PhD students and caching
Hello
from what I understand, when you use a DOCTORATE, the content encryption key is built from the common-key and ID of content (which, in a PHD, seems to be the name of the file).
When to go look for the manifest file (< file > .f4m), a new license is returned each time.
During the extraction of the current file (< file > SegX-FragY) segments, no 'session' or similar information is sent. However, the file that results is never the same between downloads.
Even if the files are different between extractions, it seems that if I hide segments, serving the same identical segmentes to different users, different license without their decryption problem.
Is this something that I can rely on? That is to say, I let the obvious requests through each time, so each customer gets a their own license. As long as the common-key remains the same, is it safe to cache segment files, so this allows us to use regular HTTP puts cache before the FMIS server to scale?
The diffs in the segment files, why is this? What is the result of different IVs?
In addition, the development of FMIS Server version has no limitation as to the number of connections or otherwise? Features of RTMP protocol has 10 rule max connections if I recall correct, but the same does not seem to apply for HDS/PhD students. I just want to check if this is the case, or if something in our tests broke.
Thank you
Yes, common-key (file) and Content ID (any unique string that represents your content) is used to generate the final encryption key.
During extraction of file f4m, a drm that Meta is generated that includes the license (so the client (AIR app/Flash app) need not not to communicate with the license server). DRM is incorporated into the F4m or served separately. It is unique by the content.
Real content file is encrypted with the encryption key and is therefore likely. Meta-data DRM has all the information on the type of customer, this is acceptable and time-validity of license integrated as imposed by the policy file on the server.
Tags: Adobe Media Server
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