Encrypting content

You encrypt video content with the MediaEncrypter object. You can encrypt media files that include only audio tracks. You can also apply only partial encryption; for example, to improve performance when you encrypt H.264 content for lower-end devices.

To encrypt media files using the Java API:

  1. Set up your development environment and include all of the JAR files mentioned in Setting up the development environment within your project.

  2. Create a ServerCredential instance to load the credentials needed for signing.

  3. Create a MediaEncrypter instance. Use a MediaEncryperFactory if you do not know what type of file you have.

  4. Specify the encryption options by using a DRMParameters object.

  5. Set the signature options using a SignatureParameters object and pass the ServerCredential instance to its setServerCredentials method.

  6. Set the key and license information using an V2KeyParameters object. Set the DRM policies using the setPolicies method. Set the information needed by the client to contact the license server by calling the setLicenseServerUrl and setLicenseServerTransportCertificate methods. Set the CEK encryption options using the setKeyProtectionOptions method, and its custom properties using the setCustomProperties method. Finally, depending on the type of encryption used, cast the DRMKeyParameters object to the appropriate type ( VideoDRMParameters, AudioDRMParameters), and set the encryption options.

  7. Encrypt the content by passing the input and output files and encryption options to the MediaEncrypter.encryptContent method.

For sample code that shows how to encrypt content, see com.adobe.flashaccess.samples.mediapackager.EncryptContent in the Reference Implementation Command Line Tools samples/ directory.

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