Information reproducing apparatus and secure module

Details Information reproducing apparatus and secure module Information reproducing apparatus and secure module

2011-03-22

2011-03-22

Pyzocha, Michael (Department: 2437)

Electrical computers and digital processing systems: support

Data processing protection using cryptography

By stored data protection

C713S161000, C713S168000, C713S187000, C713S192000, C725S017000, C725S026000, C380S201000, C380S239000, C380S255000

Reexamination Certificate

active

07913094

ABSTRACT:
In an information reproducing apparatus having an open architecture, a secure module stores first information, and has a structure which does not allow access to the first information from outside, and a memory has a structure which can be accessed from outside. A decryption unit loaded in the memory decrypts an encryption applied to the first information by using a predetermined key. A key supply unit implemented in the secure module supplies the predetermined key to the decryption unit. An authentication unit implemented in the secure module supplies second information to the decryption unit, refers to third information returned in response to the second information, and checks for authenticity of the decryption unit. A key-supply stop unit implemented in the secure module stops supply of the predetermined key by the key supply unit when the authentication unit does not authenticate the decryption unit.

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