Add public key export to pico-hsm-tool.py #128

2026-02-07T18:01:43+08:00

krlnokrl commented

2026-02-07 18:01:43 +08:00

(Migrated from https://github.com/polhenarejos/pico-hsm)

Summary

Describe in plain language what this PR does and why.

Small functionality improvement to pico-hsm-tool
Add the functionality to export public keys to pico-hsm-tool.py
This exposes the function public_key() from pypicohsm/PicoHSM.py
Keys can be written to console or to file in PEM, DER and OpenSSH format.

Testing

Hardware / board(s) tested: picoHSM 6.4 - pi-pico2
Library version: pypicohsm version "2.0.2"
Exported keys tested: RSA, ED25519, EC:secp256r1, EC:secp512r1
Formats tested: PEM, DER, OpenSSH

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Anything else?

Optional: missing official mirror of pypicohsm and pypicokey libraries renders pico-hsm-tool hard to develop.

## Summary Describe in plain language what this PR does and why. - Small functionality improvement to pico-hsm-tool - Add the functionality to export public keys to pico-hsm-tool.py This exposes the function public_key() from pypicohsm/PicoHSM.py - Keys can be written to console or to file in PEM, DER and OpenSSH format. ## Testing - Hardware / board(s) tested: picoHSM 6.4 - pi-pico2 - Library version: pypicohsm version "2.0.2" - Exported keys tested: RSA, ED25519, EC:secp256r1, EC:secp512r1 - Formats tested: PEM, DER, OpenSSH ## Licensing confirmation (required) By checking the box below, you confirm ALL of the following: - You are the author of this contribution, or you have the right to contribute it. - You have read `CONTRIBUTING.md`. - You agree that this contribution may be merged, used, modified, and redistributed: - under the AGPLv3 Community Edition, **and** - under any proprietary / commercial / Enterprise editions of this project, now or in the future. - You understand that submitting this PR does not create any support obligation, SLA, or guarantee of merge. **I confirm the above licensing terms:** - [x] Yes, I agree ## Anything else? Optional: missing official mirror of pypicohsm and pypicokey libraries renders pico-hsm-tool hard to develop.

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Reference: dearsky/pico-hsm#128