Secure communications over insecure channels
Secure communications over insecure channels
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DOI：
10.1145/359460.359473
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发表时间：
1978-04
期刊：
影响因子：
--
通讯作者：
R. Merkle
中科院分区：
文献类型：
--
作者：
R. Merkle
根据传统的密码安全概念，在加密信息可以安全地发送之前，必须通过秘密手段传输密钥。本文表明，它是可能的，选择一个开放的通信信道中的一种方式，通信安全性可以保持一个关键。描述了一种方法，该方法迫使任何敌人花费大量的工作，该工作随着两个通信者选择密钥所需的工作的平方而增加。该方法提供了一种新的逻辑保护，防止被动窃听。这表明，对这一主题的进一步研究将是非常有益的，无论是在理论上和实践意义。
According to traditional conceptions of cryptographic security, it is necessary to transmit a key, by secret means, before encrypted massages can be sent securely. This paper shows that it is possible to select a key over open communications channels in such a fashion that communications security can be maintained. A method is described which forces any enemy to expend an amount of work which increases as the square of the work required of the two communicants to select the key. The method provides a logically new kind of protection against the passive eavesdropper. It suggests that further research on this topic will be highly rewarding, both in a theoretical and a practical sense.