US 2010/0235633 A1 · AUTHENTICATION AND ENCRYPTION UTILIZING COMMAND INDENTIFIERS

Abstract

A data processing system, recording device, data processing method and program providing medium are provided to execute authentication processing and content storing processing between apparatuses. Program localization is employed to restrict access to program content. A plurality of key blocks store key data for authentication processing. Key block designation information is set in a recorder/reproducer, which is configured for executing authentication processing with the recording device by designating a key block. The recorder/reproducer can set a key block for each product, model or the like. In addition, data stored according to a selected key block cannot be utilized in a recorder/reproducer in which a different key block is set. Furthermore, an encryption processing controlling section of a recording device executes control in accordance with a pre-defined setting sequence. Furthermore, an illegal instrument that has not completed the authentication processing can be prevented from utilizing program content.

Claims26

Dependent claims

A data processing system operable to transmit encryption data, said data processing system comprising:

a first apparatus having a command identifier;
and
a second apparatus having an encryption processing section for executing encryption processing on data transmitted to and from said first apparatus, said encryption processing section including a control section operable to receive said command identifier in accordance with a pre-defined setting sequence, to retrieve a command from a register, said command corresponding to said command identifier, and to have said command executed;
wherein, if said command identifier differs from said predefined setting sequence, said control section is operable to cancel execution of said command, said pre-defined setting sequence being a command number setting sequence in which numbers are sequentially incremented.

1 more element

A recording device, comprising:

a data storage section operable to store content data that is transferable to an external apparatus;
and
an encryption processing section operable to execute encryption processing of transmission data with said external apparatus, said encryption processing section including a control section operable to receive a command identifier transferred from said external apparatus in accordance with a setting sequence, to retrieve a command from a register, said command corresponding to said command identifier, and to have said command executed, said control section further including a command number setting sequence in which numbers are sequentially incremented as said setting sequence;
wherein, if said command identifier differs from said setting sequence, said control section is operable to cancel processing of said command.

1 more element

A data processing method in a data processing system having a first apparatus and a second apparatus operable to transmit encryption data to each other, said method comprising:

executing command processing control in said second apparatus for receiving a command identifier in accordance with a setting sequence, said command identifier being transferred from said first apparatus;
retrieving a command corresponding to said command identifier from a register;
processing said command;
and
if said command identifier is different from said setting sequence, canceling said processing of said command;
wherein said setting sequence is a command number setting sequence in which numbers are sequentially incremented.

3 more elements

Dependencies are inferred from the claim text.

Authentication and encryption utilizing command indentifiers

Life of this patent

Authentication and encryption utilizing command indentifiers

Life of this patent

Abstract

Claims26