Hi

I have here an encrypted .TS file.
Looks like this
"EXTM3U #EXT-X-VERSION:1 ## Created with Unified Streaming Platform(version=1.8.4) #EXT-X-MEDIA-SEQUENCE:1 #EXT-X-TARGETDURATION:2 #USP-X-TIMESTAMP-MAP:MPEGTS=900000,LOCAL=1970-01-01T00:00:00Z #EXT-X-KEY:METHOD=AES-128,URI="https://path.to.keyfile.key"
#EXTINF:2, no desc 3073348-254b3558904d2c594ae774fa00017497-audio=255982-video=5997000-1.ts #EXTINF:2, no desc 3073348-254b3558904d2c594ae774fa00017497-audio=255982-video=5997000-2.ts #EXTINF:2, no desc 3073348-254b3558904d2c594ae774fa00017497-audio=255982-video=5997000-3.ts #EXTINF:2, no desc 3073348-254b3558904d2c594ae774fa00017497-audio=255982-video=5997000-4.ts #EXTINF:2, no desc 3073348-254b3558904d2c594ae774fa00017497-audio=255982-video=5997000-5.ts #EXTINF:2, no desc 3073348-254b3558904d2c594ae774fa00017497-audio=255982-video=5997000-6.ts #EXTINF:2, no desc 3073348-254b3558904d2c594ae774fa00017497-audio=255982-video=5997000-7.ts #EXTINF:2, no desc 3073348-254b3558904d2c594ae774fa00017497-audio=255982-video=5997000-8.ts #EXTINF:2, no desc 3073348-254b3558904d2c594ae774fa00017497-audio=255982-video=5997000-9.ts #EXTINF:2, no desc 3073348-254b3558904d2c594ae774fa00017497-audio=255982-video=5997000-10.ts"

How is it possible to decrypt it? Maybe someone has a Guide.