riscv-zknh

1.1.0Readiness: RL4 — Testable

by extensilica

SHA-256 / SHA-512 hash instruction subset

No known encoding conflicts

Pre-silicon bridge: this package is meant to be evaluable before RTL/FPGA/ASIC decisions.

Install

xsil install riscv-zknh

Run

xsil run riscv-zknh

Requires ISA RV64G_ZKNH

Details

Published

May 11, 2026

Latest

1.1.0

Standard

Ratified

RISC-V International

Provenance

Community port

Ported by a non-upstream community member. Useful, but not vetted as official.

ISA

RV64G_ZKNH

Readiness

Readiness: RL4 — Testable

ISAToolchain: bundledSim: SpikeTestsRepro: resolved

Toolchain

riscv-none-elf · v14.2.0

Targets

spike

{
  "spike": {
    "config": "sim/spike.yaml",
    "isa": "rv64gc_zknh",
    "mem": "256m",
    "priv": "msu",
    "status": "working"
  }
}

License

CC-BY-4.0

Cite

CFF and BibTeX for papers and Zenodo (v1.1.0).

CFF

cff-version: 1.2.0
type: software
title: riscv-zknh
version: 1.1.0
authors:
  - name: extensilica
abstract: SHA-256 / SHA-512 hash instruction subset
message: "If you use this software, please cite it using the metadata from this file."
license: CC-BY-4.0
repository-code: https://github.com/riscv/riscv-crypto
url: https://extensilica.com/package/riscv-zknh
date-released: 2026-06-07
identifiers:
  - type: url
    value: https://extensilica.com/package/riscv-zknh
  - type: url
    value: https://github.com/riscv/riscv-crypto

BibTeX

@software{riscv_zknh_1_1_0,
  title = {riscv-zknh},
  author = {extensilica},
  year = {2026},
  version = {1.1.0},
  url = {https://extensilica.com/package/riscv-zknh},
  license = {CC-BY-4.0},
  repository = {https://github.com/riscv/riscv-crypto},
}

Downloads

7 days

30 days

Maintainers

extensilica

Links

Repository

Implementation requests

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Readiness & capabilities

Readiness: RL4 — Testable

Runnable (entry declared)

Testable (testEntry declared)

Repro: bundled

Repro: resolved

Repro: host-dependent

Toolchain: bundled

Toolchain: external

Sim: Spike

Emu: QEMU

RTL

FPGA

Tests

README

SHA-256 / SHA-512 hash instruction subset

Version History

Version	Published	Size	Downloads	Status
1.1.0latest `xsil install [email protected]`	Jun 7, 2026	5.1 KB	1	active
1.0.0yanked Initial catalog-seed scaffold for riscv-zknh, derived from upstream 9cb9087. `xsil install [email protected]`	May 11, 2026	6.7 KB	5	yanked

Downloads

Last 7 days

Last 30 days

All time

Daily downloads — last 30 days

05-1405-2105-2806-0406-1106-12

By version

1.0.0

1.1.0

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