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Support codesigning in the firmware updater

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This commit provides a method to verify that firmware has been signed with a private key given its public key. The implementation uses ed25519-dalek as the signature verifier. An "ed25519" feature is required to enable the functionality. When disabled (the default), calling the firmware updater's verify method will return a failure.
This commit is contained in:
huntc
2023-01-06 22:21:39 +11:00
parent dbf7493708
commit b0529bc943
5 changed files with 382 additions and 18 deletions
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examples/boot/application/nrf/README.md
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@ -22,7 +22,7 @@ cp memory-bl.x ../../bootloader/nrf/memory.x
# Flash bootloader
cargo flash --manifest-path ../../bootloader/nrf/Cargo.toml --features embassy-nrf/nrf52840 --target thumbv7em-none-eabi --release --chip nRF52840_xxAA
# Build 'b'
cargo build --release --bin b
cargo build --release --bin b --features embassy-nrf/nrf52840
# Generate binary for 'b'
cargo objcopy --release --bin b --features embassy-nrf/nrf52840 --target thumbv7em-none-eabi -- -O binary b.bin
```