# tomer8007/widevine-l3-decryptor

A Chrome extension that demonstrates bypassing Widevine L3 DRM

Repository: https://github.com/tomer8007/widevine-l3-decryptor
Canonical: https://ross.abutalabs.com/products/widevine-l3-decryptor
Language: JavaScript
License: MIT
License Family: permissive
Archived: true
Last push: 2022-12-29T12:33:18+00:00

## Health v2 (maintenance only)
Score: 10/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 0, release rhythm 35, longevity 100
- inputs: {"age_days": 2146, "days_push": 1343, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases, archived
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1246, forks 293 (observed 2026-08-28T04:04:07.129558+00:00)

## What it is
A Chrome extension that demonstrated bypassing Widevine L3 DRM by hijacking Encrypted Media Extensions calls to extract content decryption keys in plaintext. It has been non-functional since May 2021 after Google patched the CDM and issued a DMCA takedown, and now serves mainly as a reversing writeup and archive.

## Use cases
- study how Widevine L3 DRM was bypassed in Chrome
- learn reverse engineering of the Widevine Content Decryption Module
- understand Encrypted Media Extensions key flow
- research DRM security-by-obscurity weaknesses
- decrypt CENC media streams with extracted keys using ffmpeg

## When to choose
- you want to study the archived writeup on reversing the Widevine CDM
- you research DRM protection schemes and obfuscation limitations

## When to avoid
- you need a working DRM bypass today - it stopped working in May 2021
- you want a tool for decrypting protected streaming content
- you need something legally safe to redistribute - Google DMCA'd its forks

## Facets
- artifact type: plugin
- maturity: abandoned
- function: reverse-engineering, cryptography, security, browser-extension
- domain: security, reverse-engineering, browser-extensions, privacy
- platform: browser, windows
- tags: drm, widevine, eme, content-decryption, proof-of-concept, dmca, deprecated

## Member repositories
- tomer8007/widevine-l3-decryptor (main) score 10

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:04:07.129558+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T05:08:06.171803+00:00, confidence not recorded.
  - readme: https://github.com/tomer8007/widevine-l3-decryptor (fetched 2026-08-28T04:04:07.129558+00:00, sha 58a268990b46)
- Data as of 2026-08-30T08:39:29.467469+00:00.