Changing Mobian PIN to use alphanumeric pin?
#1
Hello all,

I have been pondering the actual security of using a numeric pin for the lock screen.. Even with a 10 digit pin it can easily be cracked in 2 mins with the right setup. Is there a way to use an alphanumeric pin on Mobian. Thanks.
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#2
(02-06-2021, 07:07 PM)jabadahut91 Wrote: Hello all,

I have been pondering the actual security of using a numeric pin for the lock screen.. Even with a 10 digit pin it can easily be cracked in 2 mins with the right setup. Is there a way to use an alphanumeric pin on Mobian. Thanks.

Or better yet have a numeric pin for login, and something else for ssh etc...
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#3
(02-06-2021, 07:33 PM)evilbunny Wrote:
(02-06-2021, 07:07 PM)jabadahut91 Wrote: Hello all,

I have been pondering the actual security of using a numeric pin for the lock screen.. Even with a 10 digit pin it can easily be cracked in 2 mins with the right setup. Is there a way to use an alphanumeric pin on Mobian. Thanks.

Or better yet have a numeric pin for login, and something else for ssh etc...
Well I have ssh setup with a 4096 bit encryption keys and a 25 char password, but I want to also have the pin be alphanumeric. I'm more worried about if someone gains physical access to the phone while already powered on.  Is this not possible?
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#4
(02-06-2021, 08:48 PM)jabadahut91 Wrote: Well I have ssh setup with a 4096 bit encryption keys and a 25 char password, but I want to also have the pin be alphanumeric. I'm more worried about if someone gains physical access to the phone while already powered on.  Is this not possible?

Did you disable passwords in ssh?
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#5
(02-06-2021, 09:27 PM)evilbunny Wrote:
(02-06-2021, 08:48 PM)jabadahut91 Wrote: Well I have ssh setup with a 4096 bit encryption keys and a 25 char password, but I want to also have the pin be alphanumeric. I'm more worried about if someone gains physical access to the phone while already powered on.  Is this not possible?

Did you disable passwords in ssh?
yes, the key has to be provided alongside with the paraphrase for it. So my issue isn't on the ssh side it's on the lock screen. I want to be able to at least make it a little harder to break past the lock screen if the phone was obtained after the disk has been decrypted. For instance let's say I was mugged carrying it - the power would still be on, I might not have access to get to the ssh quickly enough, and I would want the thief to not be able to take it to a tech savy person who could rig up a simple brute force to bypass the pin on lock screen.
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#6
(02-06-2021, 07:07 PM)jabadahut9 Wrote: ...
Is there a way to use an alphanumeric pin on Mobian. Thanks.

As far as I know this is a pheature of phosh! How about adding a DM on top, say lightdm?
  • ROCKPro64 v2.1 2GB, 16Gb eMMC for rootfs, SX8200Pro 512GB NVMe for /home, HDMI video & sound, Bluetooth keyboard & mouse. Arch (5.13 kernel, Openbox desktop) for general purpose daily PC.
  • PinePhone BraveHeart now v1.2b 3/32Gb daily driver, dual boot via p-boot with Mobian/f2fs/Phosh on eMMC, Arch/ext4/Phosh on SDcard
  • PinePhone v1.2a 2G/16Gb that needs USB board replaced
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#7
Numeric PINS are pathetic security, especially if you use them for on-disk encryption as well.
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#8
(02-07-2021, 05:15 AM)dukla2000 Wrote:
(02-06-2021, 07:07 PM)jabadahut9 Wrote: ...
Is there a way to use an alphanumeric pin on Mobian. Thanks.

As far as I know this is a pheature of phosh! How about adding a DM on top, say lightdm?
I will try that that. Thanks for that idea!
  Reply


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