pub unsafe fn sha512sum1(rs1: u64) -> u64🔬This is a nightly-only experimental API. (
riscv_ext_intrinsics #114544)Available on RISC-V RV64 and target feature
zknh only.Expand description
Implements the Sum1 transformation function as used in the SHA2-512 hash function [49] (Section 4.1.3).
This instruction is supported for the RV64 base architecture. It implements the Sum1 transform of the SHA2-512 hash function. [49]. This instruction must always be implemented such that its execution latency does not depend on the data being operated on.
Source: RISC-V Cryptography Extensions Volume I: Scalar & Entropy Source Instructions
Version: v1.0.1
Section: 3.40
§Safety
This function is safe to use if the zknh target feature is present.