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3. Clear the Allow Key Store Backup/Restore checkbox.
4.
Press the key > Save.
To turn on automatic backup and restore of key store data, select the Allow Key Store Backup/Restore checkbox.
Change the refresh rate for certificate revocation lists
1. On the home screen or in a folder, click the Options icon.
2. Click Security > Advanced Security Settings > Key Stores.
3. In the Certificate Status section, change the Expires After field.
4.
Press the key > Save.
Your BlackBerry smartphone downloads a new revocation status automatically when your smartphone uses a key store
item with a status that is older than the time limit that you set.
Reject certificate revocation lists from unverified CRL servers
1. On the home screen or in a folder, click the Options icon.
2. Click Security > Advanced Security Settings > Key Stores.
3. Clear the Accept Unverified CRLs checkbox.
4.
Press the key > Save.
Your BlackBerry smartphone rejects certificate revocation lists from CRL servers that the BlackBerry MDS Connection
Service can't verify.
Smart cards
About using a smart card with your smartphone
Smart cards store certificates and private keys. You can use a smart card reader to import certificates from a smart card to
the key store on your
BlackBerry smartphone, but you can't import private keys. As a result, private key operations such as
signing and decryption use the smart card, and public key operations such as verification and encryption use the public
certificates on your smartphone.
If you use a smart card certificate to authenticate with your smartphone, after you connect your smart card reader to your
smartphone, your smartphone requests authentication from the smart card each time that you unlock your smartphone.
You can install multiple smart card drivers on your smartphone, including drivers for microSD smart cards, but you can only
authenticate to one smart card at a time. If you are authenticating using a microSD smart card and you want to transfer
media files between your microSD smart card and your computer, you must temporarily turn off two-factor authentication
or select a different authentication option.
User Guide Security
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