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wolfBoot/tools/keytools
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Daniele Lacamera 8cec76e106 F-14155: scrub the decoded key objects in sign.c cleanup 
The key/key2 structs in main() hold the decoded private key material
for the rest of the process lifetime, and free_key() only releases
what its dispatch knows about. Scrub both objects unconditionally in
cleanup so no key residue survives, for any algorithm.
 		2026-09-23 04:30:26 +02:00
..
otp F-6408: zeroize UDS from OTP keystore generator's heap and stack buffers 2026-07-02 14:56:48 +02:00
Makefile Clean up build flag usage, use trng healthtest in test-app 2026-07-31 14:33:56 +02:00
README.md Minor docs update, code review changes, script modifications. 2025-11-24 13:04:06 -08:00
keygen.c F-13624: guard keygen-emitted keystore accessors against negative id 2026-09-18 11:56:19 +02:00
sign.c F-14155: scrub the decoded key objects in sign.c cleanup 2026-09-23 04:30:26 +02:00
user_settings.h Continue the ML-DSA renaming 2026-05-19 11:21:20 -07:00
wolfBootKeyTools.sln
…
wolfBootKeygenTool.vcxproj Update wolfssl submodule to latest master 2026-05-18 23:02:54 -07:00
wolfBootSignTool.vcxproj Update wolfssl submodule to latest master 2026-05-18 23:02:54 -07:00

README.md

Key Tools for signing and key generation

Sign

See code file ./tools/keytools/sign.c and documentation in docs/Signing.md.

KeyGen and KeyStore

See code file ./tools/keytools/keygen.c and documentation docs/keystore.md.

Flash OTP Keystore Generation, Primer, Startup

See documentation docs/flash-OTP.md.

Keystore Generation

Pack public keys into a single binary (otp.bin) formatted the way wolfBoot expects for provisioning the device’s OTP/NVM keystore. No signing, no encryption—just a correctly laid-out image with a header plus fixed-size "slots" for each key.

See code file ./tools/keytools/otp/otp-keystore-gen.c

Flash OTP Primer

See code file ./tools/keytools/otp/otp-keystore-primer.c

Flash OTP Startup

See code file ./tools/keytools/otp/startup.c

Quick Start (Linux)

make wolfboot_signing_private_key.der SIGN=ED25519

# or

./tools/keytools/keygen --ed25519 -g wolfboot_signing_private_key.der

Note the above example is a basic case where a single key is generated. The tool supports multiple keys both with [-g privkey] and [-i pubkey] parameters.

See the local docs docs/keystore.md and the wolfBoot Keystore section of the manual for additional details.

Debugging and Development

DEBUG_SIGNTOOL

Enables additional diagnostic messages that may be useful during development and initial bring-up.

WOLFBOOT_SHOW_INCLUDE

Enables compile-time verbosity to indicate which user_settings.h file is being used.