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数据加密是实现计算机网络中数据保密性的主要手段。本文分析了数据加密时的保密性能指标及与之有关的因素、实施标准化时付出的性能指标代价,分析介绍了美国国家标准局建议的标准数据加密算法DES以及它的四种使用方式,指出实现数据加密标准化的可能性、前提和代价,提出选用加密标准的参考建议。本文还提出了用多处理机和多处理支流破译密钥的思想,并给出了一个这种系统的逻辑结构。
Data encryption is the main means of achieving data confidentiality in computer networks. This paper analyzes the confidentiality of data encryption and its related factors, the performance of the standardization of the cost of implementation of the standard analysis of the United States National Bureau of Standards recommended standard data encryption algorithm DES and its four uses, pointed out that the realization Data encryption standardization possibilities, preconditions and costs, the proposed selection of encryption standards reference. In this paper, the idea of deciphering keys with multiprocessors and multiprocessing tributaries is also proposed, and a logical structure of such a system is given.