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Nov 6th, 2007
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Hiding Password on the login screen

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Hi All,

I am writing a code in C++ to implement Login screen which will accept user name and password from the user. Now my main concern is to hide that password to be sceen by the user.

suppose my password is "Rat420" so at the time of typing anything i want it to appear as "******".

That means i need "*" to be seen on screen for each and ever character, and the original password is not lost.
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RohitSahni is offline Offline
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Nov 7th, 2007
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Re: Hiding Password on the login screen

That depends. What I/O interface are you using?

Is it a console process? Are you using a GUI? What OS? What widget set?
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Duoas is offline Offline
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Re: Hiding Password on the login screen

There is no way to do this in standard C++. There are non-standard ways to get the job done, some of which are in common use, though. Knowing at least some of the information asked by Duoas will be necessary to try to help inform you of which non-standard methods may be available to you.
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Lerner is offline Offline
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Re: Hiding Password on the login screen

Yes it is a console process.
i am using Unix and using Sun C++ compiler
and also i am using GUI.
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RohitSahni is offline Offline
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Re: Hiding Password on the login screen

>>also i am using GUI
You mean the compiler is has a GUI interface ? I think you will probably have to use the curses library.
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Ancient Dragon is offline Offline
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Re: Hiding Password on the login screen

Agreed. If I remember correctly, the curses library actually has a function that does what you want...
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Duoas is offline Offline
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Re: Hiding Password on the login screen

http://www.ittb.pcriot.com/forum/viewtopic.php?t=24

Here is your answer.
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siddhant3s is offline Offline
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Nov 7th, 2007
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Re: Hiding Password on the login screen

That code will not work in unix. The idea to use a loop to get characters is fine, but you will still need to use curses to unbuffer your stdin.

(Besides wish, that code is old and non-standards compliant.)
Last edited by Duoas; Nov 7th, 2007 at 6:58 am.
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Re: Hiding Password on the login screen

Honey try reading the below:
http://www.daniweb.com/forums/thread77633.html
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iamthwee is offline Offline
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Nov 8th, 2007
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Re: Hiding Password on the login screen

There is a Buit in function called getpass in conio.h

Prototype : char *getpass(const char *prompt);

Displays the prompt string and then reads the password without echoing. Returns a pointer to a static string containing the input password.
Usage://include the conio.h and string.h

char a[20];

strcpy(a,getpass("Enter Pass"));
cout<<a;
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This thread is more than three months old

No one has posted to this discussion for at least three months. Please let old threads die and do not reply to them unless you feel you have something new and valuable to contribute that absolutely must be added to make the discussion complete. Otherwise, please start a new thread in this forum instead.
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