rustls::tls13::key_schedule

Function hkdf_expand_label

Source 
pub(crate) fn hkdf_expand_label<T: From<[u8; N]>, const N: usize>(
    expander: &dyn HkdfExpander,
    label: &[u8],
    context: &[u8],
) -> T
Expand description

HKDF-Expand-Label where the output length is a compile-time constant, and therefore it is infallible.