IBM 提交了一个候选算法，它是 IBM 内部开发的，名为 LUCIFER。在美国国家安全局 (NSA) 的“指导”下完成了算法评估之后，在 1977 年 7 月 15 日，NBS 采纳了 LUCIFER 算法的修正版作为新的数据加密标准.-IBM has submitted a candidate algorithm, which is IBM' s internal development, called LUCIFER. In the United States National Security Agency (NSA) to " guidance"　to complete the algorithm assessment, in July 15, 1977, NBS has adopted a modified version of LUCIFER algorithm as the new Data Encryption Standard.