Csharp/C Sharp by API/System.Security.Cryptography/ProtectedData

ProtectedData.Protect

<source lang="csharp">

using System; using System.Text; using System.Security.Cryptography; class MainClass {

   public static void Main()
   {
       string str = "string";
       byte[] entropy = { 0, 1, 2, 3, 4, 5, 6, 7, 8 };
       byte[] enc = ProtectedData.Protect(Encoding.Unicode.GetBytes(str), entropy, DataProtectionScope.LocalMachine);
       Console.WriteLine("\nEncrypted string = {0}", BitConverter.ToString(enc));
       byte[] dec = ProtectedData.Unprotect(enc, entropy, DataProtectionScope.CurrentUser);
       Console.WriteLine("\nDecrypted data using CurrentUser scope = {0}", Encoding.Unicode.GetString(dec));
   }

}

 </source>

ProtectedData.Unprotect

<source lang="csharp">

using System; using System.Text; using System.Security.Cryptography; class MainClass {

   public static void Main()
   {
       string str = "string";
       byte[] entropy = { 0, 1, 2, 3, 4, 5, 6, 7, 8 };
       byte[] enc = ProtectedData.Protect(Encoding.Unicode.GetBytes(str), entropy, DataProtectionScope.LocalMachine);
       Console.WriteLine("\nEncrypted string = {0}", BitConverter.ToString(enc));
       byte[] dec = ProtectedData.Unprotect(enc, entropy, DataProtectionScope.CurrentUser);
       Console.WriteLine("\nDecrypted data using CurrentUser scope = {0}", Encoding.Unicode.GetString(dec));
   }

}

 </source>