Function hactool_sys::mbedtls_cipher_update_ad

pub unsafe extern "C" fn mbedtls_cipher_update_ad(
    ctx: *mut mbedtls_cipher_context_t, 
    ad: *const c_uchar, 
    ad_len: usize
) -> c_int

\brief Add additional data (for AEAD ciphers). Currently only supported with GCM. Must be called exactly once, after mbedtls_cipher_reset().

\param ctx generic cipher context \param ad Additional data to use. \param ad_len Length of ad.

\return 0 on success, or a specific error code.