Pgp Encryption For Mac Os X

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Mail User Guide

Email messages that are digitally signed or encrypted can offer enhanced security when sending or receiving email.

Send digitally signed and encrypted emails

A digitally signed message lets your recipients verify your identity as the sender; an encrypted message offers an even higher level of security. To send signed messages, you must have a personal certificate in your keychain. To send encrypted messages, the recipient’s certificate must be in your keychain.

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In the Mail app on your Mac, choose File > New Message.
Move the pointer over the From field, click the pop-up menu that appears, then choose the account for which you have a personal certificate in your keychain.
A Signed icon (containing a checkmark) in the message header indicates the message will be signed when you send it.
Address the message to recipients.
An Encrypt (closed lock) icon appears next to the Signed icon if your keychain contains a personal certificate for every recipient; the icon indicates the message will be encrypted when you send it.
If you don’t have a certificate for every recipient, you must send your message unencrypted. Click the Encrypt icon to replace the closed lock icon with an open lock icon.

Some mailing lists reject digitally signed messages because the signature is treated as an attachment. To send the message unsigned, click the Signed icon in your message; an x replaces the checkmark.

Note: If for some reason your certificate isn’t associated with your email address, or if you want to use your certificate with a different email address, Control-click the certificate in Keychain Access, choose New Identity Preference, and provide the requested information.

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Receive digitally signed and encrypted emails

In the Mail app on your Mac, a Security field in the header area indicates whether a message is signed or encrypted.

A signed icon (a checkmark) appears in the header area of a signed message. To view the certificate details, click the icon.
If the message was altered after it was signed, Mail displays a warning that it can’t verify the message signature.
A lock icon appears in the header area of an encrypted message. If you have your private key in your keychain, the message is decrypted for viewing. Download quicktime for mac sierra. Otherwise, Mail indicates it can’t decrypt the message. See If Mail can’t decrypt emails.

If you want to include encrypted messages when you search for messages in Mail, set the option in the General pane of Mail preferences. The option enables Mail to search individual words, even though the message is stored encrypted.

See alsoUse personal certificates in Mail on MacUse SSL to connect to the outgoing mail server in Mail on Mac

Mac Pgp Encryption

PGP Whole Disk Encryption For Mac OS X Frequently Asked Questions
1. Why does the Startup Disk Preferences Pane in Mac OS X display the wrong icon?
When running on Mac OS X 10.4 (Tiger), the Startup Disk Preferences Pane selects the wrong startup disk due to an incompatability with the Apple technology used to provide PGP Desktop with startup disk encryption capability.
However, this incompatibility is corrected with Mac OS X 10.5 (Leopard) the Startup Disk Preferences Pane will show the correct startup disk.
2. Why can't I encrypt the system disk on my PowerBook/PowerMac/iBook/iMac systems?
Encryption of the boot drive is only available on Intel based Mac OS X 10.4 and 10.5 systems.
Encrypting the system disk requires an Intel based computer booting from a GUID Partition Table (GPT) disk. Therefore, encrypting system disks on PowerPC based Macintosh systems is not supported.
3. Why can't I encrypt my disk? It shows up in the list of disks available, but the disk displays as grayed out.
As indicated in the list, the disk is an Apple Partition Map (APM) disk. PGP Whole Disk Encryption supports GUID Partition Table (GPT) disks and Master Boot Record (MBR) disks. APM disks are not supported using PGP Whole Disk Encryption. To encrypt your disk, you will have to partition your disk as a GPT disk.

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Caution: Beware that by partitioning your disk, any data on the disk will be lost. Before partitioning your disk, make sure you backup your data on the disk.

4. Why does the Leopard Installer want to erase my system disk?
The Leopard installer requires a portion of free space following a system volume on your disk. When your disk was encrypted, that free space was used by a boot partition for the PGP BootGuard that allows you to login to your encrypted disk.
To upgrade from Tiger to Leopard or to reinstall Leopard, your must first decrypt your disk. Your disk cannot be used by the Leopard installer if it is encrypted.
Click the following link for more information on resolving this issue: Mac OS X Installer prompts to erase PGP Whole Disk Encrypted boot disk
5. After deleting a partition or resizing partitions on my encrypted disk with Disk Utility, I am unable to boot the system.
The Leopard Disk Utility provides more flexibility for managing disk partitions on the system. Disk Utility completely ignores boot partitions and will delete the partitions completely. Deleting the boot partition will render the system unbootable. Resizing an encrypted system partition is not supported with PGP Whole Disk Encryption.
To resize an encrypted system partition, the disk must be decrypted before resizing the partition. After resizing the partitions you can re-encrypt the disk.
6. After I used Boot Camp Assistant on my encrypted disk, I am unable to boot the system.
The Boot Camp Assistant performs much like Disk Utility. It will resize and move partitions without regard for boot partitions.
Decrypt your disk before installing Boot Camp.
To resize an encrypted system partition, the disk must be decrypted before resizing the partition. After resizing the partitions you can re-encrypt the disk.