January 7th, 2008, 03:10 PM  #1 
Newbie Joined: Jan 2008 From: Iran Posts: 16 Thanks: 0  cryptography
what is cryptograhy? transfering secret messages safe? what do u say? what do u know from cryptgraphy?

January 8th, 2008, 06:05 AM  #2 
Global Moderator Joined: Nov 2006 From: UTC 5 Posts: 16,046 Thanks: 938 Math Focus: Number theory, computational mathematics, combinatorics, FOM, symbolic logic, TCS, algorithms 
In general I'd say that properlyimplemented crypto is quite safe. I'd worry more about sidechannel attacks than anything.

January 9th, 2008, 11:59 AM  #3  
Newbie Joined: Jan 2008 From: Iran Posts: 16 Thanks: 0  Quote:
 
January 9th, 2008, 01:29 PM  #4 
Global Moderator Joined: Nov 2006 From: UTC 5 Posts: 16,046 Thanks: 938 Math Focus: Number theory, computational mathematics, combinatorics, FOM, symbolic logic, TCS, algorithms 
Onetime pad? Quantum entanglement methods?

January 9th, 2008, 02:09 PM  #5  
Newbie Joined: Jan 2008 From: Iran Posts: 16 Thanks: 0  Quote:
 
January 9th, 2008, 07:09 PM  #6 
Senior Member Joined: Apr 2007 Posts: 2,140 Thanks: 0 
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.

January 10th, 2008, 02:01 PM  #7 
Newbie Joined: Jan 2008 From: Iran Posts: 16 Thanks: 0  ...
Some probability, algebra, ... Geraph theory can help too. And in ECC u can find new things. 
January 10th, 2008, 02:03 PM  #8 
Newbie Joined: Jan 2008 From: Iran Posts: 16 Thanks: 0  cryptography system
And now new question for continue. What is cryptography system?

January 10th, 2008, 07:02 PM  #9  
Senior Member Joined: Apr 2007 Posts: 2,140 Thanks: 0  Re: cryptography system Quote:
 
January 10th, 2008, 07:58 PM  #10  
Senior Member Joined: Dec 2007 Posts: 687 Thanks: 47  Re: cryptography system Quote:
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/CodeBookScience ... 0385495323 Its very cheap and its a truly piece of art !  

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