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Jan
25
comment Designing a key expander out of ciphers
If cipher_1 is just xor, all the k primes will be exactly k. Or am I missing something?
Jan
24
awarded  Scholar
Jan
24
accepted Can nesting different ciphers with different keys ever decrease security?
Jan
24
comment Can nesting different ciphers with different keys ever decrease security?
The only surprising result there is the elegance of the sketch. -- OTOH the 2nd result leads to the question of if there are any common ciphers that have more than one unrelated round function and/or a non-regular round structure. (I'm sure if I knew the right terms I could answer that myself but I have no idea what to Google for. :)
Jan
24
awarded  Student
Jan
24
asked Can nesting different ciphers with different keys ever decrease security?