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How can I attack a Triple-Block cipher with 2 keys (like 3DES) with a cost of ≤ 2⁵⁶
I am trying to solve something and I have but I have no idea anymore. Maybe anyone of you has an idea/solution/hint.
Given is a block cipher $F$ with key length $n$. It looks like this:
$$c = ENC_{k1}...
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2
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1
answer
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Triple DES with 2 keys
Suppose triple DES is performed by choosing two keys $K_1$ and $K_2$ and computing $C = T (T (T (L, K_1), K_2), K_2)$. How to attack this modified version with a meet-in-the-middle attack, in which ...
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1
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0
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Attacks on Full TripleDES [closed]
I have been reading about attacks and many of them work on specific rounds of TripleDES but not on full TripleDES. Is there any attack except brute force that works on full TripleDES? (theoretical)
- 597
6
votes
1
answer
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Has a Two Key TDES encryption ever been successfully attacked?
Is there any known instance of a Two Key TDES ever being successfully attacked (in real life), when the key is used to encrypt less than $2^{20}$ words?
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