how to get decryption key from the following response (Widewine)

[doughnuts]

Hello,

How can i get decryption key from License Response

MPD:

 <?xml version="1.0" encoding="UTF-8"?>
<MPD xmlns="urn:mpeg:dash:schema:mpd:2011" profiles="urn:mpeg:dash:profile:isoff-live:2011" type="static" mediaPresentationDuration="PT52M11.361S" minBufferTime="PT2.000S">
  <BaseURL>https://vod.njpwworld.com/media/v1/dash/live/cenc/6415643985001/a1b08073-4a55-4e85-9ef5-2d7ba3907c7a/15583899-0dc9-4ac9-8d34-99e905fe4fe0/</BaseURL>
  <Period>
    <AdaptationSet mimeType="audio/mp4" startWithSAP="1" segmentAlignment="true" lang="ja">
      <ContentProtection schemeIdUri="urn:mpeg:dash:mp4protection:2011" xmlns:cenc="urn:mpeg:cenc:2013" cenc:default_KID="15583899-0dc9-4ac9-8d34-99e905fe4fe0" value="cenc"></ContentProtection>
      <ContentProtection schemeIdUri="urn:uuid:edef8ba9-79d6-4ace-a3c8-27dcd51d21ed" xmlns:cenc="urn:mpeg:cenc:2013" bc:licenseAcquisitionUrl="https://manifest.prod.boltdns.net/license/v1/cenc/widevine/6415643985001/a1b08073-4a55-4e85-9ef5-2d7ba3907c7a/15583899-0dc9-4ac9-8d34-99e905fe4fe0?fastly_token=NjY4NDcxNmFfYWI3MjA4MGE3YzRiNDZhZmRkNGQwOTQyZmZhOTdjZDEwYWM0MzY4MWI5YjQxNzRhZDQ4YWE3MTBjNmUzNjhlZA%3D%3D" xmlns:bc="urn:brightcove:2015">
        <cenc:pssh>AAAAVnBzc2gAAAAA7e+LqXnWSs6jyCfc1R0h7QAAADYIARIQFVg4mQ3JSsmNNJnpBf5P4BoNd2lkZXZpbmVfdGVzdCIIMTIzNDU2NzgyB2RlZmF1bHQ=</cenc:pssh>
      </ContentProtection>
      <ContentProtection schemeIdUri="urn:uuid:9a04f079-9840-4286-ab92-e65be0885f95" xmlns:cenc="urn:mpeg:cenc:2013" xmlns:mspr="urn:microsoft:playready">
        <mspr:pro>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</mspr:pro>
        <cenc:pssh>AAAEWnBzc2gAAAAAmgTweZhAQoarkuZb4IhflQAABDo6BAAAAQABADAEPABXAFIATQBIAEUAQQBEAEUAUgAgAHgAbQBsAG4AcwA9ACIAaAB0AHQAcAA6AC8ALwBzAGMAaABlAG0AYQBzAC4AbQBpAGMAcgBvAHMAbwBmAHQALgBjAG8AbQAvAEQAUgBNAC8AMgAwADAANwAvADAAMwAvAFAAbABhAHkAUgBlAGEAZAB5AEgAZQBhAGQAZQByACIAIAB2AGUAcgBzAGkAbwBuAD0AIgA0AC4AMAAuADAALgAwACIAPgA8AEQAQQBUAEEAPgA8AFAAUgBPAFQARQBDAFQASQBOAEYATwA+ADwASwBFAFkATABFAE4APgAxADYAPAAvAEsARQBZAEwARQBOAD4APABBAEwARwBJAEQAPgBBAEUAUwBDAFQAUgA8AC8AQQBMAEcASQBEAD4APAAvAFAAUgBPAFQARQBDAFQASQBOAEYATwA+ADwASwBJAEQAPgBtAFQAaABZAEYAYwBrAE4AeQBVAHEATgBOAEoAbgBwAEIAZgA1AFAANABBAD0APQA8AC8ASwBJAEQAPgA8AEMASABFAEMASwBTAFUATQA+AFkAZwBCAE4AcgAwAGMANABlAGcASQA9ADwALwBDAEgARQBDAEsAUwBVAE0APgA8AEwAQQBfAFUAUgBMAD4AaAB0AHQAcABzADoALwAvAG0AYQBuAGkAZgBlAHMAdAAuAHAAcgBvAGQALgBiAG8AbAB0AGQAbgBzAC4AbgBlAHQALwBsAGkAYwBlAG4AcwBlAC8AdgAxAC8AYwBlAG4AYwAvAHAAbABhAHkAcgBlAGEAZAB5AC8ANgA0ADEANQA2ADQAMwA5ADgANQAwADAAMQAvAGEAMQBiADAAOAAwADcAMwAtADQAYQA1ADUALQA0AGUAOAA1AC0AOQBlAGYANQAtADIAZAA3AGIAYQAzADkAMAA3AGMANwBhAC8AMQA1ADUAOAAzADgAOQA5AC0AMABkAGMAOQAtADQAYQBjADkALQA4AGQAMwA0AC0AOQA5AGUAOQAwADUAZgBlADQAZgBlADAAPwBmAGEAcwB0AGwAeQBfAHQAbwBrAGUAbgA9AE4AagBZADQATgBEAGMAeABOAG0ARgBmAE4AVABsAGwATQBEAEUAMABNAEQAVgBsAFoAbQBGAGkAWQBqAEUAMQBPAEcASQAxAE8ARABBAHgATQB6AFEAegBOAHoATQB5AFoAbQBVADIAWgBEAEIAagBNAFcASQAwAE8AVABVAHkAWQB6AFEAMQBaAFcAWQB3AE0AegBVADAATQB6AE4AawBNAG0ASQAxAE4AVABjAHgAWgBEAEoAawBZAHoARQB6AE0AQQAlADMARAAlADMARAA8AC8ATABBAF8AVQBSAEwAPgA8AC8ARABBAFQAQQA+ADwALwBXAFIATQBIAEUAQQBEAEUAUgA+AA==</cenc:pssh>
      </ContentProtection>
      <Role schemeIdUri="urn:mpeg:dash:role:2011" value="main"></Role>
