Struct XChaCha20Poly1305 

pub struct XChaCha20Poly1305;

XChaCha20-Poly1305 AEAD with 24-byte nonce.

Same shape as ChaCha20Poly1305: a unit struct with associated encrypt / decrypt functions. The only difference is the 24-byte nonce.

Implementations

impl XChaCha20Poly1305

pub fn encrypt( key: &[u8; 32], nonce: &[u8; 24], aad: &[u8], plaintext: &[u8], ) -> (Vec<u8>, [u8; 16])

Encrypt and authenticate a message.

Returns (ciphertext, tag) where ciphertext.len() == plaintext.len() and tag is exactly 16 bytes.

pub fn decrypt( key: &[u8; 32], nonce: &[u8; 24], aad: &[u8], ciphertext: &[u8], tag: &[u8; 16], ) -> Option<Vec<u8>>

Decrypt and verify a ciphertext. Returns None on tag mismatch.