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Jul
18
awarded  Citizen Patrol
Jun
26
comment How can I do a brute force (ciphertext only) attack on an CBC-encrypted message?
Great, I expected such an answer, I just wanted to clarify ;-) But I'm more interested in that "double encryption" scenario. In my understanding, it's impossible to know we got the right "first key" in a brute force attack if the plaintext was encrypted twice (with different ciphers and keys). The brute force attack should perform the two decryptions (with two keys) and then evaluate if it found the plaintext. Am I right ?
Jun
26
comment How can I do a brute force (ciphertext only) attack on an CBC-encrypted message?
­@Ilmari Karonen Ok, now what if the "plaintext" is not actually text, but a file of unknown type (image, music, etc.) or even an other ciphertext (using an other cipher for instance), it would be indistinguishable from random noise, so impossible to guess it's the "plaintext" we've got ?
Apr
25
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Dec
15
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