Settings 196
Credential Storage
Trusted Credentials
If a certificate authority (CA) certificate gets compromised or
for some other reason you do not trust it, you can disable or
remove it.
1. From a Home screen, touch
Apps
➔
Settings
➔
Security
.
2. Touch
Trusted credentials
.
The trusted credentials screen has two tabs:
• System
: Displays CA certificates that are permanently installed
in the ROM of your device.
•User
: Displays any CA certificates that you installed, for
example, in the process of installing a client certificate.
3. Touch a CA certificate to examine its details.
A scrolling screen displays the details.
4. Scroll to the bottom of the details screen and touch
Disable
to disable a System certificate or
Remove
to
remove a User certificate.
Caution!
When you disable a system CA certificate, the
Disable
button changes to
Enable
, so you can enable the
certificate again, if necessary. When you remove a
user-installed CA certificate, it is permanently
deleted and must be re-installed, if needed.
5. Touch
OK
to return to the certificate list.
When enabled, a check mark appears in the check
box.
Install from Device Storage
Install encrypted certificates from an installed memory card.
Note:
You must have installed a memory card containing
encrypted certificates to use this feature.
1. From a Home screen, touch
Apps
➔
Settings
➔
Security
.
2. Touch
Install from device storage
, then choose a
certificate and follow the prompts to install.