国际数据加密算法(英语:International Data Encryption Algorithm,缩写为 IDEA),最早称为改良建议加密标准(Improved Proposed Encryption Standard,IPES),是密码学上一种对称密钥分组密码,由James Massey与来学嘉设计,在1991年首次提出。这个算法的提出,是为了取代旧有的数据加密标准(DES)。[2]现在IDEA被认为是不安全的加密算法。
概述 | |
---|---|
设计者 | 来学嘉和James Massey |
派生自 | PES |
继承算法 | MMB, MESH, Akelarre, IDEA NXT (FOX) |
密码细节 | |
密钥长度 | 128 bits |
分组长度 | 64 bits |
结构 | Lai-Massey scheme |
重复回数 | 8.5 |
最佳公开破解 | |
The key can be recovered with a computational complexity of 2126.1 using narrow bicliques. This attack is computationally faster than a full brute force attack, though not, as of 2013, computationally feasible.[1] |
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