Struct XChaCha20Poly1305Cipher 

pub struct XChaCha20Poly1305Cipher;

The production cipher: XChaCha20-Poly1305.

The 192-bit extended nonce is what makes the derived — rather than random — nonce of crate::crypto::expand safe: the space is far too large for the birthday bound to matter.

Implementations

impl XChaCha20Poly1305Cipher

pub fn new() -> Self

Builds the cipher. It is stateless; the key arrives per call.

Trait Implementations

impl AEADCipher for XChaCha20Poly1305Cipher

fn encrypt( &self, key: &[u8; 32], nonce: &[u8; 24], plaintext: &[u8], aad: &[u8], ) -> Result<Zeroizing<Vec<u8>>, AEADError>

Encrypts plaintext under key and nonce, binding aad to the tag.

fn decrypt( &self, key: &[u8; 32], nonce: &[u8; 24], ciphertext: &[u8], aad: &[u8], ) -> Result<Zeroizing<Vec<u8>>, AEADError>

Decrypts and authenticates ciphertext, which must carry its trailing tag and must have been produced with the same aad.

impl Clone for XChaCha20Poly1305Cipher

fn clone(&self) -> XChaCha20Poly1305Cipher

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for XChaCha20Poly1305Cipher

impl Debug for XChaCha20Poly1305Cipher

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for XChaCha20Poly1305Cipher

fn default() -> XChaCha20Poly1305Cipher

Returns the “default value” for a type.