Supported Targets	ESP32-S2	ESP32-S3

ESP32 U2F Security Key.

Turns your cheap ESP32 U2F token.

Hardware Required

Any ESP board that have USB-OTG supported.

Flash Example

WARNING using erase_flash will lose all stored keys

# Erase first 1MB size
esptool erase_region 0x0 0x100000

Flash binaries:

esp32s2 bootloader address is 0x1000

esptool --chip esp32s2  write_flash --flash_mode dio --flash_size 2MB --flash_freq 80m 0x1000 bootloader/bootloader.bin 0x8000 partition_table/partition-table.bin 0x10000 esp32_u2f.bin

esp32s3 bootloader address is 0x0

esptool --chip esp32s3  write_flash --flash_mode dio --flash_size 2MB --flash_freq 80m 0x0 bootloader/bootloader.bin 0x8000 partition_table/partition-table.bin 0x10000 esp32_u2f.bin

Tools

espressif esptool

License

GNU General Public License v3.0