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chromecast fails to decrypt playready content after successfully getting license #666

Open GoogleCodeExporter opened 8 years ago

GoogleCodeExporter commented 8 years ago 
What steps will reproduce the problem?
1. own M-GO movie or UV movie and link your UV account to your M-GO account
2. use M-GO android application and connect to your chromecast, play movie
3. see playback fail due to failure to decrypt content with play ready license

What is the expected output? What do you see instead?
movie should play

What version of the product are you using? On what operating system?
chrome cast current firmware

Please provide any additional information below.
 here are the log entries of getting license and it failing to decrypt content:  accessToken has been xxed out on purpose for this posting.

The player can load media chunks correctly but playback will eventually fail 
with the following error:

[260.350s] [cast.player.core.MediaKeySession] keyerror

[260.357s] [cast.player.api.Host] error: cast.player.api.ErrorCode.MEDIAKEYS

It appears that the request to the license server successful, but of course 
playback fails.

I captured the request body and response from the license server, I hope it is 
helpful:

Request:

<?xml version="1.0" encoding="utf-8"?><soap:Envelope 
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
xmlns:xsd="http://www.w3.org/2001/XMLSchema" 
xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/"><soap:Body><AcquireLicens
e 
xmlns="http://schemas.microsoft.com/DRM/2007/03/protocols"><challenge><Challenge
 xmlns="http://schemas.microsoft.com/DRM/2007/03/protocols/messages"><LA 
xmlns="http://schemas.microsoft.com/DRM/2007/03/protocols" Id="SignedData" 
xml:space="preserve"><Version>1</Version><ContentHeader><WRMHEADER 
xmlns="http://schemas.microsoft.com/DRM/2007/03/PlayReadyHeader" 
version="4.0.0.0"><DATA><PROTECTINFO><KEYLEN>16</KEYLEN><ALGID>AESCTR</ALGID></P
ROTECTINFO><KID>JBP/OUM2C0ez2oj6/yHiIA==</KID><CHECKSUM>r/MzpJqDGJk=</CHECKSUM><
LA_URL>https://www.mgo.com/license/smoothstreaming</LA_URL><CUSTOMATTRIBUTES><II
S_DRM_VERSION>7.1.1565.4</IIS_DRM_VERSION></CUSTOMATTRIBUTES></DATA></WRMHEADER>
</ContentHeader><CLIENTINFO><CLIENTVERSION>2.5.0.1788</CLIENTVERSION></CLIENTINF
O><RevocationLists><RevListInfo><ListID>ioydTlK2p0WXkWklprR5Hw==</ListID><Versio
n>10</Version></RevListInfo><RevListInfo><ListID>gC4IKKPHsUCCVhnlttibJw==</ListI
D><Version>11</Version></RevListInfo><RevListInfo><ListID>BOZ1zT1UnEqfCf5tJOi/kA
==</ListID><Version>12</Version></RevListInfo><RevListInfo><ListID>Ef/RUojT3U6Ct
2jqTCChbA==</ListID><Version>26</Version></RevListInfo></RevocationLists><Custom
Data>contentID=MMVF4795D2C06F1315D043FB7E4DB93A2558 
accessToken=6fcc88fc1edc47b7aXXXXX definition=HD 
delivery=STREAM</CustomData><LicenseNonce>lj7dFPgaPZd1tuXKOfUOAA==</LicenseNonce
><EncryptedData xmlns="http://www.w3.org/2001/04/xmlenc#" 
Type="http://www.w3.org/2001/04/xmlenc#Element"><EncryptionMethod 
Algorithm="http://www.w3.org/2001/04/xmlenc#aes128-cbc"></EncryptionMethod><KeyI
nfo xmlns="http://www.w3.org/2000/09/xmldsig#"><EncryptedKey 
xmlns="http://www.w3.org/2001/04/xmlenc#"><EncryptionMethod 
Algorithm="http://schemas.microsoft.com/DRM/2007/03/protocols#ecc256"></Encrypti
onMethod><KeyInfo 
xmlns="http://www.w3.org/2000/09/xmldsig#"><KeyName>WMRMServer</KeyName></KeyInf
o><CipherData><CipherValue>TrI33EPlN0od88NhZgBAhWMG85DUb1PV4x7pBZDmwl0/vFIvl1Cck
uxAoRtVwNNVFlfiNiX6K1Q1nhX7DGXqOdA664CIK7/OwdlpBYb+9QXZMdgholjJMhLkxtjwLWQRW1wwA
1w2H+1QqEJXcFUt/VbbO1d4iAUsvkDz2pBGyOQ=</CipherValue></CipherData></EncryptedKey
></KeyInfo><CipherData><CipherValue>rcN5+sUBEl1p32JE+xaQ9Qbc4LxoZcu5umSI2hTTjzfq
r6h7uKJ/qbkvDWY/7sySI3MH9VMqieqKEy5aumh9geZClFyIWK0w+OYWsloenJY0dya9lRVVIxSaTg20
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lqRWzhZh/vnR9dIYRTXh2D+GWkHOuMdIb2St7I263hAHpXlveKVCbtPAc50x7ormW88ZJv62JLCuWir3
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TIMERjYoq0J95ll2G/cxm7NegyKhyJTth1ZO5Q1PTECr5Kq/Z59Vi+M+m/yo8K2fxjfYjkKZgsZBsQrt
q0GIGogwfcEZgBytoPCE76IhV8Et/MBU8K7Kj9MH0KqhxPcD9Xe8uu+DlYQSopu/Mgtfm8nkQQeBgYCG
kUNaikZNBN4dJdkbuAeF</CipherValue></CipherData></EncryptedData></LA><Signature 
xmlns="http://www.w3.org/2000/09/xmldsig#"><SignedInfo 
xmlns="http://www.w3.org/2000/09/xmldsig#"><CanonicalizationMethod 
Algorithm="http://www.w3.org/TR/2001/REC-xml-c14n-20010315"></CanonicalizationMe
thod><SignatureMethod 
Algorithm="http://schemas.microsoft.com/DRM/2007/03/protocols#ecdsa-sha256"></Si
gnatureMethod><Reference URI="#SignedData"><DigestMethod 
Algorithm="http://schemas.microsoft.com/DRM/2007/03/protocols#sha256"></DigestMe
thod><DigestValue>jPaB+wZcRU8fQWJUrkd+wFqYFIwsx3DKYtamrThFwsY=</DigestValue></Re
ference></SignedInfo><SignatureValue>r8cshogs8x+4dxxTRuHeQ+pMgF8VnbSPXaEHf2la7dm
lpDN3sCZXP7dHHh9CwzyMxpgPcALdsH4Bkd8TGJAgPg==</SignatureValue><KeyInfo 
xmlns="http://www.w3.org/2000/09/xmldsig#"><KeyValue><ECCKeyValue><PublicKey>TtP
WJyQI9A3OhuC4dIDGhhAz59lNm9WdFQNsm0TYHqzmXfRR6cUSnQ3VoMIE8FF6s5b6MlgsaOwwnxz9mRs
hxA==</PublicKey></ECCKeyValue></KeyValue></KeyInfo></Signature></Challenge></ch
allenge></AcquireLicense></soap:Body></soap:Envelope>

