PGP DESKTOP is a security tool that uses cryptography to protect data:

 * Securely send email or instant messages.
 * Encrypt entire external drives (or external drive partitions) or
   portions of any drive.
 * Create secure virtual disks.
 * Put files and folders in an encrypted, compressed package for easy
   distribution or backup.
 * Shred (secure delete) sensitive files.
 * Create keypairs.
 * Manage both personal and public keys.

UPLOAD #1 contains:

 * INFO: Startup disk troubleshooting notes, new features synopsis
 * DOCS: An Intro to Crypto, Read Me, and User?s Guide PDFs
 * SCREENCAPS: Screen shots of various PGP windows and GUI features
 * INSTALLER: A Stuffit-compressed .dmg disk image
 * REGISTRATION: Patched binary + license and authorization code

End of Life Date: April 1, 2009
End of Standard Support: October 1, 2010
End of Support: April 21, 2011
(Source: [Broadcom][1])

Compatibility
Architecture: PPC (Carbonized) x86 (Intel:Mac)

SYSTEM REQUIREMENTS

 * Mac OS X 10.4.x
 * PowerPC + Intel (Universal Binary)
 * 512 MB RAM
 * 64 MB drive space
 * Email clients: Apple Mail, Microsoft Entourage, Qualcomm Eudora
 * IM clients: iChat 2.1 and 3.0-3.1.5, AIM 4.7

  [1]: https://knowledge.broadcom.com/external/article/152880/end-of-life-information-for-symantec-enc.html