Struct crypto_api_chachapoly::XChachaPoly

pub struct XChachaPoly;

An implementation of XChaChaPoly

Implementations

impl XChachaPoly

pub fn cipher() -> Box<dyn Cipher>

Creates a Cipher instance with XChachaPolyIetf as underlying cipher

pub fn aead_cipher() -> Box<dyn AeadCipher>

Creates a AeadCipher instance with XChachaPolyIetf as underlying AEAD cipher

Trait Implementations

impl AeadCipher for XChachaPoly

fn seal(
    &self,
    buf: &mut [u8],
    plaintext_len: usize,
    ad: &[u8],
    key: &[u8],
    nonce: &[u8]
) -> Result<usize, Box<dyn Error + 'static>>

AEAD-seals plaintext_len bytes in-place in buf together with ad using key and nonce and returns the ciphertext length

fn seal_to(
    &self,
    buf: &mut [u8],
    plaintext: &[u8],
    ad: &[u8],
    key: &[u8],
    nonce: &[u8]
) -> Result<usize, Box<dyn Error + 'static>>

AEAD-seals plaintext into buf together with ad using key and nonce and returns the ciphertext length

fn open(
    &self,
    buf: &mut [u8],
    ciphertext_len: usize,
    ad: &[u8],
    key: &[u8],
    nonce: &[u8]
) -> Result<usize, Box<dyn Error + 'static>>

AEAD-opens ciphertext_len bytes in-place in buf together with ad using key and nonce and returns the plaintext length

fn open_to(
    &self,
    buf: &mut [u8],
    ciphertext: &[u8],
    ad: &[u8],
    key: &[u8],
    nonce: &[u8]
) -> Result<usize, Box<dyn Error + 'static>>

AEAD-opens ciphertext into buf together with ad using key and nonce and returns the plaintext length

impl Cipher for XChachaPoly

fn info(&self) -> CipherInfo

Returns information about the cipher

fn encrypted_len_max(&self, plaintext_len: usize) -> usize

Predicts the maximum encrypted length for plaintext_len bytes

fn encrypt(
    &self,
    buf: &mut [u8],
    plaintext_len: usize,
    key: &[u8],
    nonce: &[u8]
) -> Result<usize, Box<dyn Error + 'static>>

Encrypts plaintext_len bytes in-place in buf using key and nonce and returns the ciphertext length

fn encrypt_to(
    &self,
    buf: &mut [u8],
    plaintext: &[u8],
    key: &[u8],
    nonce: &[u8]
) -> Result<usize, Box<dyn Error + 'static>>

Encrypts plaintext into buf using key and nonce and returns the ciphertext length

fn decrypt(
    &self,
    buf: &mut [u8],
    ciphertext_len: usize,
    key: &[u8],
    nonce: &[u8]
) -> Result<usize, Box<dyn Error + 'static>>

Decrypts ciphertext_len bytes in-place in buf using key and nonce and returns the plaintext length

fn decrypt_to(
    &self,
    buf: &mut [u8],
    ciphertext: &[u8],
    key: &[u8],
    nonce: &[u8]
) -> Result<usize, Box<dyn Error + 'static>>

Decrypts ciphertext into buf using key and nonce and returns the plaintext length

impl SecKeyGen for XChachaPoly

fn new_sec_key(
    &self,
    buf: &mut [u8],
    rng: &mut dyn SecureRng
) -> Result<usize, Box<dyn Error + 'static>>

Generates a new key into buf using rng and returns the length of the secret key