Function dtls_hmac_update 

pub unsafe extern "C" fn dtls_hmac_update(
    ctx: *mut dtls_hmac_context_t,
    input: *const c_uchar,
    ilen: usize,
)

Updates the HMAC context with data from \p input.

\param ctx The HMAC context. \param input The input data. \param ilen Size of \p input.