【摘要】 DES是世界上使用最广泛的商用密码,在历经20多年的风雨历程之后终告被破译,商用密码再次面临新的抉择。更多还原

【Abstract】 DES,the world-wide used commercial encryption algorithm ,is at last cracked after 20 years’ trials and hardships ,and the commercial cryptography is again at the cross-road.更多还原