      <SegmentTemplate duration="285696" initialization="$RepresentationID$/init.m4f?" media="$RepresentationID$/3x/segment$Number$.m4f?" startNumber="0" timescale="48000"></SegmentTemplate>
      <Representation audioSamplingRate="48000" bandwidth="64000" codecs="mp4a.40.2" id="6481eb29-dec5-4f27-874d-437bc6ae2312"></Representation>
      <Representation audioSamplingRate="48000" bandwidth="96000" codecs="mp4a.40.2" id="e5879a72-13d7-4e54-ab9a-0e707f12539f"></Representation>
      <Representation audioSamplingRate="48000" bandwidth="127000" codecs="mp4a.40.2" id="4e8cab26-c89b-4dfb-863c-4751151b1371"></Representation>
      <Representation audioSamplingRate="48000" bandwidth="167000" codecs="mp4a.40.2" id="2552d4dc-3503-4495-b361-e7cf42383257"></Representation>
    </AdaptationSet>
    <AdaptationSet mimeType="video/mp4" startWithSAP="1" scanType="progressive" segmentAlignment="true">
      <ContentProtection schemeIdUri="urn:mpeg:dash:mp4protection:2011" xmlns:cenc="urn:mpeg:cenc:2013" cenc:default_KID="15583899-0dc9-4ac9-8d34-99e905fe4fe0" value="cenc"></ContentProtection>
      <ContentProtection schemeIdUri="urn:uuid:edef8ba9-79d6-4ace-a3c8-27dcd51d21ed" xmlns:cenc="urn:mpeg:cenc:2013" bc:licenseAcquisitionUrl="https://manifest.prod.boltdns.net/license/v1/cenc/widevine/6415643985001/a1b08073-4a55-4e85-9ef5-2d7ba3907c7a/15583899-0dc9-4ac9-8d34-99e905fe4fe0?fastly_token=NjY4NDcxNmFfYWI3MjA4MGE3YzRiNDZhZmRkNGQwOTQyZmZhOTdjZDEwYWM0MzY4MWI5YjQxNzRhZDQ4YWE3MTBjNmUzNjhlZA%3D%3D" xmlns:bc="urn:brightcove:2015">
        <cenc:pssh>AAAAVnBzc2gAAAAA7e+LqXnWSs6jyCfc1R0h7QAAADYIARIQFVg4mQ3JSsmNNJnpBf5P4BoNd2lkZXZpbmVfdGVzdCIIMTIzNDU2NzgyB2RlZmF1bHQ=</cenc:pssh>
      </ContentProtection>
      <ContentProtection schemeIdUri="urn:uuid:9a04f079-9840-4286-ab92-e65be0885f95" xmlns:cenc="urn:mpeg:cenc:2013" xmlns:mspr="urn:microsoft:playready">
        <mspr:pro>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</mspr:pro>
        <cenc:pssh>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</cenc:pssh>
      </ContentProtection>
      <Role schemeIdUri="urn:mpeg:dash:role:2011" value="main"></Role>
      <SegmentTemplate duration="180180" initialization="$RepresentationID$/init.m4f?" media="$RepresentationID$/3x/segment$Number$.m4f?" startNumber="0" timescale="30000"></SegmentTemplate>
      <Representation bandwidth="249000" codecs="avc1.42001e" frameRate="2997/100" height="360" id="7fe32cb2-4901-4fc8-85d0-5e1a14105030" width="640"></Representation>
      <Representation bandwidth="582000" codecs="avc1.4d001f" frameRate="2997/100" height="576" id="85bd82c8-9046-4ab2-98eb-4379dd41542a" width="1024"></Representation>
      <Representation bandwidth="1636000" codecs="avc1.640028" frameRate="2997/100" height="900" id="3668c4d2-8956-465d-b36d-1ef76d88cb09" width="1600"></Representation>
      <Representation bandwidth="2968000" codecs="avc1.640028" frameRate="2997/100" height="1080" id="ab7bf86b-4748-494c-b14f-63438f440ae2" width="1920"></Representation>
    </AdaptationSet>
    <AdaptationSet mimeType="text/vtt" lang="en" label="字幕 / caption">
      <Representation bandwidth="256" id="8ef4509d-3447-4475-97f7-0a602b7521c2">
        <BaseURL>https://vod.njpwworld.com/media/v1/dash/live/clear/6415643985001/a1b08073-4a55-4e85-9ef5-2d7ba3907c7a/8ef4509d-3447-4475-97f7-0a602b7521c2.vtt</BaseURL>
      </Representation>
    </AdaptationSet>
  </Period>
</MPD>