Response

<?xml version="1.0" encoding="utf-8"?><soap:Envelope 
xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/" 
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
xmlns:xsd="http://www.w3.org/2001/XMLSchema"><soap:Body><AcquireLicenseResponse 
xmlns="http://schemas.microsoft.com/DRM/2007/03/protocols"><AcquireLicenseResult
><Response 
xmlns="http://schemas.microsoft.com/DRM/2007/03/protocols/messages"><LicenseResp
onse xmlns="http://schemas.microsoft.com/DRM/2007/03/protocols" 
Id="SignedData"><Version>1</Version><Licenses><License>WE1SAAAAAANemQuPnpyxSb7H2
LeUtZAEAAMAAQAAAQYAAgAEAAAAKAACADYAAAAgAAAAOQAAABjYJ2Z4psK+RI+ICK4lWwGnAAMAAgAAA
FAAAQAwAAAADAAnjQAAAQASAAAAEAAAAABWRueTAAAAEwAAAAxWH0yDAAEAMgAAAAwAAAANAAEANAAAA
AoAlgAAADMAAAAKAAIAAwAJAAAAagABAAoAAAA+JBP/OUM2C0ez2oj6/yHiIAABAAIAIOqvPAGXtfLeU
SxBmu+KByD4EsoZIqgOAZVBp1D2J/37AAEAOwAAACRY2yKlkaUySK+xPuVpT4bhAAEACN66PyhKqsADA
AEACwAAABwAAQAQCuwAmIUq3SzDNYXLohjgOQ==</License><License>WE1SAAAAAANiLMjQyK46TK
MHDacmwe1kAAMAAQAAAVIAAgAEAAAACAADAAIAAAA0AAAAEwAAAAxWH0yDAAEAMgAAAAwAAAANAAEANA
AAAAoAlgAAADMAAAAKAAEAAwAJAAAA8gABAAoAAACeWNsipZGlMkivsT7laU+G4QADAAMAgPplKMUHqD
7q3ibvrj6EnsCGGQyY+msdTyY+rinyx4XXsUJliFic+Gz7reZ0OpfnSL64w6n0vjRlDTxLhfamc4LGLr
YsxrB5UC/nN/3romKUkHAWXf42CInIJx7qj1KhI5NZJRl6Fr2gxCF5nedid6JrbwfrTVcgAP54NieOBn
EeAAAAKgAAAEwAAQBA6ElP+O0yql/pzK2FcY4FCgjezNt5RWQpYlcjG+rG4Dhce+tg4KzqSeUfcXEhSY
Jzb9A2qubrdKo3vDQw5oDpkAABAAsAAAAcAAEAEJNf/rRYpEdcq8N1Ee8i9JQ=</License></Licens
es><CustomData>contentID=MMVF4795D2C06F1315D043FB7E4DB93A2558 
accessToken=6fcc88fc1edc47b7afe4ff6c4ebe86ed definition=HD 
delivery=STREAM</CustomData><LicenseNonce>lj7dFPgaPZd1tuXKOfUOAA==</LicenseNonce
><ResponseID>CRYFqe6V4tpm6IKfFgFIWNmY4WiU7NBrX269iSRsZJI=</ResponseID><SigningCe
rtificateChain>Q0hBSQAAAAEAAAOQAAAAAAAAAAJDRVJUAAAAAQAAAcwAAAE8AAEAAQAAAFg4fKUXR
sBZfyOKLWGnjERZAAAAAAAAAAAAAAALBUFfyjqkPgZM+1X00HK9sJZqAxITC69QC+cZa+j0jx5W1NuAA
