Seeking a module to support file verification with public key on esp32

[brendancolevalley]

I am converting a program from python to run in micropython so we can leverage the esp32 s3. Part of the program requires downloading and validation of a small file using a public key. I am not particular about the encryption algorithm used, so long as its basically secure, can be signed in python and then validated in micropython in a few seconds. I found the ucrypto module, however this seems to require me to build the firmware, which I would prefer not to do as I am using a customized firmware already, and I am not experienced with the build process. There is the built in ucryptolib module, but this seems to only support aes right now, which is symmetric, it does not seem to have public / private key support. Are there any solutions that are compatible with micropython/ esp32? Thanks!