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HMC
Tux's lil' helper
Joined: 06 Jul 2005
Posts: 79
Location: Australia
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 Posted: Sat Mar 06, 2010 1:59 pm Post subject: Keystroke feedback with asterisk in console |
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Hi everyone,
I am looking for method of enabling keystroke feedback (asterisk) when typing passwords at bash console.
Same during the boot process (luks passphrase - kernel compiled with genkernel)
Are there any reasons (eg security) not to do this.
Search eludes me on this one - issue with keywords
Thanks
PS. ~x86 |
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Watchman
Joined: 20 Apr 2005
Posts: 6747
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| Posted: Sat Mar 06, 2010 2:47 pm Post subject: Re: Keystroke feedback with asterisk in console |
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[quote="HMC"]I am looking for method of enabling keystroke feedback (asterisk) when typing passwords at bash console.[/code]
It depends on the program you use. For instance, sudo has a "pwfeedback" option.
| Quote: | | Same during the boot process (luks passphrase - kernel compiled with genkernel) |
I suppose with luks you are lost. Without luks, you can store e.g. your "real" password with gpg and pipe it: pinentry-curses also shows stars.
| Quote: | | Are there any reasons (eg security) not to do this. |
Not really. One might argue that giving away the length of the password somewhat weakens it, but for any real setup this weakening should be close to neglectable. |
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HMC
Tux's lil' helper
Joined: 06 Jul 2005
Posts: 79
Location: Australia
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| Posted: Sat Mar 06, 2010 3:19 pm Post subject: |
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Thanks that straightened me out.
I'll be looking at su and sudo docs. For some reason I thought (don't know why) it was a function of bash (and busybox), not the app.
Cheers |
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