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给出了迭代分组密码SAFER +的一个变形算法SAFER +M ,改变了轮函数中的线性层 ,从而获得加解密钥相似性 .分析表明SAFER +M的简洁性和安全性均不弱于SAFER + .
A modified algorithm SAFER + M for iterating block cipher SAFER + is given, which changes the linear layer in the round function to obtain the similarities between the encryption and decryption keys. The analysis shows that the simplicity and security of SAFER + M are not weaker than SAFER +.