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J.D.

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Answers (67)

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28	Reason why “XOR” is a linear operation, but ordinary “addition” isn’t?
21	Why is the permutation in AES (and other ciphers) not random or key-dependent?
19	Why does only length prepending improve the security of CBC-MAC
16	How exactly is “true randomness” defined in the realms of cryptography?
10	Why is the DES s-box non-linear? Why does it make the cracking of the cipher more difficult?

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10	Proof that IND$-CPA implies IND-CPA?
9	AES-CTR mode and the Biclique Attack

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83 algorithm-design × 11	37 cryptanalysis × 10
82 aes × 18	37 differential-analysis × 6
50 linear-cryptanalysis × 4	34 security-definition × 6
49 block-cipher × 14	32 cbc-mac × 4
48 s-boxes × 5	30 xor × 2

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