1024338 - [Flame][V1.4][Lockscreen]Device password box responds very slowly after you input wrong lockscreen password for 10 times.

Status: RESOLVED INVALID

(Firefox OS Graveyard :: Gaia::System::Lockscreen, defect, P5)

Description

[panda67231]

Attachment: VID_20140612_145944.3gp

[1.Description]:
Input wrong lockscreen password for 10 times, then the password edit box will respond more slower.

Attachment video:[VID_20140612_145944.3gp]
Attachment  log:[bugreport.txt]&[logcat.txt]
Happened time: 6:22 AM

[2.Testing Steps]: 
Precondtion: Set a lockscreen password
1. Lock screen and light up screen
2. Input wrong password
3. Repeat step 2 for 10 times

[3.Expected Result]: 
3. When user input wrong password, these password in edit box should be cleared quickly.

[4.Actual Result]: 
3. These wrong password in edit box will not be cleared immeditely from the 7nd time, and its reaction is getting slower with wrong input count increasing

[5.Reproduction build]: 
Gaia        7709936aeb21859d1607dbd038489493803bb085
Gecko     https://hg.mozilla.org/releases/mozilla-b2g30_v1_4/rev/5bf038fae0f1
BuildID    20140522160202
Version    30.0

[6.Reproduction Frequency]: 
Always Recurrence,3/3

Comment 1

[panda67231]

Attachment: bugreport.txt

Comment 2

[panda67231]

Attachment: logcat.txt

Comment 3

[Mike Lee [:mlee]]

Product Team,

10 failed lockscreen attempts seems excessive, do we have any feature planned to limit the number of failed attempts before locking the phone or temporarily disabling further attempts?

FxOS Perf Triage

Comment 4

[Peter Dolanjski [:pdol]]

Bruce(In reply to Mike Lee [:mlee] from comment #3)
> Product Team,
> 
> 10 failed lockscreen attempts seems excessive, do we have any feature
> planned to limit the number of failed attempts before locking the phone or
> temporarily disabling further attempts?

Bruce?

Comment 5

[Bruce Huang [:bhuang] (inactive)]

After 5 attempts, each failed input causes the wait time to exponentially increase in order to dissuade brute force attempts.  That's why it starts to feel sluggish at around 8~10 tries.