Electrical computers and digital processing systems: support – Multiple computer communication using cryptography – Particular communication authentication technique
Reexamination Certificate
2008-07-29
2008-07-29
Peeso, Thomas R. (Department: 2132)
Electrical computers and digital processing systems: support
Multiple computer communication using cryptography
Particular communication authentication technique
C713S155000, C713S159000
Reexamination Certificate
active
07406598
ABSTRACT:
A system on a chip (SOC) device is disclosed comprising external outputs, and external inputs. A first secure storage location is operably decoupled from all of the external outputs of the SOC device during a normal mode of operation. By being decoupled from all external outputs, representations of the data stored at the first secure device are prevented from being provided to the external outputs. The decryption engine is also included on the system on a chip, comprising a first data input, and a private key input coupled to a first portion of the first secure storage location, and an output coupled to a second secure location. The decryption engine is operable to determine decrypted data from data received at the first data input based upon a private key received at the private key input. The decryption engine is further operable to write the decrypted data only to the first secure memory location and the second secure location.
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Peeso Thomas R.
ViXS Systems Inc.
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