| Adobe AIR 1.1 |
|
|
Using digital rights managementAdobe® Flash® Media Rights Management Server (FMRMS) provides media publishers the ability to distribute content, specifically FLV and MP4 files, and to recuperate production costs through direct (user-paid) or indirect (advertising-paid) compensation by their consumers. The publishers distribute media as encrypted FLVs that can be downloaded and played in Adobe® Media Player™, or any AIR application that makes use of the digital rights management (DRM) API. With FMRMS, the content providers can use identity-based licensing to protect their content with user credentials. For example, a consumer wants to view a television program, but does not want to watch the accompanying advertisements. To avoid watching the advertisements, the consumer registers and pays the content publisher a premium. The user can then use their authentication credential to gain access and play the program without the commercials. Another consumer may want to view the content offline while traveling with no internet access. After registering and paying the content publisher for the premium service, the user’s authentication credential allows them to access and download the program from the publisher’s website. The user can then view the content offline during the permitted period. The content is also protected by the user credentials and cannot be shared with other users. When a user tries to play a DRM-encrypted file, the application contacts the FMRMS which in turn contacts the content publisher’s system through their service provider interface (SPI) to authenticate the user and retrieve the license, a voucher that determines whether the user is allowed access to the content and, if so, for how long. The voucher also determines whether the user can access the content offline and, if so, for how long. As such, user credentials are needed to determine access to the encrypted content. Identity-based licensing also supports anonymous access. For example, anonymous access can be used by the provider to distribute ad-supported content or to allow free access to the current content for a specified number of days. The archive material might be considered premium content that must be paid for and requires user credentials. The content provider can also specify and restrict the type and version of the player needed for their content. How to enable your AIR application to play content protected with digital rights management encryption is described here. It is not necessary to understand how to encrypt content using DRM, but it is assumed that you have access to DRM-encrypted content and are communicating with FMRMS to authenticate the user and retrieve the voucher. For an overview of FMRMS, including creating policies, see the documentation included with FMRMS. For information on Adobe Media Player, see Adobe Media Player Help available within Adobe Media Player. |