Simple algorithmic cryptography engine
US7032100B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 17, 1999 |
| Grant date | Apr 18, 2006 |
| Priority date | — |
| Expiry date | Dec 17, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F9/323
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A processor architecture and instruction set is provided that is particularly well suited for cryptographic processing. A variety of techniques are employed to minimize the complexity of the design and to minimize the complexity of the interconnections within the device, thereby reducing the surface area required, and associated costs. A variety of techniques are also employed to ease the task of programming the processor for cryptographic processes, and to optimize the efficiency of instructions that are expected to be commonly used in the programming of such processes. In a preferred low-cost embodiment, a single-port random-access memory (RAM) is used for operand storage, few data busses and registers are used in the data-path, and the instruction set is optimized for parallel operations within instructions. Because cryptographic processes are characterized by operations on wide data items, particular emphasis is placed on the efficient processing of multi-word operations, including the use of constants having the same width as an instruction word. A simplified arithmetic unit is provided that efficiently supports the functions typically required for cryptographic operations wit…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.