MediaDrm.CryptoSession

Class Overview

In addition to supporting decryption of DASH Common Encrypted Media, the MediaDrm APIs provide the ability to securely deliver session keys from an operator's session key server to a client device, based on the factory-installed root of trust, and then perform encrypt, decrypt, sign and verify operations with the session key on arbitrary user data.

The CryptoSession class implements generic encrypt/decrypt/sign/verify methods based on the established session keys. These keys are exchanged using the getKeyRequest/provideKeyResponse methods.

Applications of this capability could include securing various types of purchased or private content, such as applications, books and other media, photos or media delivery protocols.

Operators can create session key servers that are functionally similar to a license key server, except that instead of receiving license key requests and providing encrypted content keys which are used specifically to decrypt A/V media content, the session key server receives session key requests and provides encrypted session keys which can be used for general purpose crypto operations.

A CryptoSession is obtained using getCryptoSession(byte[], String, String)

Summary

[Expand] Inherited Methods

From class java.lang.Object Object clone() Creates and returns a copy of this Object. boolean equals(Object o) Compares this instance with the specified object and indicates if they are equal. void finalize() Invoked when the garbage collector has detected that this instance is no longer reachable. final Class<?> getClass() Returns the unique instance of Class that represents this object's class. int hashCode() Returns an integer hash code for this object. final void notify() Causes a thread which is waiting on this object's monitor (by means of calling one of the wait() methods) to be woken up. final void notifyAll() Causes all threads which are waiting on this object's monitor (by means of calling one of the wait() methods) to be woken up. String toString() Returns a string containing a concise, human-readable description of this object. final void wait() Causes the calling thread to wait until another thread calls the notify() or notifyAll() method of this object. final void wait(long millis, int nanos) Causes the calling thread to wait until another thread calls the notify() or notifyAll() method of this object or until the specified timeout expires. final void wait(long millis) Causes the calling thread to wait until another thread calls the notify() or notifyAll() method of this object or until the specified timeout expires.