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 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® Streaming SIMD Extensions (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.

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

http://www.intel.com/products/processor/manuals