AAAAAAAAAAAAAAAAAAAAAABAA8AAAAMAAAALQABAAUAAAAQAAAAAQAAAAwAAQAGAAAAYAAAAAEAAQIAA
AAAAM8GTuJNkV2tSvbiY52GW/XLCwrM/rsJurpMNTy9QbGVnGvQ768brlinUyJdb55HIGNzUUtVss5r7
MMITSVKn5YAAAACAAAAAQAAABQAAAAHAAAAWAAAAAAAAAAQTWVkaWFOYXZpQ28gTExDAAAAAChQbGF5U
mVhZHkgU2VydmVyIERlcGxveW1lbnQgQ2VydGlmaWNhdGUAAAAABjQyMDMxAAAAAAEACAAAAJAAAQBA0
D2TZ2MqoCvJAochT8nBPRjo8hRTX5rL7G1sF2qh5GtAzGHhJcEnjfGxlqoUtL7FCCgx9Sl9sVbqtt6Oz
jA+rAAAAgDNHddz+oiHRZKMm1Isw8y5uUHyJ1K/jzTaWU4vRKMhRXXtR1kr7zsmMQzhfLUrgo+JXj+DJ
/N1yZvDCwxGfEYmQ0VSVAAAAAEAAAGwAAABIAABAAEAAABYmgoLNjK7RTGjazONWZH0bwAAAAAAAAAAA
AAABPaIVPWtSmiciPW1MKsGlcQTqO0eMUvoBvB79BEnQbZ8/////wAAAAAAAAAAAAAAAAAAAAAAAQAFA
AAADAAAAAAAAQAGAAAAYAAAAAEAAQIAAAAAAM0d13P6iIdFkoybUizDzLm5QfInUr+PNNpZTi9EoyFFd
e1HWSvvOyYxDOF8tSuCj4leP4Mn83XJm8MLDEZ8RiYAAAACAAAAAQAAAA8AAAAHAAAATAAAAAAAAAAKT
Wljcm9zb2Z0AAAAAAAAHVBsYXlSZWFkeSBTTDAgU2VydmVyIFJvb3QgQ0EAAAAAAAAACDEuMC4wLjEAA
AEACAAAAJAAAQBAOjj5VWrMfYHeH+3Z2aEthKFrm6yhopLn5sdhw99G8nBbuad9WMOvWC1ZHklRdhhDt
f07US/Y7sNA9sBLQpff8wAAAgCGTWHP8iVuQixWizwoABz7PhUnZYWEugUht5sYKNk23h2Cao/D5uf6e
pDVyilG8fZKLvufXc/+fkNOtEKT+sWr</SigningCertificateChain></LicenseResponse><Sign
ature xmlns="http://www.w3.org/2000/09/xmldsig#"><SignedInfo 
xmlns="http://www.w3.org/2000/09/xmldsig#"><CanonicalizationMethod 
Algorithm="http://www.w3.org/TR/2001/REC-xml-c14n-20010315"></CanonicalizationMe
thod><SignatureMethod 
Algorithm="http://schemas.microsoft.com/DRM/2007/03/protocols#ecdsa-sha256"></Si
gnatureMethod><Reference URI="#SignedData"><DigestMethod 
Algorithm="http://schemas.microsoft.com/DRM/2007/03/protocols#sha256"></DigestMe
thod><DigestValue>u25x0G/Yo/x+xyB/x1Co1T874yCj2UAxLPJUp5sqYcg=</DigestValue></Re
ference></SignedInfo><SignatureValue>ep95wj7oYytX3bYfmNvQSQuyEE7FmKGS/O/zKsjQm+5
szSS6H+WARhWjSL3PPImb7CCW4ZEfwUkngmgWQwfkjA==</SignatureValue></Signature></Resp
onse></AcquireLicenseResult></AcquireLicenseResponse></soap:Body></soap:Envelope
>

