[Backport ncs-v3.4-branch] [nrf noup] zephyr: imgtool: sim: support multiple keys - #729
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[Backport ncs-v3.4-branch] [nrf noup] zephyr: imgtool: sim: support multiple keys#729NordicBuilder wants to merge 2 commits into
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zephyr: support multiple signing keys CONFIG_BOOT_SIGNATURE_KEY_FILE accepts a comma-separated list of PEMs. The first entry may be a keypair or public-only PEM — only the public bytes are ever embedded in the bootloader binary; subsequent entries must be public-only and are validated at CMake configure time. This enables the prod/dev custody model: a development bootloader can boot both production-signed and development-signed images, while production bootloaders embed only the production public key. imgtool: add --name-suffix to getpub and getpubhash Emits suffixed C/Rust symbol names so more than one key of the same signature type can be embedded without collisions. imgtool: add keyinfo subcommand Reports whether a PEM is a keypair (private) or public-only. Used by the Zephyr build to enforce that verification-only entries past the first are public-only PEMs. sim: tests for multiple ed25519 keys Add the sig-second-key feature and multi_key test scenarios covering single-key and dual-key builds. Documentation updated in docs/readme-zephyr.md, docs/signed_images.md, and docs/imgtool.md. Closes #2700. Signed-off-by: JP Hutchins <jp@intercreate.io> NCS adaptation notes: - Simulator changes excluded (not applicable to sdk-mcuboot). - CMakeLists.txt: NCS-specific key resolution (CONF_FILE scanning and KEY_FILE global property) preserved for the primary key; additional keys use CONF_DIR (same source as primary key) rather than APPLICATION_CONFIG_DIR for relative path resolution. zephyr_library_sources() used instead of target_sources() to match existing NCS conventions. MCUBOOT_SIGN_KEY_COUNT=1 set in else() branch to cover KMU, ITS, builtin-key, and any other no-key-file configurations. - Kconfig: BOOT_BUILTIN_KEY replaced with BOOT_SIGNATURE_USING_KMU and NCS_BOOT_SIGNATURE_USING_ITS in the mutually-exclusive list; help text updated to reflect NCS CONF_FILE-based path resolution behaviour. - imgtool: keyinfo uses hasattr(key_obj, "private_bytes") on the underlying cryptography key object to detect private keys, replacing keys.PayloadSigner/DigestSigner (absent in NCS) and keys.PrivateBytesMixin (which Ed25519 does not inherit in this fork). (cherry picked from commit 5497c95f1c8cde55a2d0da0db96e53fad77b8c8d) Signed-off-by: Markus Lassila <markus.lassila@nordicsemi.no> (cherry picked from commit 9182123)
…91 only Scope the comma separated BOOT_SIGNATURE_KEY_FILE to only 91 series devices in NCS 3.4. Signed-off-by: Markus Lassila <markus.lassila@nordicsemi.no>
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Automatically created by action-manifest-pr GH action from PR: nrfconnect/sdk-mcuboot#729 Signed-off-by: Nordic Builder <pylon@nordicsemi.no>
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Backport 9182123 from #722.