KID:

155838990dc94ac98d3499e905fe4fe0

License Response:

  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

Original video link: https://watch.njpwworld.com/player/43782/series?assetType=series

[Obo]

Standard widevine license request as described in length in the stickies. You really should read them if you are interested in how to get the keys:

155838990dc94ac98d3499e905fe4fe0:f6c272cd145a75d05321b206ce18bc98

[aqzs]

I have made this script :

import requests
from pprint import pprint
import xml.etree.ElementTree as ET
from pywidevine.cdm import Cdm
from pywidevine.device import Device
from pywidevine.pssh import PSSH

def getpssh(url_mpd):
    psshs = []
    response = requests.get(url_mpd)
    root = ET.fromstring(response.content)
    for i in range(20):
        for j in range(20):
            for k in range(20):
                for l in range(20):
                    try:
                        if root[i][j][k][l].text not in psshs and len(root[i][j][k][l].text) > 70 and len(root[i][j][k][l].text) < 190:
                            psshs.append(root[i][j][k][l].text)
                    except:
                        pass
    for pssh in psshs:
        return pssh
    
def getkeys(pssh,lic_url):
    pssh = PSSH(pssh)
    device = Device.load(DEVICEPATH)
    cdm = Cdm.from_device(device)
    session_id = cdm.open()
    challenge = cdm.get_license_challenge(session_id, pssh)
    licence = requests.post(lic_url, data=challenge)
    licence.raise_for_status()
    cdm.parse_license(session_id, licence.content)
    keys = []
    for key in cdm.get_keys(session_id):
        if key.type=='CONTENT':
            keys.append(f"{key.kid.hex}:{key.key.hex()}")
    cdm.close(session_id)
    return keys

