Blackberry 8900 manual PGP protected messages, PGP protected message basics

User Guide PGP protected messages

•If you use message classifications, verify that the message classification supports the signing or encryption options that you want. Try using a different message classification.

I cannot open an attachment in an encrypted message

The attachment information might not be available on the BlackBerry® Enterprise Server, your administrator might have set options to prevent you from opening attachments in encrypted messages, or you might have received the message from an email account that does not support attachments in encrypted messages.

You cannot open an attachment in a PGP® protected message that was encrypted using the OpenPGP format by an IBM® Lotus Notes® client working with PGP® Desktop Professional or that was encrypted by the PGP® Universal Server.

PGP protected messages

PGP protected message basics

About signing and encrypting messages

You can digitally sign or encrypt messages to add another level of security to email messages and PIN messages that you send from your BlackBerry® device. Digital signatures are designed to help recipients verify the authenticity and integrity of messages that you send. When you digitally sign a message using your private key, recipients use your public key to verify that the message is from you and that the message has not been changed.

Encryption is designed to keep messages confidential. When you encrypt a message, your device uses the recipient’s public key to encrypt the message. Recipients use their private key to decrypt the message.

To send an encrypted PIN message, you must have a PIN and an email address for the contact in your contact list. Your device uses the email address in your contact list to locate a PGP® key or certificate for the contact.

Sign or encrypt a message

You can sign or encrypt email messages and PIN messages.

1.When composing a message, change the Encoding field.

2.If necessary, change the Classification field.

Encrypt a PGP protected message with a pass phrase

By default, your BlackBerry® device uses your PGP® key to encrypt messages.

1.When composing a message, change the Encoding field to one that uses encryption.

2.Press the Menu key.

3.Click Options.

4.Change the Use Conventional Encryption field to Yes.

5.Press the Menu key.

6.Click Save.

Using a secure method, let the recipient know what the pass phrase is.

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