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。

Quick Facts 概述, 设计者 ...
IDEA
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An encryption round of IDEA
概述
设计者来学嘉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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