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History of cryptography and cryptanalysis. Questions that wish to ask about the history of cryptography should use this tag; if you're asking about historical ciphers you may also wish to use the classical-cipher tag.

55 votes

Have any cryptographic breaks been executed in the real world since World War II?

One example that immediately comes to mind is the attack on WEP, which is based on an unknown (to the designers at the time) related key attack on RC4 that lead to a key recovery. It needs to be a t …
poncho's user avatar
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8 votes

Examples of Weak Cryptography being exploited in the wild by cybercriminals?

I would also be interested in attacks against primitives that are known to be weak, provided they were against some notable company (where "notable" essentially means "something an average person may …
poncho's user avatar
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1 vote
Accepted

Cryptanalysis of the GOC

Looking through this, it would appear that key recovery with circa $O(2^{37})$ effort is possible (and state recovery with somewhat less effort). This is unlikely to be the most efficient approach, h …
poncho's user avatar
  • 151k