PHDS, encryption weirdness?

hi,

 

in earlier post of mine (http://forums.adobe.com/message/4364896) stated content encryption key derived common-key , content id.

now, i've been experimenting this, inserting proxy doing filename translations between client , actual server, requests containing "999x222seg*" gets rewritten "999y222seg*", i.e. different filename. both "999x222.mp4" , "999y222.mp4" exists on server.

 

client requests /hds-vod/999x222.mp4.f4m, proxy forwards same. server sees 999x222_1400.mp4.f4m filename, , drmadditionalheader set drmcontentid="999x222.mp4" expected

 

now, client requests /hds-vod/999x222.mp4seg1-frag1 expected. translated in proxy, , server see request /hds-vod/999y222.mp4seg1-frag1, i.e. not same filename manifest issued for, , not same content id (?), mean content encryption key used.. however, client still able play video!

from understanding, should not possible? 999x222.mp4 , 999y222.mp4 2 different files, 2 different content ids, , should have 2 different content encryption keys. key initial manifest should able decrypt fragments 999x222, not 999y222?

 

fmis 4.5.2 used, , default /hds-vod phds config used, protection specifics follows:

encryptionscope server

protectionscheme phds

phdscommonkeyfile ../phds/common-key.bin

phdsplaybackexpiration "24hours"

phdsoutputprotection none

phdsvideoencryptionlevel 2

 

 

can shed light on this?

thank you

hi j_1234,

 

can give httpd conf ?

 

thank you.

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