Function mbedtls_sys::chacha20_crypt

pub unsafe extern "C" fn chacha20_crypt(
    key: *const c_uchar, 
    nonce: *const c_uchar, 
    counter: u32, 
    size: size_t, 
    input: *const c_uchar, 
    output: *mut c_uchar
) -> c_int