I guess it depends on the algorithm they chose, HChaCha20 is the symmetric encryption algorithm for libsodium.js which is quantum resistant. https://doc.libsod

I guess it depends on the algorithm they chose, HChaCha20 is the symmetric encryption algorithm for libsodium.js which is quantum resistant. https://doc.libsodium.org/secret-key_cryptography/secretstream#algorithm https://doc.libsodium.org/secret-key_cryptography/secretstre... https://crypto.stackexchange.com/questions/79518/is-xchacha20-poly1305-quantum-resistant https://crypto.stackexchange.com/questions/79518/is-xchacha2...