how to share key for stream encryption?

I'm looking libsodium documents to think about how to encrypt stream. And found a good example like below. https://libsodium.gitbook.io/doc/secret-key_cryptography/secretstream

If I have encryption and decryption function running on different system, what is best idea to share the key which is using encrypt()/decrypt() functions in the example above?

https://stackoverflow.com/questions/66147393/how-to-share-key-for-stream-encryption February 11, 2021 at 09:05AM