Part $3$: Entity Authentication and Access Control $(2$ Marks$)$

Theorie mitred for eriving we denis and conso ing cos sensive infernaion.

integrated into the cryptosystem.

Part $4$: Integration of Security Services $(2$ Marks$)$

$$ Plan the inclusion of additional security services such as message integrity checks and digital signatures.

$$ Explain how these services can be theoretically incorporated into the system to enhance