u/303646/2361419202.zip
https://files.videohelp.com/u/303646/2371137915.zip
https://files.videohelp.com/u/303646/2373129295.zip
https://files.videohelp.com/u/303646/2388267602.zip
https://files.videohelp.com/u/303646/2389746031.zip
https://files.videohelp.com/u/303646/2408472391.zip
https://files.videohelp.com/u/303646/2428458567.zip
https://files.videohelp.com/u/303646/2441727647.zip
https://files.videohelp.com/u/303646/2448192963.zip
https://files.videohelp.com/u/303646/2448787606.zip
https://files.videohelp.com/u/303646/2453587260.zip
https://files.videohelp.com/u/303646/2464283359.zip
https://files.videohelp.com/u/303646/2515545258.zip
https://files.videohelp.com/u/303646/2760340741.zip

You're welcome

Thank you very much, i got one today and it works.

[Flippi]

Install Pywidevine (https://pypi.org/project/pywidevine/)

You can then use this (or a similar script) to read the information:

import sys

from pywidevine import Device

if len(sys.argv) < 2:
    print(f'usage: {sys.argv[0]} <private-key-file> <client-id-blob> or {sys.argv[0]} <file.wvd>')
    sys.exit(1)

if len(sys.argv) >= 3:

    with open(sys.argv[1], 'rb') as f:
        private_key = f.read()
    with open(sys.argv[2], 'rb') as f:
        client_id = f.read()

    device = Device(
        private_key=private_key,
        client_id=client_id,
        type_=Device.Types['ANDROID'],
        security_level=3,
        flags=None)

else:
    device = Device.load(sys.argv[1])

print(device)

I dumped my keys from a Samsung Galaxy S4 after upgrading the original stock firmware Android 5.0.1 to custom firmware LineageOS 14.1 - Android 7.1 and that's what I found (but decryption works):

client_info {
  name: "widevine_cdm_version"
  value: "v4.0.0-android"
}

[NJ59]

Thanks Karoolus, much appreciated.