Apple Export Compliance when using Libsodium and SSL (HTTPS)

Question

Apple's explanation of the export compliance is rather difficult to understand and a complete mix of IT and Law-Knowledge making it difficult to connect to the correct people.

Our app uses:

• Libsodium (using a flutter library, so not apple-default-encryption but open source)
• Https/SSL/... which require no uploads to app store connect.

I couldn't find out if Libsodium is - is accepted by international standard bodies (such as IEEE, IETF, or ITU)

Other Stackoverflow-Questions ("duplicates") do either not contain explicit Open-Source-Software or are missing helpful answers.