sphinx-key

A Lightning Hardware Wallet based on Validating Lightning Signer

set CFLAGS

Before building the sphinx-key esp software, run this:

export CFLAGS=-fno-pic

find your esp GCC

Find the path to your riscv32-esp-elf-gcc binary within the .embuild dir:

export CC=$PWD/.embuild/espressif/tools/riscv32-esp-elf/esp-2021r2-patch3-8.4.0/riscv32-esp-elf/bin/riscv32-esp-elf-gcc

build test

cargo build --features pingpong

flash test

espflash target/riscv32imc-esp-espidf/debug/sphinx-key --monitor

build release

cargo build --release

flash release

esptool.py --chip esp32c3 elf2image target/riscv32imc-esp-espidf/release/sphinx-key

esptool.py --chip esp32c3 -p /dev/tty.usbserial-1420 -b 460800 --before=default_reset --after=hard_reset write_flash --flash_mode dio --flash_freq 40m --flash_size 4MB 0x10000 target/riscv32imc-esp-espidf/release/sphinx-key.bin

monitor

Find your port (ls /dev/tty.*)

PORT=/dev/tty.usbserial-1420

espmonitor $PORT

configure the hardware

make a seed: ./sphinx-key/newseed.sh

make a .env file like:

SSID={my_ssid}
PASS={my_wifi_password}
BROKER={my_ip}:1883
SEED={my_seed_hex}
NETWORK=regtest

connect to the sphinxkey network on your computer

cargo run --bin config

This will encrypt your seed and send to the hardware, along with your home wifi information and broker address

clear NVS storage

espflash target/riscv32imc-esp-espidf/debug/clear

espmonitor /dev/tty.usbserial-1420

dependencies

cargo nightly:

rustup install nightly

rustup component add rust-src --toolchain nightly

rustup default nightly

python 3.7 or higher is required

cargo sub-commands:

cargo install cargo-generate

cargo install ldproxy

cargo install espflash

cargo install espmonitor

cargo generate esp-rs

cargo generate --git https://github.com/esp-rs/esp-idf-template cargo

std support: true
v4.4
esp32c3
nightly

cargo build

espflash notes

espflash save-image esp32-c3 target/riscv32imc-esp-espidf/release/sphinx-key ./test-flash

espflash board-info

esptool.py --chip esp32c3 elf2image target/riscv32imc-esp-espidf/release/sphinx-key

esptool.py --chip esp32c3 -p /dev/tty.usbserial-1420 -b 460800 --before=default_reset --after=hard_reset write_flash --flash_mode dio --flash_freq 40m --flash_size 4MB 0x10000 target/riscv32imc-esp-espidf/release/sphinx-key.bin

espmonitor /dev/tty.usbserial-1420

for ESP-IDF#4.3.2: export CC=$PWD/.embuild/espressif/tools/riscv32-esp-elf/esp-2021r2-8.4.0/riscv32-esp-elf/bin/riscv32-esp-elf-gcc