Related-Cipher Attacks

@inproceedings{Wu2002RelatedCipherA,
  title={Related-Cipher Attacks},
  author={Hongjun Wu},
  booktitle={ICICS},
  year={2002}
}
We formally introduce the concept of related-cipher attack. In this paper, we consider the related ciphers as block ciphers with the same round function but with different round numbers. If their key schedules do not depend on the total round number, then related-cipher attack could be applied if the same key is used. We applied this attack to block cipher SQUARE and show that SQUARE is vulnerable to this attack. We also show that a new AES key schedule proposed at ACISP02 is weaker than the… CONTINUE READING

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