---
# System prepended metadata

title: 'LAB 5: Nhập môn mạng máy tính'

---

Round 1: $L, R \Rightarrow R \ || \ (f(R) \oplus L)$

Round 2: $R, (f(R) \oplus L) \Rightarrow (f(R) \oplus L) \ || \ (f(f(R) \oplus L) \oplus R)$

Round 3: $(f(R) \oplus L), (f(f(R) \oplus L) \oplus R) \Rightarrow (f(f(R) \oplus L) \oplus R) \ || \ f(f(f(R) \oplus L) \oplus R) \oplus (f(R) \oplus L)$

$X = f(R) \oplus L$
$Y = f(X) \oplus R = f(f(R) \oplus L) \oplus R$

$\Rightarrow (f(X) \oplus R) \ || \ f(f(X) \oplus R) \oplus X$
$\Rightarrow Y \ || \ f(Y) \oplus X$
