Namespace encryption in non-volatile memory devices

A method implemented in a computer storage device, the method comprising:

• requiring a crypto key to be used in data access requests made in a first namespace allocated on a non-volatile storage media of the computer storage device;
• storing data in the first namespace in an encrypted form corresponding to the crypto key;
• freeing a portion of the non-volatile storage media from the first namespace, the portion storing the data;
• and
• making the portion of the non-volatile storage media available in a second namespace.

A non-transitory computer storage medium storing instructions which, when executed by a controller of a computer storage device, cause the controller to perform a method, the method comprising:

• requiring a crypto key to be used in data access requests made in a first namespace allocated on a non-volatile storage media of the computer storage device;
• storing data in the first namespace in an encrypted form corresponding to the crypto key;
• freeing a portion of the non-volatile storage media from the first namespace, the portion storing the data;
• and
• making the portion of the non-volatile storage media available in a second namespace.