i want to encrpyt string

Question

1.00/5 (1 vote)

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Hello,
I want to encrypt "Hello world" after click on encrypt Button string should be written in different encrypted format.

For example:

Actual string        out put (i want)  

Hello world          rdIaJwuMRHupXSA7NDjf+Q==         
Hello world          +I3MFzYshgcXg0OCKI6WJQ==       
Hello world          3fYzgRUkKdc6A2hNnKM8lA==

Posted 29-Mar-15 20:33pm

prashant9393

Updated 30-Mar-15 1:15am

Afzaal Ahmad Zeeshan

v3

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Comments

Kornfeld Eliyahu Peter 30-Mar-15 2:39am

The samples you are presenting here look like Base64 encoding - there is no encryption here...

prashant9393 30-Mar-15 2:44am

i want same string input but return diffrent Out put

Kornfeld Eliyahu Peter 30-Mar-15 2:46am

And what will make the difference?
Do you want a true encryption (one way or two way?) or only encoding?

prashant9393 30-Mar-15 2:53am

one way encryption. i want implement product key. if i use this product key so never use on next installation

Kornfeld Eliyahu Peter 30-Mar-15 2:58am

So why encryption - use some random generated value like GUID for every installation...

prashant9393 30-Mar-15 3:01am

i have no knowledge about this please send me the more details to help to develop this

Kornfeld Eliyahu Peter 30-Mar-15 3:02am

https://msdn.microsoft.com/en-us/library/System.Guid(v=vs.110).aspx

2 solutions

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Member 11478643 · Answer 1 · 2015-03-29T21:11:00

Solution 1

Its encrypt function

C#

public static string Base64Encode(string sData)
  {
      try
      {
          byte[] toEncodeAsBytes = System.Text.Encoding.Unicode.GetBytes(sData);
          string returnValue = Convert.ToBase64String(toEncodeAsBytes);

          return returnValue;
      }
      catch (Exception ex)
      {
          throw new Exception("Error in base64Encode" + ex.Message);
      }
  }

Posted 29-Mar-15 21:11pm

Member 11478643

Comments

George Jonsson 30-Mar-15 3:14am

This solution will give the same result every time.

Member 11478643 30-Mar-15 3:21am

string newencrypt=RandomString(15).ToString() + returnValue;

add this .

George Jonsson 30-Mar-15 3:32am

Why would I add anything?
It is your solution, I just pointed out that the OP wanted different results for each request.
And this is not really encryption, right.

prashant9393 30-Mar-15 4:56am

i use this line code but RandomString is show the error please send the code

prashant9393 30-Mar-15 4:51am

i use byte[] toEncodeAsBytes = System.Text.Encoding.Unicode.GetBytes("prashant");
string returnValue = Convert.ToBase64String(toEncodeAsBytes);

but it's Return Same Result Always I want diffrent Result

Member 11478643 30-Mar-15 3:34am

ok

Member 11478643 30-Mar-15 5:03am

Random string function:

private string RandomString(int size)
{
var buffer = new char[size];

for (var i = 0; i < size; i++)
{
buffer[i] = Chars[_rng.Next(Chars.Length)];
}
return new string(buffer);
}

prashant9393 30-Mar-15 5:19am

buffer[i] = Chars[_rng.Next(Chars.Length)];

Chars[_rng.Next what is "Chars " _Rng is variable or what

Member 11478643 30-Mar-15 6:22am

private const string Chars = "abcdefgijkmnopqrstwxyz23456789abcdefgijkmnopqrstwxyz";