Blackberry 8520 Version 5.0 User Guide - Page 82

User Guide Messages : Your device trusts the certificate chain. : The sender's email address does not match the email address of the certificate subject, or the sender's certificate is revoked, is not trusted, cannot be verified, or is not on your device. : The certificate is weak, the certificate status is not current, or your device requires more data to verify the trust status of the certificate. : The sender's certificate is expired. Encryption status indicators Your administrator sets whether messages that you receive are considered to be strong or weak. : The message is strongly encrypted. : The message is weakly encrypted. Check the status of a certificate or certificate chain If a certificate is included in a received message, or is already stored in the key store on your BlackBerry® device, you can check the status of the sender's certificate, or you can check the status of the sender's certificate and all other certificates in the certificate chain. 1. In a message, highlight a digital signature indicator. 2. Press the Menu key. 3. Click Check Sender's Certificate or Check Sender's Cert Chain. S/MIME-protected message options Change your signing or encryption certificate Your BlackBerry® device uses your encryption certificate to encrypt messages in the sent items folder and includes your encryption certificate in messages that you send so that recipients can encrypt their reply messages. 1. On the Home screen or in a folder, click the Options icon. 2. Click Security Options. 3. Click S/MIME. 4. In the Signing Options section or the Encryption Options section, change the Certificate field. 5. Press the Menu key. 80