Comments by HitsugayaHisagi

HitsugayaHisagi 13-Mar-16 4:22am View

yes i just realise that. it didn't post just now due to connection error, so i'm now trying to delete it..sorry!

HitsugayaHisagi 13-Mar-16 4:15am View

yes i initiated that way with
RSACryptoServiceProvider rsa = new RSACryptoServiceProvider(2048)
and yes that is the same link i referred to, but still thanks for the suggestion.
And no i only posted the Qs here in this forum. Not sure what is happening, hmm...

HitsugayaHisagi 28-Feb-16 2:33am View

yes it worked!! thank you so much!!

HitsugayaHisagi 23-Feb-16 8:56am View

tried a few, and this
StringBuilder sb = new StringBuilder();
foreach (BigInteger item in encrypted)
{
sb.Append(encrypted.ToString());
}
is the only one that gives me output, but it printed the method name for 5 times (for 5 character in plaintext). I'm really getting very confused now. What should I do?

HitsugayaHisagi 21-Feb-16 10:00am View

have tried many ways like in the above, but still cant get it, what should I do? (sorry for late replying, not sure why for 4 days cant post any comments)

HitsugayaHisagi 21-Feb-16 9:59am View

I would prefer a continuous string of numbers, and have tried various ways as in above, but I still cant get it. What should I do?

HitsugayaHisagi 17-Feb-16 9:03am View

May I know what should I do? Like converting array into string? or print as array? I tried both, but with invalid argument.

HitsugayaHisagi 13-Feb-16 12:54pm View

I did use the debugger and see how it goes though. It did enter into the CheckIfDivisible method, together with both the generated prime numbers. But because it did not fulfill the condition so it return false and the whole process repeated till like an infinite loop. That's what I understand from how the code moves.

HitsugayaHisagi 7-Feb-16 3:24am View

Ok...I'll try. I thought if there's any similar code somewhere to have a look, because I cant really find a close one in google (or maybe I'm bad at googling specific stuff). And I'm quite new in doing cryptographic programmings, so I'm kinda lost somewhere. But thanks a lot for your guidance, I'll try and see again. Thanks again!!! =)

HitsugayaHisagi 5-Feb-16 21:30pm View

I erm.. cant really imagine how the code looks like, may you please give me an example?

HitsugayaHisagi 5-Feb-16 21:13pm View

Hmm...still having problem, 'System.Numerics.BigInteger' does not contain a definition for 'Exp'.

BigInteger sqrt = BigInteger.Exp(BigInteger.Log(value)/2);
if ((value % 2) == 0) return false;
for (var i = 3; i <= sqrt; i += 2)
if ((value % i) == 0) return false;
return true;
I did check out, and it seems to use Math.Exp is actually correct.

HitsugayaHisagi 4-Feb-16 10:46am View

you mean like,

public bool CheckIfPrime(BigInteger n) //to check if the random number generated is prime
{
BigInteger sqrt = Math.Exp(BigInteger.Log(n)/2);
//but errors at this part (cannot implicitly convert type 'double' to 'System.Numerics.BigInteger'. An explicit conversion exists)
if ((n % 2) == 0) return false;
for (var i = 3; i <= sqrt; i += 2)
if ((n % i) == 0) return false;
return true;
}

HitsugayaHisagi 4-Feb-16 10:09am View

Deleted

I tried this code

Random rand = new Random();
BigInteger p = BigInteger.genPseudoPrime(512, 5, rand);
txtP.Text = p.ToString();

Random rand2 = new Random();
do
{
BigInteger q = BigInteger.genPseudoPrime(512, 5, rand);
}
while (p == q);
txtQ.Text = q.ToString();

But it seems that the genPseudoPrime is not in the assembly, so I tried to add some such as System.Runtime.InteropServices, System.Xml, System.Reflection, and also downloaded from

http://www.codeproject.com/Articles/5266/Client-Server-Encryption-plus-extras?fid=25048&fr=26#xx0xx

Still, it doesn't work. Any idea what should I do?

HitsugayaHisagi 4-Feb-16 6:22am View

which means it is not wise to use this code for checking BigInteger, you mean?

HitsugayaHisagi 3-Feb-16 9:59am View

how would the one with param array look like?

HitsugayaHisagi 3-Feb-16 9:54am View

Deleted

I'll give a try on the generating prime directly, at least it organizes the code a bit. May I know how to start on it? Like using genPseudoPrime or something else?

HitsugayaHisagi 15-Jan-16 4:07am View

No, I couldn't find any in google as well, not even the one SA posted below (Thanks SA for the link, but I still can't find any codes related to certificateless concept). If I'm not desperate enough I wouldn't be asking for help here. I posted here thinking that maybe if any one with experience in programming world would know where to find websites that shares source code with each other. I'm very new to the programming world btw.

Comments by HitsugayaHisagi (Top 17 by date)