free ringtone panasonic Next page: Three-Way Protection. Existing products that use the current OMA DRM 1. 0 specification protect copyrighted content, such as a ringtone, in three ways: by "forward-locking" content to a device like a mobile phone, and preventing it from being forwarded; by delivering both the ringtone and the right to play it a limited number of times via a single transaction; and by allowing users to forward the ringtone on to other users, who must pay to download the rights management to allow it to be used. This last "separate delivery" mechanism is the basis for what's known as "superdistribution," or letting users do the work of advertising the ringtone to their friends. DRM 1. 0 downloads were accomplished via HTTP or WAP. In both OMA DRM 1. 0 and 2. 0, each content file is placed in a secure 128-bit AES encrypted wrapper. A rights description tells the device exactly what the user can or cannot do with that content. OMA's DRM Version 2. 0 definition allows the rights description to be much more flexible.
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