Electrical computers and digital processing systems: support – Multiple computer communication using cryptography – Protection at a particular protocol layer
Reexamination Certificate
2006-08-22
2006-08-22
Revak, Christopher (Department: 2131)
Electrical computers and digital processing systems: support
Multiple computer communication using cryptography
Protection at a particular protocol layer
C713S189000, C713S194000, C726S006000, C380S266000
Reexamination Certificate
active
07096353
ABSTRACT:
A communications system includes a physical layer hardware unit and a processing unit. The physical layer hardware unit is adapted to communicate data over a communications channel in accordance with assigned transmission parameters and receive an incoming signal over the communications channel and sample the incoming signal to generate a digital received signal. The processing unit is adapted to execute a standard mode driver in a standard mode of operation and a privileged mode driver in a privileged mode of operation. The standard mode driver includes program instructions adapted to extract encrypted data from the digital received signal and pass the encrypted data to the privileged mode driver. The privileged mode driver includes program instructions adapted to decrypt the encrypted data to generate decrypted data including control codes and transfer the control codes to the physical layer hardware unit.
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Barclay Michael
Barnes Brian C.
Cole Terry L.
Schmidt Rodney
Smith David W.
Advanced Micro Devices , Inc.
Moorthy Aravind K
Revak Christopher
Williams Morgan & Amerson
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