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DRAFT

Chapter 6 — Configure the Computer

Dolphin CT50 Mobile Computer User Guide 65

Android supports DER-encoded X.509 certificates saved in files with a

.crt or .cer file extension. To install a valid certificate with a .der or it.

Android also supports X.509 certificates saved in PKCS#12 key store

files with a .p12 or .pfx entension. To install a valid key store file with

another extension, you must change the extension to .p12 or .pfx to

install it. When you install a certificate from a PKCS#12 key store,

Android also installs any accompanying private key or certificate

authority certificates.

Load a Certificate

To use a certificate, you must install it in the trusted credential storage on

the computer.

1 Copy the certificate or key store from your PC to a microSD card.

2 Install the microSD card in the computer and turn the computer on.

3 Start the Settings app and tap Security > Install from SD card.

4 Tap the name of the certificate or key store to install it. If prompted,

enter the key store password and tap OK.

5 Enter a name for the certificate and tap OK.

Disable or Remove Certificates

If a certificate is compromised, or your organization chooses not to trust

it, you can disable or remove it.

1 Start the Settings app and tap Security > Trusted credentials. The

trusted credentials screen has two tabs:

•System shows CA certificates that are installed in the ROM.

•User shows CA certificates you have installed yourself.

2 Tap the name of the certificate to disable or remove. The certificate

details screen appears.

3 Scroll to the bottom of the details screen and tap Disable (for System

certificates) or Remove (for User certificates).

If necessary, you can enable a disabled System certificate from this

location. If you remove a User certificate, you must install it again to

enable it.

4 Tap OK.

Note: Apps such as Email and Browser that support certificates allow

you to install certificates directly from within the app. For more

information, see the Help that comes with the app.

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