A Digital Rights Management works
A Digital Rights Management works in three levels: establishing a copyright for a piece of content, managing the distribution of that copyrighted content and controlling what a consumer can do with that content once it has been distributed. To accomplish these, there must be a clear definition of the levels and carefully establishing a relationship between them. A very common example shows where a user makes an online transaction.
Jane Doe, an internet user, is a registered member of an MP3-download site. Jane is paying so that she can download MP3s from this site. She intends to download the song by Lauren Hill entitled “Everything is everything”. Jane’s subscription entitles her to a 5 music download per month. In this scenario, the user is Jane and the content is “Everything is everything”. In order for Jane to access songs, she has a user ID and the content also has its product number for easy retrieval.
This is an easy task. The harder part is identifying the rights – the things Jane is allowed and not allowed to do. Based on the diagram, Jane is entitled to play copy and download the file. She is also entitled to a $1 off next month and this is one of the privileges she enjoys. Every time Jane logs in to the site, the user entity is still the same but the contents and the rights may differ since Jane will download and access different songs. (http://computer. howstuffworks. com/drm1. htm)
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