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Speeding up galois counter mode (GCM) computations

A counter mode, Galois technology, applied in the field of computing, can solve the problems of time-consuming, high cost, high cost, etc.

Inactive Publication Date: 2011-12-14
INTEL CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method is domain specific and expensive for some implementations
[0007] Therefore, existing techniques for performing computations associated with GCMs are time consuming and / or costly

Method used

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  • Speeding up galois counter mode (GCM) computations
  • Speeding up galois counter mode (GCM) computations
  • Speeding up galois counter mode (GCM) computations

Examples

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Embodiment Construction

[0031] In the following description, numerous specific details are set forth in order to provide a thorough understanding of various embodiments. However, various embodiments of the invention may be practiced without these specific details. In other instances, well-known methods, procedures, components and circuits have not been described in detail so as not to obscure the understanding of the particular embodiments of the invention. Furthermore, various aspects of embodiments of the invention may be implemented using various components such as integrated semiconductor circuits ("hardware"), computer readable instructions organized into one or more programs ("software"), or some combination of hardware and software. way to execute. For the purposes of this disclosure, reference to "logic" shall mean hardware, software (including, for example, microcode that controls the operation of a processor), or some combination thereof. Also, the use of "instruction" or "micro-operation...

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PUM

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Abstract

Methods and apparatus to speed up Galois Counter Mode (GCM) computations are described. In one embodiment, a carry-less multiplication instruction may be used to perform operations corresponding to verification of an encrypted message in accordance with GCM. Other embodiments are also described.

Description

[0001] related application [0002] This application claims priority to, and is a continuation in part of, U.S. Patent Application No. 11 / 729,214, filed March 28, 2007, entitled "SPEEDING UP THE COMPUTATION OF MESSAGEAUTHENTICATION CODES FOR NETWORK COMMUNICATIONS," which is hereby incorporated by reference Incorporated in this article. technical field [0003] The present disclosure relates generally to the field of computing. More specifically, embodiments of the invention generally relate to techniques for accelerating Galois Counter Mode (GCM) computations. Background technique [0004] In cryptography, a block cipher can be a symmetric-key cipher that operates on fixed-length groups of bits called "blocks". For example, during encryption, a block cipher may take a 128-bit plaintext block as input and output a corresponding 128-bit ciphertext block based on the secret key. For decryption, the original 128-bit plaintext block can be determined using the 128-bit ciphert...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F7/72H04L9/06
CPCH04L9/0631H04L9/3242G06F7/724H04L2209/043H04L9/0643
Inventor S·格伦M·E·库纳维斯
Owner INTEL CORP
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