StephaneLenclud@268: using System;
StephaneLenclud@268: using System.Collections.Generic;
StephaneLenclud@268: using System.Linq;
StephaneLenclud@268: using System.Security;
StephaneLenclud@268: using System.Text;
StephaneLenclud@268: using System.Threading.Tasks;
StephaneLenclud@268: 
StephaneLenclud@268: namespace SharpDisplayManager
StephaneLenclud@268: {
StephaneLenclud@268:     /// <summary>
StephaneLenclud@268:     /// As per: http://weblogs.asp.net/jongalloway/encrypting-passwords-in-a-net-app-config-file
StephaneLenclud@268:     /// </summary>
StephaneLenclud@268:     class Secure
StephaneLenclud@268:     {
StephaneLenclud@268:         static byte[] entropy = System.Text.Encoding.Unicode.GetBytes("kd566slqfjls234895DFG743fqdlskj345SDFDepozwxc,n*ù^$^é");
StephaneLenclud@268: 
StephaneLenclud@268:         public static string EncryptString(System.Security.SecureString input)
StephaneLenclud@268:         {
StephaneLenclud@268:             byte[] encryptedData = System.Security.Cryptography.ProtectedData.Protect(
StephaneLenclud@268:                 System.Text.Encoding.Unicode.GetBytes(ToInsecureString(input)),
StephaneLenclud@268:                 entropy,
StephaneLenclud@268:                 System.Security.Cryptography.DataProtectionScope.CurrentUser);
StephaneLenclud@268:             return Convert.ToBase64String(encryptedData);
StephaneLenclud@268:         }
StephaneLenclud@268: 
StephaneLenclud@268:         public static SecureString DecryptString(string encryptedData)
StephaneLenclud@268:         {
StephaneLenclud@268:             try
StephaneLenclud@268:             {
StephaneLenclud@268:                 byte[] decryptedData = System.Security.Cryptography.ProtectedData.Unprotect(
StephaneLenclud@268:                     Convert.FromBase64String(encryptedData),
StephaneLenclud@268:                     entropy,
StephaneLenclud@268:                     System.Security.Cryptography.DataProtectionScope.CurrentUser);
StephaneLenclud@268:                 return ToSecureString(System.Text.Encoding.Unicode.GetString(decryptedData));
StephaneLenclud@268:             }
StephaneLenclud@268:             catch
StephaneLenclud@268:             {
StephaneLenclud@268:                 return new SecureString();
StephaneLenclud@268:             }
StephaneLenclud@268:         }
StephaneLenclud@268: 
StephaneLenclud@268:         public static SecureString ToSecureString(string input)
StephaneLenclud@268:         {
StephaneLenclud@268:             SecureString secure = new SecureString();
StephaneLenclud@268:             foreach (char c in input)
StephaneLenclud@268:             {
StephaneLenclud@268:                 secure.AppendChar(c);
StephaneLenclud@268:             }
StephaneLenclud@268:             secure.MakeReadOnly();
StephaneLenclud@268:             return secure;
StephaneLenclud@268:         }
StephaneLenclud@268: 
StephaneLenclud@268:         public static string ToInsecureString(SecureString input)
StephaneLenclud@268:         {
StephaneLenclud@268:             string returnValue = string.Empty;
StephaneLenclud@268:             IntPtr ptr = System.Runtime.InteropServices.Marshal.SecureStringToBSTR(input);
StephaneLenclud@268:             try
StephaneLenclud@268:             {
StephaneLenclud@268:                 returnValue = System.Runtime.InteropServices.Marshal.PtrToStringBSTR(ptr);
StephaneLenclud@268:             }
StephaneLenclud@268:             finally
StephaneLenclud@268:             {
StephaneLenclud@268:                 System.Runtime.InteropServices.Marshal.ZeroFreeBSTR(ptr);
StephaneLenclud@268:             }
StephaneLenclud@268:             return returnValue;
StephaneLenclud@268:         }
StephaneLenclud@268:     }
StephaneLenclud@268: }