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fretty

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Re: Challenge

 On Sept. 23, 2013, 4:18 p.m.

Yes but there are already enough challenges on the site that use exactly the same encryption…nothing new is being tested here.

It is my opinion that this si…

Re: Challenge

 On Sept. 13, 2013, 6:19 p.m.

Personally I don't see the point in the Cyrillic part of this, it does nothing to add to the security of the encryption. This is essentially just another simpl…

Re: Challenge

 On Sept. 13, 2013, 6:13 p.m.

Thanks Nikita, feedback is definitely appreciated.

Re: Challenge Digital Signatures: DSA with Medium Fields

 On March 2, 2012, 6:24 p.m.

I am simply saying you can generate your own examples easily within minutes, there is no system at work here, it is just about calculation. Generate a prime, g…

Re: Challenge

 On March 2, 2012, 5:54 p.m.

Well a thing to be learned would be that in practice people look for the simplest solution. In creating an affine part to the challenge it has made the simples…

Re: Challenge Digital Signatures: DSA with Medium Fields

 On March 2, 2012, 5:46 p.m.

Can you not see that most of the slides are just there as a discussion around the problem and related stuff? (since the problem is highly unsolved).

The ch…

Re: Challenge

 On March 2, 2012, 5:29 p.m.

You misunderstand…what I am saying is why create a challenge about one cryptosystem that really isn't about that cryptosystem at all?

The challenge is suppo…

Re: Challenge Digital Signatures: DSA with Medium Fields

 On March 2, 2012, 1:24 p.m.

…but the challenge has nothing to do with DSA! The challenge is just to compute a discrete logarithm. There is no cryptographical system to break here, it is a…

Re: Challenge

 On March 2, 2012, 1:08 p.m.

Yes, I have no problem with making beginner challenges…just thought it defeated the point on making a challenge in ECC if really the ECC part is irrelevant.

Re: Challenge Digital Signatures: DSA with Medium Fields

 On Feb. 29, 2012, 12:02 a.m.

I think this is the point, it is a problem that hasn't yet been solved fully. The DLP is not a system…it is not really cryptographical! It is merely a bit of n…

Re: Challenge

 On Feb. 28, 2012, 11:52 p.m.

This challenge can be done without even touching elliptic curves! It is just yet another affine substitution that can be broken by hand in a few mins.

It co…

Re: Challenge

 On Feb. 7, 2012, 11:24 p.m.

I have never really considered a problem like this before so I might have got confused. I don't see a way to find d' without using its relationship with d…and …

Re: Challenge

 On Feb. 7, 2012, 10:29 p.m.

I have returned lol.

I think this challenge is ambiguous…it doesn't say how we have to approximate. Do we match up the left most 510 bits of d or the right …

Re: Challenge

 On Dec. 6, 2011, 1:57 p.m.

I did it by hand in about 5 mins…just do a manual check.

Re: Challenge "CMEA 1"

 On Nov. 9, 2011, 11:51 a.m.

You are following the chosen plaintext attack.


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