Intel CM8063701450500 Datasheet download pdf (Page 44)

Technologies

44 Datasheet, Volume 1

3.5 Intel

Advanced Vector Extensions (Intel

AVX)

Intel Advanced Vector Extensions (Intel AVX) is the latest expansion of the Intel

instruction set. It extends the Intel Streaming SIMD Extensions (Intel SSE) from 128-

bit vectors to 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 application areas.

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. In the processor, new instructions were added to allow

graphics, media and imaging applications to speed up the processing of large amount

of data by reducing the memory bandwidth and footprint. The new instructions convert

operands between single-precision floating point values and half-precision (16 bit)

floating point values.

For more information on Intel AVX, see http://www.intel.com/software/avx.

3.6 Security and Cryptography Technologies

3.6.1 Intel

Advanced Encryption Standard New Instructions

(Intel

AES-NI)

The processor supports Intel Advanced Encryption Standard New Instructions (Intel

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). Intel AES-NI are valuable for a wide range of cryptographic

applications, for example: 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 SSE instructions. Four instructions, namely AESENC,

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 support

AES, offering security, high performance, and a great deal of flexibility.

3.6.2 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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