/////////////////////////////////////////////////////////////////////////////
/////////////////////////////////////////////////////////////////////////////
/////////////////////////////////////////////////////////////////////////////
// Helper functions: Hash a password
/// <include file='doc\FormsAuthentication.uex' path='docs/doc[@for="FormsAuthentication.HashPasswordForStoringInConfigFile"]/*' />
/// <devdoc>
/// Initializes FormsAuthentication by reading
/// configuration and getting the cookie values and encryption keys for the given
/// application.
/// </devdoc>
public static String HashPasswordForStoringInConfigFile(String password, String passwordFormat)
{
if (password == null)
{
throw new ArgumentNullException("password");
}
if (passwordFormat == null)
{
throw new ArgumentNullException("passwordFormat");
}
byte [] bBlob;
if (String.Compare(passwordFormat, "sha1", true, CultureInfo.InvariantCulture) == 0)
{
bBlob = GetMacFromBlob(Encoding.UTF8.GetBytes(password));
}
else if (String.Compare(passwordFormat, "md5", true, CultureInfo.InvariantCulture) == 0)
{
bBlob = GetMD5FromBlob(Encoding.UTF8.GetBytes(password));
}
else
{
throw new ArgumentException(HttpRuntime.FormatResourceString(SR.InvalidArgumentValue, "passwordFormat"));
}
return(MachineKey.ByteArrayToHexString(bBlob, 0));
}
/////////////////////////////////////////////////////////////////////////////
/////////////////////////////////////////////////////////////////////////////
/////////////////////////////////////////////////////////////////////////////
// Encrypt a ticket
/// <include file='doc\FormsAuthentication.uex' path='docs/doc[@for="FormsAuthentication.Encrypt"]/*' />
/// <devdoc>
/// Given a FormsAuthenticationTicket, this
/// method produces a string containing an encrypted authentication ticket suitable
/// for use in an HTTP cookie.
/// </devdoc>
public static String Encrypt(FormsAuthenticationTicket ticket)
{
if (ticket == null)
{
throw new ArgumentNullException("ticket");
}
Initialize();
//////////////////////////////////////////////////////////////////////
// Step 1: Make it into a binary blob
byte [] bBlob = MakeTicketIntoBinaryBlob(ticket);
if (bBlob == null)
{
return(null);
}
if (_Protection == FormsProtectionEnum.None)
{
return(MachineKey.ByteArrayToHexString(bBlob, 0));
}
//////////////////////////////////////////////////////////////////////
// Step 2: Get the MAC and add to the blob
if (_Protection == FormsProtectionEnum.All || _Protection == FormsProtectionEnum.Validation)
{
byte [] bMac = MachineKey.HashData(bBlob, null, 0, bBlob.Length);
if (bMac == null)
{
return(null);
}
Trace("Encrypt: MAC length is: " + bMac.Length);
byte [] bAll = new byte[bMac.Length + bBlob.Length];
Buffer.BlockCopy(bBlob, 0, bAll, 0, bBlob.Length);
Buffer.BlockCopy(bMac, 0, bAll, bBlob.Length, bMac.Length);
if (_Protection == FormsProtectionEnum.Validation)
{
return(MachineKey.ByteArrayToHexString(bAll, 0));
}
bBlob = bAll;
}
//////////////////////////////////////////////////////////////////////
// Step 3: Do the actual encryption
bBlob = MachineKey.EncryptOrDecryptData(true, bBlob, null, 0, bBlob.Length);
return(MachineKey.ByteArrayToHexString(bBlob, bBlob.Length));
}
