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I am going through the paper https://www.iacr.org/archive/fse2013/84240283/84240283.pdf where the related key security of CBC mode of encryption is well analyzed. I am concerned about whether the CFB mode of encryption is related-key secure or not.

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  • $\begingroup$ That paper actually doesn't discuss CBC mode; rather, it discusses "Encrypted CBC mode"; see iacr.org/archive/eurocrypt2008/49650197/49650197.pdf for more details... $\endgroup$
    – poncho
    Commented Jun 17 at 18:10
  • $\begingroup$ Thanks! but this paper does not mention anything about related-key security $\endgroup$
    – Crypto_Lover
    Commented Jun 17 at 19:03

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