12th Generation Intel® Core™ Processors

Datasheet, Volume 1 of 2

ID 655258
Date 05/25/2022

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Intel® Advanced Encryption Standard New Instructions

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 is 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 industrial applications and is widely deployed in various protocols.

Intel® AES-NI consists of six Intel® SSE instructions. Four instructions, 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 full hardware for supporting AES; offering security, high performance, and a great deal of flexibility.

This generation of the processor has increased the performance of the Intel® AES-NI significantly compared to previous products.

The Intel® AES-NI specifications and functional descriptions are included in the Intel® 64 Architectures Software Developer’s Manual, Volume 2. Available at:


Note:Intel® AES-NI Technology may not be available on all SKUs.