(Official C/C development engineer QQ group (1090119), please enter your ID for verification. The files include IDEA's encryption and decryption algorithms, c files and fulfillment files. IDEA is the abbreviation of International Data Encryption Algorithm, which is a proposed standard algorithm called PES (Proposed Encryption Standard) proposed by X.J. Lai and Massey of the Swiss Federal Institute of Technology in 1990. It was improved by Lai and Massey in 1992 to strengthen the ability to resist differential analysis and was renamed IDEA. It is also a block encryption algorithm for encrypting data blocks of 64bit size. The key length is 128 bits. It is based on "mixed operations on dissimilar algebraic groups" Design thinking algorithms are simple to implement in hardware and software and much faster than DES in implementation. IDEA has gone through a lot of scrutiny since its inception, has strong resistance to cryptanalysis, and is used in a variety of commercial products.
IDEA\IDEA.cpp
IDEA\IDEA.exe
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