Creation of local usage rights voucher

1. A method of restricting access to digital content data, comprising:

storing the digital content data on a user device;

classifying the digital content data to determine whether the digital content data is controlled digital content data or non-controlled digital content data;

if the digital content data is controlled digital content data:

storing a trusted voucher on the user device, the trusted voucher being associated with the controlled digital content data and comprising at least one permitted function; and

restricting access to the controlled digital content data by the user device to said at least one permitted function; and

if the digital content data is non-controlled digital content data:

associating a local voucher stored on the user device with the non-controlled digital content data, the local voucher comprising at least one intended function;

restricting access to the non-controlled digital content data by the user device to said at least one intended function;

restricting access to the non-controlled digital content data based on a physical characteristic of the user device; and

wherein the physical characteristic includes one or more of a maximum number of non-controlled digital content data stored on the user device, and a duration of time since the storing of the digital content data on the user device.

2. The method of claim 1 , wherein if an installed number of non-controlled digital content data stored on the user device equals the maximum number of non-controlled digital content data stored on the user device, before the storing of the digital content data, the method further comprises:

selecting an installed non-controlled digital content data from the installed number of non-controlled digital content data stored on the user device; and

deleting the installed non-controlled digital content data.

3. The method of claim 2 , further comprising:

deleting the local voucher associated with the installed non-controlled digital content data.

4. A computer system for restricting access to digital content data, comprising:

a memory device; and

a processor disposed in communication with the memory device, the processor configured to:

store the digital content data on a user device;

classify the digital content data to determine whether the digital content data is controlled digital content data or non-controlled digital content data;

if the digital content data is controlled digital content data:

store a trusted voucher on the user device, the trusted voucher being associated with the controlled digital content data and comprising at least one permitted function;

restrict access to the controlled digital content data by the user device to said at least one permitted function;

if the digital content data is non-controlled digital content data:

associate a local voucher stored on the user device with the non-controlled digital content data, the local voucher comprising at least one intended function; and

restrict access to the non-controlled digital content data by the user device to said at least one intended function;

restrict access to the non-controlled digital content data based on a physical characteristic of the user device; and

wherein the physical characteristic includes one or more of a maximum number of non-controlled digital content data stored on the user device, and a duration of time since storing the digital content data on the user device.

5. The computer system of claim 4 , wherein if an installed number of non-controlled digital content data stored on the user device equals the maximum number of non-controlled digital content data stored on the user device, before storing the digital content data, the processor is further configured to:

select an installed non-controlled digital content data from the installed number of non-controlled digital content data stored on the user device; and

delete the installed non-controlled digital content data.

6. The computer system of claim 5 , wherein the processor is further configured to:

delete the local voucher associated with the installed non-controlled digital content data.

7. A computer program product for restricting access to digital content data, comprising:

a computer readable medium;

program code in the computer readable medium for storing the digital content data on a user device;

program code in the computer readable medium for classifying the digital content data to determine whether the digital content data is controlled digital content data or non-controlled digital content data;

program code in the computer readable medium for storing a trusted voucher on the user device, the trusted voucher being associated with the controlled digital content data and comprising at least one permitted function;

program code in the computer readable medium for restricting access to the controlled digital content data by the user device to said at least one permitted function;

program code in the computer readable medium for associating a local voucher stored on the user device with the non-controlled digital content data, the local voucher comprising at least one intended function;

program code in the computer readable medium for restricting access to the non-controlled digital content data by the user device to said at least one intended function;

program code in the computer readable medium for restricting access to the non-controlled digital content data based on a physical characteristic of the user device; and

wherein the physical characteristic includes one or more of a maximum number of non-controlled digital content data stored in the user device, and a duration of time since the storing of the digital content data on the user device.

8. The computer program product of claim 7 , wherein program code in the computer readable medium further comprises:

program code in the computer readable medium for comparing an installed number of non-controlled digital content data stored on the user device to the maximum number of non-controlled digital content data stored on the user device;

program code in the computer readable medium for selecting an installed non-controlled digital content data from the installed number of non-controlled digital content data stored on the user device; and

program code in the computer readable medium for deleting the installed non-controlled digital content data.

9. The computer program product of claim 8 , further comprising:

program code in the computer readable medium for deleting the local voucher associated with the installed non-controlled digital content data.