hiding a password typed in an Xterm using C

[Jabrant]

I am currently writing a C program in the UNIX environment that asks the user to enter a password. I am looking for a way to have their input not be displayed on the screen while they are typing. I noticed here at work when logging onto a server via an Xterm when asked for my password -- nothing happens on the screen. Does anyone know how to do this or other easy ways to hide the password from being displayed. Thanks so much.

 

[Zyrenthian]

Never tried it but throw this in ad see what happens

printf("\r "

i think this will bring you back to the beginning of the line and replace what is written with a space.

Matt

 

[Cagliostro]

int i = 0;
char* pwd = NULL;
while(x != 13)
{
x = getch();
putc('*');

if(x == 0)
{
getch();
break;
}else if(x == '\b')
{
if(x)x--;
contine;
}else ...of other key
pwd = realloc(pwd, i+1);
pwd = x;
i++;
}
i++;
pwd = 0;

Ion Filipski

filipski@excite.com

 

[Nosferatu]

The getch() function doesn't display the character entered, that is the way the UNIX passw are not show.
[red]Nosferatu[/red]
We are what we eat...
There's no such thing as free meal...

 

[vkavith]

remember to use getch() and not getche(), the 'e' in the latter case will echo the character typed.

Also, you could also display '*' as the case in windows when it comes to echoing password.

Sriks