Intel Advanced Vector Extensions (Avx); Advanced Encryption Standard New Instructions (Aes-Ni); Pclmulqdq Instruction - Intel 2ND GENERATION CORE PROCESSOR FAMILY DESKTOP - DATASHEET VOLUME 1 01-2011 Datasheet

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3.5 Intel
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Intel Advanced Vector Extensions (AVX) is the latest expansion of the Intel instruction
set. It extends the Intel
256-bit vectors. Intel AVX addresses the continued need for vector floating-point
performance in mainstream scientific and engineering numerical applications, visual
processing, recognition, data-mining/synthesis, gaming, physics, cryptography and
other areas of applications. The enhancement in Intel AVX allows for improved
performance due to wider vectors, new extensible syntax, and rich functionality
including the ability to better manage, rearrange, and sort data. For more information
on Intel AVX, see
3.6 Advanced Encryption Standard New Instructions
(AES-NI)
The processor supports Advanced Encryption Standard New Instructions (AES-NI) that
are a set of Single Instruction Multiple Data (SIMD) instructions that enable fast and
secure data encryption and decryption based on the Advanced Encryption Standard
(AES). AES-NI are valuable for a wide range of cryptographic applications; such as,
applications that perform bulk encryption/decryption, authentication, random number
generation, and authenticated encryption. AES is broadly accepted as the standard for
both government and industry applications, and is widely deployed in various protocols.
AES-NI consists of six Intel
AESENCLAST, AESDEC, and AESDELAST facilitate high performance AES encryption and
decryption. The other two, AESIMC and AESKEYGENASSIST, support the AES key
expansion procedure. Together, these instructions provide a full hardware for
supporting AES, offering security, high performance, and a great deal of flexibility.
3.6.1

PCLMULQDQ Instruction

The processor supports the carry-less multiplication instruction, PCLMULQDQ.
PCLMULQDQ is a Single Instruction Multiple Data (SIMD) instruction that computes the
128-bit carry-less multiplication of two, 64-bit operands without generating and
propagating carries. Carry-less multiplication is an essential processing component of
several cryptographic systems and standards. Hence, accelerating carry-less
multiplication can significantly contribute to achieving high speed secure computing
and communication.
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Advanced Vector Extensions (AVX)
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Streaming SIMD Extensions (SSE) from 128-bit vectors into
http://www.intel.com/software/avx
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SSE instructions. Four instructions, AESENC,
Technologies
Datasheet, Volume 1