static System.Security.SecureString getPassword()
{
System.Security.SecureString pwd = new System.Security.SecureString();
while (true)
{
System.ConsoleKeyInfo i = System.Console.ReadKey(true);
if (i.Key == System.ConsoleKey.Enter)
{
System.Console.WriteLine();
break;
}
else if (i.Key == System.ConsoleKey.Backspace)
{
if (pwd.Length > 0)
{
pwd.RemoveAt(pwd.Length - 1);
System.Console.Write("\b \b");
}
}
else
{
pwd.AppendChar(i.KeyChar);
System.Console.Write("*");
}
}
pwd.MakeReadOnly();
return(pwd);
}
static System.Security.SecureString getPassword()
{
System.Security.SecureString pwd = new System.Security.SecureString();
while (true)
{
System.ConsoleKeyInfo i = System.Console.ReadKey(true);
if (i.Key == System.ConsoleKey.Enter)
{
System.Console.WriteLine();
break;
}
else if (i.Key == System.ConsoleKey.Backspace)
{
if (pwd.Length > 0)
{
pwd.RemoveAt(pwd.Length - 1);
System.Console.Write("\b \b");
}
}
else
{
pwd.AppendChar(i.KeyChar);
System.Console.Write("*");
}
}
pwd.MakeReadOnly();
return pwd;
}
static System.Security.SecureString GetSecPswd(string prompt)
{
System.Security.SecureString password = new System.Security.SecureString();
System.Console.ForegroundColor = System.ConsoleColor.Gray;
System.Console.Write(prompt);
System.Console.ForegroundColor = System.ConsoleColor.Magenta;
while (true)
{
System.ConsoleKeyInfo cki = System.Console.ReadKey(true);
if (cki.Key == System.ConsoleKey.Enter)
{
System.Console.ForegroundColor = System.ConsoleColor.Gray;
System.Console.WriteLine();
return(password);
}
else if (cki.Key == System.ConsoleKey.Backspace)
{
// remove the last asterisk from the screen...
if (password.Length > 0)
{
System.Console.SetCursorPosition(System.Console.CursorLeft - 1, System.Console.CursorTop);
System.Console.Write(" ");
System.Console.SetCursorPosition(System.Console.CursorLeft - 1, System.Console.CursorTop);
password.RemoveAt(password.Length - 1);
}
}
else if (cki.Key == System.ConsoleKey.Escape)
{
System.Console.ForegroundColor = System.ConsoleColor.Gray;
System.Console.WriteLine();
return(password);
}
else if (System.Char.IsLetterOrDigit(cki.KeyChar) || System.Char.IsSymbol(cki.KeyChar))
{
if (password.Length < 20)
{
password.AppendChar(cki.KeyChar);
System.Console.Write("*");
}
else
{
System.Console.Beep();
}
}
else
{
System.Console.Beep();
}
}
}
/// <summary>
/// Reads masked keystrokes from the system's <see cref="Console"/>.
/// </summary>
/// <param name="useMask">
/// true to write out an asterisk on every keystroke, otherwise, false.
/// </param>
/// <returns>A string.</returns>
public static string ReadSecureString(bool useMask = false)
{
// borrowed from stackoverflow.com and slightly modified
int[] filtered = { 0, 27, 9, 10 };
var secureStr = new System.Security.SecureString();
char chr;
while ((chr = Console.ReadKey(true).KeyChar) != ENTER)
{
if ((chr == BACKSPACE || chr == CTRL_BACKSPACE) && secureStr.Length > 0)
{
if (useMask)
{
Console.Write("\b \b");
}
secureStr.RemoveAt(secureStr.Length - 1);
}
else if (((chr == BACKSPACE) || (chr == CTRL_BACKSPACE)) && (secureStr.Length == 0))
{
// don't append * when length is 0 and backspace is selected
}
else if (filtered.Count(x => chr == x) > 0)
{
// don't append when a filtered char is detected
}
else
{
// append and eventually write * mask
secureStr.AppendChar(chr);
if (useMask)
{
Console.Write('*');
}
}
}
var ptr = Marshal.SecureStringToBSTR(secureStr);
var result = Marshal.PtrToStringBSTR(ptr);
Marshal.ZeroFreeBSTR(ptr);
return(result);
}
public static System.Security.SecureString GetPasswordAsSecureString(string prompt, ConsoleColor?promptColor = null, ConsoleColor?promptBgColor = null)
{
var secureString = new System.Security.SecureString();
foreach (var key in ReadObfuscatedLine(prompt, promptColor, promptBgColor))
{
switch (key)
{
case Backspace:
secureString.RemoveAt(secureString.Length - 1);
break;
default:
secureString.AppendChar(key);
break;
}
}
secureString.MakeReadOnly();
return(secureString);
}
/// <summary>
/// Reads a password from the standard input stream without printing the password characters to the screen.
/// </summary>
/// <remarks>Pressing the backspace key does work while entering the password.</remarks>
/// <returns>A <see cref="System.Security.SecureString"/> instance containing the password that has been entered into the standard input stream.</returns>
public static System.Security.SecureString GetSecurePassword()
{
System.Security.SecureString pwd = new System.Security.SecureString();
while (true)
{
ConsoleKeyInfo i = Console.ReadKey(true);
if (i.Key == ConsoleKey.Enter)
{
break;
}
else if (i.Key == ConsoleKey.Backspace)
{
pwd.RemoveAt(pwd.Length - 1);
//Console.Write("\b \b");
}
else
{
pwd.AppendChar(i.KeyChar);
//Console.Write("*");
}
}
return pwd;
}
/// <summary>
/// Asks the user for a password. This interrupts anything else.
/// Passwords are hidden using stars
/// We keep the password in a safe <see cref="System.Security.SecureString"/> so the full password never retained in memory.
/// (this works because all steps in adding to the <see cref="System.Security.SecureString"/> involve atomics that get flushed immediately)
/// </summary>
/// <param name="msg">Passwort prompt</param>
public System.Security.SecureString PWPrompt(string msg)
{
PreparePrompt(msg);
var result = new System.Security.SecureString();
var typed = 0;
PasswordModeWrapper(msg, (typedPrompt) => {
typed = -1;
Console.WriteLine();
queryModeActive = false;
},
(k) => {
result.InsertAt(typed, k);
typed++;
},
'*',
null,
(k) => {
switch (k.Key)
{
case ConsoleKey.Backspace:
if (typed != 0)
{
result.RemoveAt(typed - 1);
typed--;
}
break;
case ConsoleKey.Delete:
if (typed != result.Length && result.Length != 0)
{
result.RemoveAt(typed);
}
else
{
Beep();
}
break;
case ConsoleKey.LeftArrow:
if (typed != 0)
{
typed--;
}
break;
case ConsoleKey.RightArrow:
if (typed < result.Length)
{
typed++;
}
break;
default:
break;
}
});
PostPreparePrompt();
while (typed != -1)
{
System.Threading.Tasks.Task.Delay(100).Wait();
}
result.MakeReadOnly();
return(result);
}