def getcmd(id):
    params = (('device_type', 'web'),('duid', '16affe5e-270f-44c6-bc65-367b8e518d16'))
    data = requests.post('https://beacon.playback.api.brightcove.com/tvasahi/api/account/anonymous_login', params=params).json()
    auth_token = data['auth_token']
    account_token = data['account_token']

    headers = {'authorization': f'Bearer {auth_token}'}
    params = (('device_type', 'web'),('ngsw-bypass', '1'))
    data = requests.get(f'https://beacon.playback.api.brightcove.com/tvasahi/api/account/{account_token}/asset_info/{id}', headers=headers, params=params).json()
    streamid = data['data']['video_playback_details'][-1]['stream_id']

    params = (('cohort', '98'),('device_type', 'web'),('device_layout', 'web'))
    data = requests.post(f'https://beacon.playback.api.brightcove.com/tvasahi/api/assets/{id}/streams/{streamid}', headers=headers, params=params).json()
    policy_key = data['data']['stream']['video_provider_details']['policy_key']
    account_id = data['data']['stream']['video_provider_details']['account_id']
    videoid = data['data']['stream']['url']
    name = data['data']['stream']['name']

    headers = {'accept': f'application/json;pk={policy_key}',}
    data = requests.get(f'https://edge.api.brightcove.com/playback/v1/accounts/{account_id}/videos/{videoid}', headers=headers).json()
    for source in data['sources']:
        keyssys = source.get('key_systems').get('com.widevine.alpha')
        base_mpd_url = source['src']
        if keyssys:
            mpd_url = base_mpd_url
            lic_url = keyssys['license_url']

    pssh = getpssh(mpd_url)
    keys = getkeys(pssh,lic_url)
    print(f"""N_m3u8DL-RE "{mpd_url}" --save-name "{name}" --select-video best --select-audio all --select-subtitle all -mt -M format=mkv  --log-level OFF --key """ + ' --key '.join(keys))

DEVICEPATH = "device.wvd"
videourl = input('Enter the video url: ')
# videourl = 'https://watch.njpwworld.com/player/43782/series?assetType=series'
id = videourl.split('/')[-2]
getcmd(id)

Enter the video url: https://watch.njpwworld.com/player/43782/series?assetType=series
N_m3u8DL-RE "https://manifest.prod.boltdns.net/manifest/v1/dash/live-baseurl/bccenc/6415643985001/a1b08073-4a55-4e85-9ef5-2d7ba3907c7a/6s/manifest.mpd?fastly_token=NjY4NDRlZTRfZWMxNDU5MDQxODFhOWQ1OTMxZTU4MjlmNzM0OTU2ZjlkOWU5N2IzMmY5NjYzYzA3MDVjMDhhZTc1MGViOGU2MA%3D%3D" --save-name "Press Conference (with Subtitles) | 6/16/2024 NEW JAPAN SOUL 2023" --select-video best --select-audio all --select-subtitle all -mt -M format=mkv  --log-level OFF --key 155838990dc94ac98d3499e905fe4fe0:f6c272cd145a75d05321b206ce18bc98

[doughnuts]

I have made this script :
[HTML]import requests
from pprint import pprint
import xml.etree.ElementTree as ET
from pywidevine.cdm import Cdm
from pywidevine.device import Device
from pywidevine.pssh import PSSH

def getpssh(url_mpd):
psshs = []
response = requests.get(url_mpd)
root = ET.fromstring(response.content)
for i in range(20):
for j in range(20):
for k in range(20):
for l in range(20):
try:
if root[i][j][k][l].text not in psshs and len(root[i][j][k][l].text) > 70 and len(root[i][j][k][l].text) < 190:
psshs.append(root[i][j][k][l].text)
except:....

I want to know how this decryption works. I have some leads PSSH + License Response = Decryption Key. I don't know how to extract the key from these. Please don't point me to some website that generates the key using PSSH and License server URL. I want to understand how it works. Thanks for your time.

