Need help decrypting a mp4 video (MPD)

<MPD
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns="urn:mpeg:dash:schema:mpd:2011"
xsi:schemaLocation="urn:mpeg:dash:schema:mpd:2011 http://standards.iso.org/ittf/PubliclyAvailableStandards/MPEG-DASH_schema_files/DASH-MPD.xsd"
type="static"
mediaPresentationDuration="PT300.000S"
minBufferTime="PT10S"
profiles="urn:mpeg:dashrofile:isoff-live:2011">
<Period>
<AdaptationSet
id="1"
segmentAlignment="true"
maxWidth="1280"
maxHeight="720"
maxFrameRate="25">
<ContentProtection schemeIdUri="urn:mpeg:dash:mp4protection:2011" value="cenc"/>
<ContentProtection xmlns:cenc="urn:mpeg:cenc:2013" schemeIdUri="urn:uuid:edef8ba9-79d6-4ace-a3c8-27dcd51d21ed" cenc:default_KID="a5c2269c-9ffa-507c-1f24-b53e93ebf39f">
<cencssh>AAAAY3Bzc2gAAAAA7e+LqXnWSs6jyCfc1R0h7QAAAEMIARIQpcImnJ/6UHwfJLU+k+vznxoDRVJSIiRBNUMyMjY5Qy05RkZBLTUwN0MtMUYyNC1CNTNFOTNFQkYzOUYqAkhE</cencssh>
</ContentProtection>
<ContentProtection xmlns:mspr="urn:microsoftlayready" schemeIdUri="urn:uuid:9a04f079-9840-4286-ab92-e65be0885f95">
<msprro>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</msprro>
</ContentProtection>

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