Original issue reported on code.google.com by lee.shar...@mgo.com on 16 Oct 2015 at 6:58

GoogleCodeExporter commented 8 years ago 
When did you start seeing this issue? Can you provide any videos for which 
you're seeing this behavior?

Original comment by jonathan...@google.com on 16 Oct 2015 at 8:59

GoogleCodeExporter commented 8 years ago 
well it was also reported 
here:https://code.google.com/p/google-cast-sdk/issues/detail?id=669

1. Setup the CastMediaPlayerStreamingDRM example receiver and sender.
2. Enter the following media URL: 
http://playready.directtaps.net/smoothstreaming/SSWSS720H264PR/SuperSpeedway_720
.ism/Manifest
3. Click on "Load Media"

Or 

1. create an account on mgo.com
2. find free tv episode for Crazy Ex girlfriend
3. get it.
4. connect to chromecast
5. play episode.

Original comment by lee.shar...@mgo.com on 20 Oct 2015 at 6:47

GoogleCodeExporter commented 8 years ago 
So are you seeing the issue on Chromecast firmware version 44433 and previously 
saw that it worked on 38401, as mentioned in 669?

Original comment by jonathan...@google.com on 20 Oct 2015 at 5:59

GoogleCodeExporter commented 8 years ago 
[deleted comment]
GoogleCodeExporter commented 8 years ago 
^ yes, firmware 44433 is where we are seeing the issue, and 38401 it was 
working fine.

Original comment by hans....@mgo.com on 20 Oct 2015 at 9:56

GoogleCodeExporter commented 8 years ago 
Issue 669 has been merged into this issue.

