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23 Comments
- KenYN, on 10/12/2007, -0/+12This article is stolen from Wikipedia:
http://en.wikipedia.org/wiki/Data_Encryption_Standard
As is much of the rest of the content of his blog. Dugg down as SPAM. - inactive, on 10/12/2007, -0/+7annotated or not it's plagerism copy an article with only minor changes and not list the source. You can easily remedy it by noting that the bulk of the article is from Wikipedia, I doubt anyone going to make a big deal out of it but it's still a good idea to give credit where credit is due.
http://en.wikipedia.org/wiki/Wikipedia:Copyrights#Reusers.27_rights_and_obligations - pseudojd, on 10/12/2007, -0/+5BS, I Personally have been inside many a Diebold ATM while employed at Diebold. It's enabled and used. Cause when it stops working I had to go fix that *****. If you do not believe me look at one of my first posts. When diebold sent me a letter telling they lost a laptop with all the company info on it. All I got was a stinkin letter.
- ardellin, on 10/12/2007, -0/+4worse than just gaming, at least in this example. he just copies most, if not all of his article from wikipedia.
- signal15, on 10/12/2007, -1/+5No, it's not. The functionality is there but it's not turned on. The banks have not yet enabled it because the rules regarding it have not gone into effect yet. I know because I worked for a company that did ATM's with US Bank and a couple of other large banks. The banks are the ones that don't support it yet.
- nepawoods, on 10/12/2007, -0/+4@ Aziodotorg
A parenthetical remark at the end of one sentence in the middle of one paragraph does not make at all clear that the bulk of the article was lifted from elsewhere. - pseudojd, on 10/12/2007, -0/+4The keypad on the Diebold ATM you use uses 3DES encryption to encrypt the sequence you type before it even leaves the keypad. Then it is checked against the the key your bank has.
- signal15, on 10/12/2007, -0/+3Maybe some banks have it turned on, but I know for a fact that at least 2 major banks are not using it. I too have been inside a Diebold machine running OS2 Warp, and my friend who is a Diebold engineer just confirmed with me over IM that not all banks are using it.
- signal15, on 10/12/2007, -0/+3That article sucks. They really fail to mention exactly how it works, or even the history of it. It was developed by IBM in 1972, and the original name of it was Lucifer. Before the government would certify it as the DES standard, the NSA told IBM they needed to make a specific change in the way the S-boxes worked but would not say why. Because of this, everyone thought the NSA had a backdoor into DES.
It turns out that in 1992 someone in the private sector discovered differential cryptography. This discovery would have rendered DES useless if it had not had this change that was requested by the NSA 20 years earlier. If they were 20 years ahead then, imagine what they have going on now.
AES is safe now, at least for most of us. But who knows what's going on over there at Ft. Meade. They could have the first useful quantum computer, which would crack ANY conventional crypto immediately. - exobyte, on 10/12/2007, -0/+2I would have dugg this 10 years ago. For those who what encryption that isn't broken, look up AES.
- diafel, on 10/12/2007, -0/+3You know, I was absolutely incredulous at how an article like this could make the front page, until I realized, obviously this guy is gaming. Notice the voters in two of this guys submissions http://digg.com/space/Expect_a_warmer_wetter_world_this_century_computer_models_agree/who
http://digg.com/space/PlanetFinding_by_Numbers/who
Yawn. - ardellin, on 10/12/2007, -0/+3Uh, good point Signal. You could say that about any encryption algorithm...
- dziban303, on 10/12/2007, -1/+3Yeah. What he said.
- signal15, on 10/12/2007, -0/+2How do you know it hasn't been broken? Anyone who broke AES would have a lot to gain from actually using that knowledge, or selling that knowledge.
- Aziodotorg, on 10/12/2007, -2/+3Hey Saqlib,
Thanks for your response on my blog, I thought I'd reply here and on my blog, Indeed you are correct. I think that what you mean is that the 3TDES has a much likelier chance of collision or success from linear cryptanalysis , and could, in the right circumstances be as insecure as DES, perhaps?
I would add these details to my blog but I think they stand out quite well in your comment!
Best Wishes,
Azio - NCSUGavin, on 10/12/2007, -0/+1"DES is now Insecure" DES was insecure when I learned it in college almost a year ago! NO DIGG!
- zerocomm, on 10/12/2007, -0/+1If you want to read a good book concerning crypto, Read applied cryptography. Better than wikipedia for a source
- unforgiven2, on 10/12/2007, -6/+7very good. but why does 3TDES (3 Distinct Keys) has a effective key-length of 112-bit ???
Understanding this is important to understanding why even 3TDES is considered insecure, theoretically
Here is the explanation.
----------------
So, triple DES involves three keys, K1, K2, K3. Write single-DES encryption with a key K and plaintext block x as E(K, x), and decryption as D(K, x). Triple DES encryption is E(K3, D(K2, E(K1, x))).
Suppose you're given a plaintext block x and corresponding ciphertext y. For each possible K3, compute D(K3, y), and store the result in a table. This takes about 2^56 work, and uses 2^56 blocks of memory.
Now, for each pair K1, K2, compute D(K2, E(K1, x)). If this matches one of the values in the table, find the corresponding K3, and test the whole key against some other plaintext/ciphertext pairs. Continue until you're done. This step takes no extra memory and requires 2^112 time.
--------------------
saqib
http://www.full-disk-encryption.net - dilchill, on 10/12/2007, -1/+2why not just dig the wikipedia page...it would be way more informative, and that's where the article is from anyway...
- berland, on 10/12/2007, -0/+1Not only did the author plagiarize this article from Wikipedia, he didn't even do it well! Notice the repeated paragraph about cryptanalysis. Man, gotta bury this crap.
- hydoskee, on 10/12/2007, -0/+0Wikipedia is actually an incredible resource for a cryptography student. In my crypto class, wikipedia helped me implement RC4, DES, 3DES, and a PRNG, all with very very clearly explained algorithms.
- blurrie, on 10/12/2007, -3/+0what is des?
des is my initials.
i demand royalties. - Aziodotorg, on 10/12/2007, -5/+0Hi, I believe I have annotated wikipedia for this article.. have I not?
Des is now insecure for most applications. This is due to the 56-bit key size being too small. DES keys have been broken in less than 24 hours. There are also some results which demonstrate theoretical weaknesses in the cipher itself, although they have not been demonstarted to work in any way (source wikipedia)*
Best Wishes,
Azio
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