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Problem in Password encryption

 
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HI

I have a java program that will create a property file in that I have to write the user Id and password. But the password has to be encrypted.

The java program will get the inputs from the user after running this program i will get the user id input as : ramesh
and password as : ramesh. After that I will encrypt the password and then writing into property file.

Here the problem is I want to hide or (as to show as ****)the password while the user is typing..

HOw to do this in normal java class.
 
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Check out the javax.swing.JPasswordField class.

If you encrypt the user's password, how (and where) will you store the encryption key? You've simply transformed the problem of storing a password into the problem of storing an encryption key, which doesn't buy you much in terms of security.
 
Meet Gaurav
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HI

Thanks for the reply

This is not a swing application..Basic java class. Am using a diff. logic for encryption and then saving this in a property File.

Am running this java program in command prompt and then the java program is asking for password when the user types "password" its displaying on the screen
 
Ulf Dittmer
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There was a recent discussion on how to do this without Swing: https://coderanch.com/t/386342/java/java/Core-java-password-hiding

But the more important question is the one I raised in the second paragraph of my post: how will you store the encryption key?
 
Meet Gaurav
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This is the Code,
System.out.print("Enter the Password");
String Password = br.readLine();

While running this asking for the password and user typed password on the command prompt its displaying on the screen

I want to hide that or simply show ****

Please advice
 
Meet Gaurav
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Any possibility in Java 1.5.. Please advice
 
Meet Gaurav
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Even I tried this

With the right OS you can do this:

public static void echo(boolean on) {
try {
String[] cmd = {
"/bin/sh",
"-c",
"/bin/stty " + (on ? "echo" : "-echo") + " < /dev/tty"
};
Process p = Runtime.getRuntime().exec(cmd);
p.waitFor();
}
catch (IOException e) { }
catch (InterruptedException e) { }
}


Then use echo(false) to turn off echo, and echo(true) to turn it back
on again:


BufferedReader br = new BufferedReader(new InputStreamReader(System.in));


try {
echo(false);
System.out.print("enter password: ");
String pass = br.readLine();
System.out.println();
System.out.println("you entered: " + pass);
}
finally {
echo(true);
}
 
Ulf Dittmer
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Did you actually read the topic I linked to?

Also, please check your private messages.
[ October 14, 2008: Message edited by: Ulf Dittmer ]
 
Meet Gaurav
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Sure will check my private message..

Is there any way to Turn off the Echo using java code...
 
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Have you read the link already? It mentions System.console() which can do just that.
 
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