Cryptography – Communication system using cryptography – Frequency shift or inversion
Reexamination Certificate
2003-12-05
2010-11-30
Vu, Kimyen (Department: 2435)
Cryptography
Communication system using cryptography
Frequency shift or inversion
C380S027000, C712S036000
Reexamination Certificate
active
07844053
ABSTRACT:
A microprocessor apparatus is provided, for performing a cryptographic operation. The microprocessor apparatus includes an x86-compatible microprocessor that has fetch logic, a cryptography unit, and an integer unit. The fetch logic is configured to fetch an application program from memory for execution by the x86-compatible microprocessor. The application program includes an atomic instruction that directs the x86-compatible microprocessor to perform the cryptographic operation. The atomic instruction has and opcode field and a repeat prefix field. The opcode field prescribes that the device accomplish the cryptographic operation as further specified within a control word stored in a memory. The repeat prefix field is coupled to the opcode field. The repeat prefix field indicates that the cryptographic operation prescribed by the atomic instruction is to be accomplished on a plurality of blocks of input data.
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Crispin Thomas A.
Henry G. Glenn
Parks Terry
Gyorfi Thomas
Huffman James W.
Huffman Richard K.
IP-First LLC
Vu Kimyen
LandOfFree
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