CODEWITHSUNDEEP
c#cryptographyrsades
ghazaal
ghazaal

Reputation: 1

Converting DES encryption to RSA encryption

I have an Encyption Part in my C# program that is encrypted with DES encryption. It just encrypts "005". I want this part but with RSA encryption.I don't know how to use C# codes.Can anyone help me

/*********************Message Encryption******************************/
string smsg = "005";
string venc;
DESCryptoServiceProvider iDESCryptoServiceProvider = new DESCryptoServiceProvider();
System.Text.Encoding iEncoding = new System.Text.UTF8Encoding();
byte[] vkey = iEncoding.GetBytes("12345678");
byte[] viv = { 1, 2, 3, 4, 5, 6, 7, 8 };
ICryptoTransform iICryptoTransform = iDESCryptoServiceProvider.CreateEncryptor(vkey, viv);
byte[] vmsg = iEncoding.GetBytes(smsg);
byte[] benc = iICryptoTransform.TransformFinalBlock(vmsg, 0, vmsg.Length);
venc = System.Convert.ToBase64String(benc);
/****************Message Encryption******************************/

Upvotes: 0

Views: 1163

Answers (1)

Trimack
Trimack

Reputation: 4213

This is more of a cryptography task.

Anyway, what you need to do is to swap DESCryptoServiceProvider for RSACryptoServiceProvider. Additionally, as RSA is a PKI cipher while DES is a symmetric block cipher, you will need to create appropriate parameters and so on. So the actual encryption will be also done using different keys, if that was one of your goals to achieve.

Finally, all the necessary code can be found at http://msdn.microsoft.com/en-us/library/system.security.cryptography.rsacryptoserviceprovider.aspx

EDIT

Ok, so from what I gather from your responses, You don't actually want to use RSA. Just any other cipher, right?

In that case, what you can choose from, assuming you want to keep .NET' System.Security.Crytography library as your source, you can choose from 4 symmetric encryption (read the same type of) algorithms. These are:

They have all very similar interface, so just choose one of them (my advice is to pick AES) and rework your code. They have identical interfaces (if I didn't miss something from the quick look), so all you would really need to do is to replace all occurrences of DES with AES. As simple as that.

Hope this helps.

Upvotes: 1

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