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January 7th, 2008, 03:10 PM   #1
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cryptography

what is cryptograhy? transfering secret messages safe? what do u say? what do u know from cryptgraphy?
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January 8th, 2008, 06:05 AM   #2
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In general I'd say that properly-implemented crypto is quite safe. I'd worry more about side-channel attacks than anything.
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January 9th, 2008, 11:59 AM   #3
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Quote:
Originally Posted by CRGreathouse
In general I'd say that properly-implemented crypto is quite safe. I'd worry more about side-channel attacks than anything.
No system is completely safe. But in a fair look, we can name some systems safe. At least in a period of time.
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January 9th, 2008, 01:29 PM   #4
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One-time pad? Quantum entanglement methods?
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January 9th, 2008, 02:09 PM   #5
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One-time pad? Quantum entanglement methods?
Even caesar was safe [color=red]for a while[/color]. Can't be safe ECC then? Why not?
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January 9th, 2008, 07:09 PM   #6
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Cryptography is an subject used in computer science, also using some number theory, to find out the codes and stuff. Military uses this a lot.
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January 10th, 2008, 02:01 PM   #7
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...

Some probability, algebra, ...
Geraph theory can help too.
And in ECC u can find new things.
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January 10th, 2008, 02:03 PM   #8
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cryptography system

And now new question for continue. What is cryptography system?
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January 10th, 2008, 07:02 PM   #9
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Re: cryptography system

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And now new question for continue. What is cryptography system?
A computer that determines the codes for the cryptography?
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January 10th, 2008, 07:58 PM   #10
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Re: cryptography system

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Quote:
Originally Posted by prodo
And now new question for continue. What is cryptography system?
A computer that determines the codes for the cryptography?
I would say it is a system that "feeds" itself with the information gotten during the analysis of the ciphered text in order to break the code (more accurately, break the cipher).

You introduce the ciphered text, the system do the statistical inferences, deterministic analysis, etc, and use the gotten information to continue the analysis until it finds a meaningful result.

But I don't see exactly the importance of this.

To know more about cryptography and its history I strongly suggest this book: http://www.amazon.com/Code-Book-Science ... 0385495323

Its very cheap and its a truly piece of art !
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