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On Thu, 25 Sep 2003 11:08:36 -0400, John Hairell wrote:
On Thu, 25 Sep 2003 13:51:14 +0000 (UTC), (Mike Andrews) wrote: In (rec.radio.amateur.homebrew), phil hunt wrote: Modern crypto is good enough to withstand all cryptanalytic attacks. [stuff snipped] I love it when people make blanket statements. There's a big building full of computer equipment over at Ft. Meade that's not sitting there just generating heat. Yes, it is processing non-encrypted signals traffic, mostly. I would be very surprised if modern symmetric and assymetric ciphers are prone to cryptanalitic attack. -- "It's easier to find people online who openly support the KKK than people who openly support the RIAA" -- comment on Wikipedia |
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On Sat, 27 Sep 2003 00:49:38 GMT, Tank Fixer wrote:
In article , says... There's a big building full of computer equipment over at Ft. Meade that's not sitting there just generating heat. Yes, it is processing non-encrypted signals traffic, mostly. Then why can't my brother-in-law who worked there for a bit while in the Navy not tell me what he did ? Look, if you have evidence that strong ciphers can be broken, show us it. -- "It's easier to find people online who openly support the KKK than people who openly support the RIAA" -- comment on Wikipedia |
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On Sun, 28 Sep 2003 05:28:35 GMT, Tank Fixer wrote:
In article , says... On Sat, 27 Sep 2003 00:49:38 GMT, Tank Fixer wrote: In article , says... There's a big building full of computer equipment over at Ft. Meade that's not sitting there just generating heat. Yes, it is processing non-encrypted signals traffic, mostly. Then why can't my brother-in-law who worked there for a bit while in the Navy not tell me what he did ? Look, if you have evidence that strong ciphers can be broken, show us it. You really think anyone would answer that on usnet ? IOW you are bull****ting. Thanks for admitting it. -- "It's easier to find people online who openly support the KKK than people who openly support the RIAA" -- comment on Wikipedia |
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On Sun, 28 Sep 2003 19:49:22 GMT, Tank Fixer wrote:
In article , says... On Sun, 28 Sep 2003 05:28:35 GMT, Tank Fixer wrote: In article , says... On Sat, 27 Sep 2003 00:49:38 GMT, Tank Fixer wrote: In article , says... There's a big building full of computer equipment over at Ft. Meade that's not sitting there just generating heat. Yes, it is processing non-encrypted signals traffic, mostly. Then why can't my brother-in-law who worked there for a bit while in the Navy not tell me what he did ? Look, if you have evidence that strong ciphers can be broken, show us it. You really think anyone would answer that on usnet ? IOW you are bull****ting. Thanks for admitting it. No, I was pointing out that even with my current clearance my brother-in- law could'nt tell me what he was doing for the NSA computers. Neither you nor I know if thay can or not. While it is impossible to know in detail everything about the NSA, some things can be known or reasonably surmised. 1. we know for certain that some encryption schemes are unbreakable. One-time pads, for example, or schemes where the ciphertext is smaller than the key. Of course, as will all symmetric ciphers, there's the key distribution problem, but in the context we were discussing -- a battlefield internet -- there is a secure channel to distribute keys, you can simply exchange data storage media around the battalion. (Sometimes, there is no secure channel, which is when public-key encryption gets useful). 2. we know for certain that some algorithms are computationally intractable, i.e. there's no way to run them faster. This followes from Turing's Halting Problem. It may be possible that in the future quantum computing will have some effect on some such problems; but that's entirely speculative. 3. we know for certain that ideas are often independently invented by multiple people in multiple places; we can therefore reasonably surmise that what the NSA knows now, others will know within a few years. 4. we know for certain that the US govmt is encouraging people to use AES in its civilian Internet infrastructure 5. we can reasonably surmise that the US govmt thinks that no potential adversary will be able to crack AES in the forseeable future. The largest potential adversary might be China, which has about 1/10th the resources of the USA, which is equivalent to adding 3 bits on a symmetric key, or waiting 5 years for computers to get faster. 6. From 3, 4, and 5, we can reasonably surmise that the NSA cannot currently crack AES. -- "It's easier to find people online who openly support the KKK than people who openly support the RIAA" -- comment on Wikipedia |
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On Mon, 29 Sep 2003 11:43:47 -0400, John Hairell wrote:
On Sat, 27 Sep 2003 17:30:33 +0100, (phil hunt) wrote: On Sat, 27 Sep 2003 00:49:38 GMT, Tank Fixer wrote: In article , says... There's a big building full of computer equipment over at Ft. Meade that's not sitting there just generating heat. Yes, it is processing non-encrypted signals traffic, mostly. Then why can't my brother-in-law who worked there for a bit while in the Navy not tell me what he did ? Look, if you have evidence that strong ciphers can be broken, show us it. You've got to be kidding - anybody who might know such a fact isn't going to be so stupid as to post it here. Yes, I know. That's why I said "evidence" not "knowledge". I have posted my reasons for believing strong ciphers are secure, and I note no-one has attempted to refute my argument. -- "It's easier to find people online who openly support the KKK than people who openly support the RIAA" -- comment on Wikipedia |
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