fn hkdf_expand_label()

in src/key_exchange/tripledh.rs [504:516]

• 13 lines of code
• 1 McCabe index (conditional complexity)

fn hkdf_expand_label<D: Hash>(
    secret: &[u8],
    label: &[u8],
    context: &[u8],
) -> Result<Output<D>, ProtocolError>
where
    D::Core: ProxyHash,
    <D::Core as BlockSizeUser>::BlockSize: IsLess<U256>,
    Le<<D::Core as BlockSizeUser>::BlockSize, U256>: NonZero,
{
    let h = Hkdf::<D>::from_prk(secret).map_err(|_| InternalError::HkdfError)?;
    hkdf_expand_label_extracted(&h, label, context)
}