Need help identifying PSSH

[Zendria]

File is in the m3u8 format, no sign of PSSH found in m3u8 file

Not sure, whether data mentioned in URI is PSSH ?

#EXT-X-KEY:METHOD=ISO-23001-7,URI="data:;base64,AAAAAGR/+M8AHRNrT5js1Q=="

1st req, empty payload
2nd req custom json payload used to get licence

adamId: "1696108367"
challenge: CAESxB0SLAoqChQIARIQAAAAAGR/+M8AHRNrT5js1RABGhCP......""
isLibrary: true
key-system: "com.widevine.alpha"
uri: "data:;base64,AAAAAGR/+M8AHRNrT5js1Q=="
user-initiated: true

Any idea how to get keys as there no pssh mentioned anywhere but from payload it is clear that the key system used is widevine ?

[aqzs]

Is that for Apple Music service ?

[white_snake]

Have you tried grabbing the PSSH from EME Logger or the init file?

[aqzs]

Apple Music use .m3u8. From :

#EXT-X-KEY:METHOD=ISO-23001-7,URI="data:;base64,AAAAAGR/+M8AHRNrT5js1Q=="

You get the pssh :

import base64
from pywidevine.pssh import PSSH
from uuid import UUID

string = "AAAAAGhayXIAId7Be3y6GQ=="
print(base64.b64decode(string).hex())

keyID = [base64.b64decode(string).hex()]
pssh = PSSH.new(key_ids=keyID, system_id=UUID("edef8ba9-79d6-4ace-a3c8-27dcd51d21ed"))
print('pssh: ', pssh)

pssh :

AAAAMnBzc2gAAAAA7e+LqXnWSs6jyCfc1R0h7QAAABISEAAAAABoWslyACHewXt8uhk=

Then you need a custom python script to get the key.

[Baldrick]

Nope. You must include a link to the video.