[aqzs]

Run that script and add some print() where you don't figure out which part is the one you are looking for.

pssh = getpssh(mpd_url) -> pssh is extracted from mpd
keys = getkeys(pssh,lic_url) -> key is obtain with pssh and license url that come from this request : data = requests.get(f'https://edge.api.brightcove.com/playback/v1/accounts/{account_id}/videos/{videoid}', headers=headers).json()

[larley]

Either use the CDRM project, etc.
or use a CDM with pywidevine

[Obo]

I want to know how this decryption works. I have some leads PSSH + License Response = Decryption Key. I don't know how to extract the key from these. Please don't point me to some website that generates the key using PSSH and License server URL. I want to understand how it works. Thanks for your time.

But that's exactly how it works. Your browser/app/... generates a license request (the "challenge") with the PSSH (which contains the key id), signed with a local CDM (which you usually are not supposed to have access to). The license server validates the signature, and if valid replies with the license response. The reponse again is encrypted by the certificate from your local CDM and contains the keys. As you are not supposed to have access to the local CDM (at least not the CDM that your browser uses), you simply cannot decrypt the response.

This is where the extracted CDM's come into play: your script can generate a challenge for a license request, and the response for this request can be decrypted. This is basically asymmetric cryptography.

The practical details are explained in the stickies series by A_n_g_e_l_a - please take a look at these threads.

[doughnuts]

Run that script and add some print() where you don't figure out which part is the one you are looking for.

pssh = getpssh(mpd_url) -> pssh is extracted from mpd
keys = getkeys(pssh,lic_url) -> key is obtain with pssh and license url that come from this request : data = requests.get(f'https://edge.api.brightcove.com/playback/v1/accounts/{account_id}/videos/{videoid}', headers=headers).json()

Getting error. Maybe Widevine was updated?

AAAAVnBzc2gAAAAA7e+LqXnWSs6jyCfc1R0h7QAAADYIARIQFVg4mQ3JSsmNNJnpBf5P4BoNd2lkZXZpbmVfdGVzdCIIMTIzNDU2NzgyB2RlZmF1bHQ=
https://manifest.prod.boltdns.net/license/v1/cenc/widevine/6415643985001/a1b08073-4a55-4e85-9ef5-2d7ba3907c7a/15583899-0dc9-4ac9-8d34-99e905fe4fe0?fastly_token=NjY4NGY2MDVfYTJkMjNiMDYzZDk4ZDVmYTI5NWQ5ZmNhM2EzYjI1MWMyNjlkNTY4ZTY4MjY5OTJkZDJhNmI4MjMzMGE4MDM0Ng%3D%3D
Failed to load Widevine CDM: expected b'WVD' but parsed b'MZx'
    parsing -> signature
N_m3u8DL-RE "https://manifest.prod.boltdns.net/manifest/v1/dash/live-baseurl/bccenc/6415643985001/a1b08073-4a55-4e85-9ef5-2d7ba3907c7a/6s/manifest.mpd?fastly_token=NjY4NGY2MDVfMWJmZWExZjQ1MDVjZjBlODhlNTJiMGRhY2JiYmEyYmI0ZWU4OWY2MTY2YzlmYzFhYTRkYWMwOGI2NDRiMDlkMQ%3D%3D" --save-name "Press Conference (with Subtitles) | 6/16/2024 NEW JAPAN SOUL 2023" --select-video best --select-audio all --select-subtitle all -mt -M format=mkv  --log-level*OFF*--key

[doughnuts]

I want to know how this decryption works. I have some leads PSSH + License Response = Decryption Key. I don't know how to extract the key from these. Please don't point me to some website that generates the key using PSSH and License server URL. I want to understand how it works. Thanks for your time.

But that's exactly how it works. Your browser/app/... generates a license request (the "challenge") with the PSSH (which contains the key id), signed with a local CDM (which you usually are not supposed to have access to). The license server validates the signature, and if valid replies with the license response. The reponse again is encrypted by the certificate from your local CDM and contains the keys. As you are not supposed to have access to the local CDM (at least not the CDM that your browser uses), you simply cannot decrypt the response.

This is where the extracted CDM's come into play: your script can generate a challenge for a license request, and the response for this request can be decrypted. This is basically asymmetric cryptography.

The practical details are explained in the stickies series by A_n_g_e_l_a - please take a look at these threads.

Thanks, I will look into it