mkdir keys openssl genpkey -algorithm RSA -out keys/dev.key -pkeyopt rsa_keygen_bits:2048 openssl rsa -in keys/dev.key -pubout -out keys/dev_pub.key
The official U‑Boot documentation provides detailed examples for the BeagleBone Black and other reference boards, and the same principles apply to the BR23 platform once the chip’s memory map is known.
, which are common in low-cost consumer electronics like wireless speakers, earbuds, and FM transmitters. Technical Overview