10. Diffie- Hellman密钥交换 计算共享密钥 AB AB mod yAB mod p(which B can compute) yBA mod p(which A can compute KAB可以用于对称加密密钥10. Diffie-Hellman 密钥交换 ◼ 计算共享密钥: ◼ KAB = ax A .x B mod p ◼ = yA x B mod p (which B can compute) ◼ = yB x A mod p (which A can compute) ◼ KAB 可以用于对称加密密钥