Utility for encrypting/decrypting ST-Link firmware images.
It is mostly based on decompiled code, which is not human-readable (and probably never was in the first place).
Compiled archive can be found in dist folder.
Decrypt binary:
$ java -jar st_decrypt.jar --key "encryption key" -i firmware.bin -o firmware_decrypted.bin
Encrypt binary:
$ java -jar st_decrypt.jar --key "encryption key" -i firmware.bin -o firmware_encrypted.bin --encrypt