# 2. Send to license server response = requests.post(license_url, data=request, headers="Content-Type": "application/octet-stream")
# 4. Decrypt the content key using device private key content_key = rsa_decrypt(license.encrypted_key, device_private_key) getwvkeys
| Attack | Widevine Response | |--------|------------------| | CDM extraction from Chrome L3 | Google updates CDM binaries regularly, adds obfuscation, and blacklists leaked CDMs via remote attestation. | | Emulating CDM with extracted keys | License servers check device certificate validity; revoked keys stop working. | | Using old Android L3 CDMs | OEMs push updates; Google can remotely disable compromised keys. | | Man-in-the-middle license requests | License responses are encrypted with session-specific keys. | getwvkeys
# 3. Parse the license response license = parse_license_response(response.content) getwvkeys