信息高速公路的保护神——蓬勃发展的现代民用密码学

• 作 者: 柯闻
• 出 处: 天津科技
• 发表日期: 1995年02期
• 关键词: 密码学 密码研究 保安措施 交通安全设施 公开密钥 商用密码 信息安全 商用网 美国国家标准局 通信网

如果在设计高速公路干线时忽略了交通安全设施,那么一旦发生交通事故其后果将是不堪设想的。在即将开始的信息高速公路建设过程中情况也十分类似。信息在错综复杂的通信网中越是以高速传输,那么相应的保安措施也就显得越重要,甚至变成不可缺少的关键部分。现代密码学则为民用信息安全提供了有效的手段。 密码术虽然十分古老,早在古罗马时代就倍受重视,但在1976年之前密码研究几乎仅限于军事和外交部门。1976年美国国家标准局颁布并在全美商用网中实施了一种名为DES(数据加密标准)的商用密码体制,几乎与此同时两位美国学者迪菲和赫尔曼发明了

If traffic safety facilities were ignored in the design of freeway trunks, the consequences would be unimaginable in the event of a traffic accident. The situation is also very similar in the upcoming information highway construction. The more information is transmitted at high speeds in a complex network, the more important the security measures become and even become an indispensable part. Modern cryptography provides an effective means for the safety of civil information. Cryptology, though ancient, took a long-term priority in Roman times, but until 1976 cryptography was almost exclusively military and diplomatic. In 1976, when the U.S. National Bureau of Standards issued and implemented a commercial cryptographic system called DES (Data Encryption Standard) in the U.S. Commercial Web, at the same time two American scholars, Diffie and Herman, invented