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Add new "pin complex" type to supported keyguard PINs

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This adds a feature to allow DevicePolicyAdmins to prevent using
simple PINs, which are defined as those containing more than 3
repeated values. Examples include '1234', '2468', '1111', '9876', etc.

Bug 12081139

Change-Id: I68d8fe2459837cb5e083724e1740e65f0519f7e1
This commit is contained in:
Nicolas Prevot
2014-01-25 01:02:04 +00:00
committed by Jim Miller
parent e2403822ec
commit 8fd852e7c2
5 changed files with 19 additions and 5 deletions
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17
src/com/android/settings/ChooseLockPassword.java
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@@ -329,10 +329,18 @@ public class ChooseLockPassword extends SettingsActivity {
}
}
if (DevicePolicyManager.PASSWORD_QUALITY_NUMERIC == mRequestedQuality
&& (letters > 0 || symbols > 0)) {
// This shouldn't be possible unless user finds some way to bring up
// soft keyboard
return getString(R.string.lockpassword_pin_contains_non_digits);
|| DevicePolicyManager.PASSWORD_QUALITY_NUMERIC_COMPLEX == mRequestedQuality) {
if (letters > 0 || symbols > 0) {
// This shouldn't be possible unless user finds some way to bring up
// soft keyboard
return getString(R.string.lockpassword_pin_contains_non_digits);
}
// Check for repeated characters or sequences (e.g. '1234', '0000', '2468')
final int sequence = LockPatternUtils.maxLengthSequence(password);
if (DevicePolicyManager.PASSWORD_QUALITY_NUMERIC_COMPLEX == mRequestedQuality
&& sequence > LockPatternUtils.MAX_ALLOWED_SEQUENCE) {
return getString(R.string.lockpassword_pin_no_sequential_digits);
}
} else if (DevicePolicyManager.PASSWORD_QUALITY_COMPLEX == mRequestedQuality) {
if (letters < mPasswordMinLetters) {
return String.format(getResources().getQuantityString(
@@ -375,6 +383,7 @@ public class ChooseLockPassword extends SettingsActivity {
return getString(mIsAlphaMode ? R.string.lockpassword_password_recently_used
: R.string.lockpassword_pin_recently_used);
}
return null;
}