59 lines
1.6 KiB
Python
59 lines
1.6 KiB
Python
import logging
|
|
import subprocess
|
|
import re
|
|
import base64
|
|
|
|
from pywidevine.cdm import cdm, deviceconfig
|
|
|
|
class WvDecrypt(object):
|
|
WV_SYSTEM_ID = [237, 239, 139, 169, 121, 214, 74, 206, 163, 200, 39, 220, 213, 29, 33, 237]
|
|
def __init__(self, init_data_b64, cert_data_b64, device):
|
|
self.init_data_b64 = init_data_b64
|
|
self.cert_data_b64 = cert_data_b64
|
|
self.device = device
|
|
|
|
self.cdm = cdm.Cdm()
|
|
|
|
def check_pssh(pssh_b64):
|
|
pssh = base64.b64decode(pssh_b64)
|
|
if not pssh[12:28] == bytes(self.WV_SYSTEM_ID):
|
|
new_pssh = bytearray([0,0,0])
|
|
new_pssh.append(32+len(pssh))
|
|
new_pssh[4:] = bytearray(b'pssh')
|
|
new_pssh[8:] = [0,0,0,0]
|
|
new_pssh[13:] = self.WV_SYSTEM_ID
|
|
new_pssh[29:] = [0,0,0,0]
|
|
new_pssh[31] = len(pssh)
|
|
new_pssh[32:] = pssh
|
|
return base64.b64encode(new_pssh)
|
|
else:
|
|
return pssh_b64
|
|
|
|
self.session = self.cdm.open_session(check_pssh(self.init_data_b64), deviceconfig.DeviceConfig(deviceconfig.device_sony_lvl1))
|
|
|
|
if self.cert_data_b64:
|
|
self.cdm.set_service_certificate(self.session, self.cert_data_b64)
|
|
|
|
|
|
def log_message(self, msg):
|
|
return "{}".format(msg)
|
|
|
|
def start_process(self):
|
|
keyswvdecrypt=[]
|
|
try:
|
|
for key in self.cdm.get_keys(self.session):
|
|
if key.type == 'CONTENT':
|
|
keyswvdecrypt.append(self.log_message('{}:{}'.format(key.kid.hex(),key.key.hex())))
|
|
except Exception:
|
|
return False, keyswvdecrypt
|
|
|
|
return True, keyswvdecrypt
|
|
|
|
def get_challenge(self):
|
|
return self.cdm.get_license_request(self.session)
|
|
|
|
def update_license(self, license_b64):
|
|
self.cdm.provide_license(self.session, license_b64)
|
|
return True
|
|
|