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96-bit Nonces Too Small? Try XChaCha20 and Rust

With symmetric-key, Bob and Alice have the same key. Rust can use the XChaCha20 method, and which supports stream encryption (and which does not require padding as a block cipher does, and is also faster than block cipher modes). ChaCha20 was created by Daniel J. Bernstein and has an eight-byte or 16-byte nonce. XChaCha20 (eXtended-nonce ChaCha) is an update to ChaCha20, and uses a 24 byte (192-bit) nonce…