Original comment by jonathan...@google.com on 26 Oct 2015 at 7:08

GoogleCodeExporter commented 8 years ago

Original comment by jonathan...@google.com on 26 Oct 2015 at 7:11

GoogleCodeExporter commented 8 years ago 
We would like to increase the priority to "high".
Can you recommend some kind of workaround until Google resolves the issue? Is 
there a way of reverting back to a previous firmware version?

Original comment by devdev0...@gmail.com on 28 Oct 2015 at 8:49

GoogleCodeExporter commented 8 years ago 
Unfortunately, you won't be able to revert to a previous firmware version. A 
ticket for this was filed internally but I can't say when it will be resolved.

Original comment by jonathan...@google.com on 29 Oct 2015 at 6:31

GoogleCodeExporter commented 8 years ago 
Any news? We are waiting for a correction of this problem. We can't continue 
our development. When can we expect a fix/update?

Original comment by devdev0...@gmail.com on 22 Nov 2015 at 9:33

GoogleCodeExporter commented 8 years ago 
We've identified the cause of the issue and suggested a workaround M-GO can use 
until the fix is released, although we don't know when they will implement that 
workaround.

Original comment by jonathan...@google.com on 23 Nov 2015 at 6:03

GoogleCodeExporter commented 8 years ago 
What is the suggested workaround? We're facing similar issue with a big 
customer...

Original comment by pawel.sa...@gmail.com on 24 Nov 2015 at 1:31

GoogleCodeExporter commented 8 years ago 
The solution described to M-Go was that the current firmware cannot handle 
Microsoft PlayReady chained (Root or Leaf) license response and the license 
server needs to return a simple license.  the next scheduled firmware update 
that will fix this issue is scheduled in Q1 next year.

I have not been able to confirm that switching the license type returned by the 
PlayReady license server will actually fix the problem. 

The fix we are going to implement is to switch over to use DASH and Widevine.

Original comment by lee.shar...@mgo.com on 24 Nov 2015 at 3:39

GoogleCodeExporter commented 8 years ago 
We just tried DASH with PlayReady and the problem doesn't happen. In other 
words, we are able to view the (encrypted) content. Does this make sense?

Original comment by devdev0...@gmail.com on 16 Dec 2015 at 9:29

GoogleCodeExporter commented 8 years ago 
could be the issue is around how the license server issues the license.  
PlayReady license server can return a chained or simple license.  If the 
license server returns a simple license then the decryption works on 
chromecast.  MGO had to modify the license server to make sure that it returns 
a simple license and then all play ready works.

Original comment by lee.shar...@mgo.com on 16 Dec 2015 at 10:22

GoogleCodeExporter commented 8 years ago 
Since issue 669 has been noted as duplicate, I'm adding the info here.

Customer is experiencing the issue that since the firmware update in october 
(1.16.44433), PlayReady protected content cannot be played anymore.
Customer is using SmoothStreaming with PlayReady, but the same error is 
experienced with Dash and PlayReady.

Versions used:
Firmware: 1.17.48342
cast_receiver.js:40  [  0.203s] [cast.receiver.CastReceiverManager] Version: 
2.0.0.0040
media_player.js:21  [  8.824s] [cast.player.api.Player] Version: 1.0.0.25

PlayReady used:
Simple non persistent PlayReady licenses. Security Level 2000

Obeservations:
ChromeCast stick won't play the media, license server is not contacted.
same stream works flawless on Silverlight.

Error as follows:

media_player.js:21  [ 10.423s] [cast.player.core.MediaKeysManager] unsupported 
protection system
media_player.js:21  [ 10.438s] [cast.player.api.Host] error: 
cast.player.api.ErrorCode.MEDIAKEYS Ab @ media_player.js:21yb.Dh @ 
media_player.js:21cb.log @ media_player.js:18z @ media_player.js:22M @ 
media_player.js:68Vg @ media_player.js:206(anonymous function) @ 
media_player.js:206

(more extensive log attached ; http urls were obfuscated)

Please note:

- this is not really in line with the previous remarks #14 and #15 which state 
that PlayReady should work with simple licenses.
- packet traces were taken and no attempt is being made by the ChromeCast stick 
to call the license server.

Original comment by krab...@gmail.com on 7 Jan 2016 at 7:44

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