Intel SHA extensions

Intel SHA Extensions are a set of extensions to the x86 instruction set architecture which support hardware acceleration of Secure Hash Algorithm (SHA) family. It was introduced in 2013. Instructions for SHA-512 will be introduced in Arrow Lake and Lunar Lake in 2024.

The original SSE-based extensions added four instructions supporting SHA-1 and three for SHA-256. AVX-based versions are also available with a V prefix.

• SHA-1: SHA1RNDS4, SHA1NEXTE, SHA1MSG1, SHA1MSG2
• SHA-256: SHA256RNDS2, SHA256MSG1, SHA256MSG2

The AVX-based extensions added three for SHA-512.

• VSHA512RNDS2, VSHA512MSG1, VSHA512MSG2

x86 architecture processors

Intel

The following Intel processors support the original SHA instruction set:

• Intel Goldmont (and later Atom microarchitectures) processors.^[1]
• Intel Ice Lake (and later) processors.^[2]
• Intel Rocket Lake (and later) processors.

The following Intel processors will support the newer SHA-512 instruction set:

• Intel Arrow Lake and Lunar Lake processors.

AMD

Several AMD processors support the original SHA instruction set:

• AMD Zen (and later) processors.^[3]

References

External links

• New Instructions Supporting the Secure Hash Algorithm on Intel® Architecture Processors
• Intel Instruction Set Architecture Extensions
• "Intel Architecture Instruction Set Extensions Programming Reference" (PDF). Archived from the original (PDF) on 2013-09-29., Chapter 8

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