Typically you encrypt files because you don't want others to see them, but sometimes you want to send someone an encrypted file.
Most if not all encryption programs allow you to do so--they vary, however, in terms of how difficult the process is.
Advanced Encryption Package 2007 Professional is a program that has the ability to work with .zip archives.
AEP PRO's most noteworthy feature may be its flexibility: Not only can you encrypt files for your own protection but you can easily create "self-decrypting" versions of your files that others can run without needing AEP PRO or any other software.
Advanced Encryption Package includes a file shredder that wipes the contents of your original files. It also integrates nicely with Windows Explorer, allowing you to use Explorer's context menus and avoid having another window clutter your screen. It also uses military grade encryption for protecting your private files.

· Using 17 symmetric encryption algorithms to encrypt your data: DESX, BLOWFISH, RIJNDAEL(AES), CAST, 3-DES, RC2, DIAMOND2, TEA, SAFER, 3-WAY, GOST, SHARK, SQUARE, SKIPJACK, TWOFISH, MARS, SERPENT.
· Making self-extracting encrypted executable files to send it via e-mail to people who do not have AEP
· Built in file shredder - i.e. wiping the contents of the original pre-encrypted file beyond recovery to make sure that not even a trace remains after shredding. matching and exceeding the specifications of the U.S. Department of Defence) to stop hardware recovery tools.
· Support for USB Flash Drives to store encryption keys. All your secret passwords are always with you in your pocket. All passwords on flash drive can be protected by single Master Password (you keep it in your mind).
· Ability to send encrypted files and selfextractors via email (MAPI)
· Ability to encrypt text to send it via your favourite e-mail program like Outlook Express, Eudora, ICQ and etc
· Integrating with Windows (TM) Explorer. I.e. ability to encrypt/decrypt/shred files directly from Explorer context menu
· Built-in data compressor to reduce a size of encrypted files.
· Complete ZIP archives support (creating .zip archives, extracting ZIP contents)
· Complete command line interface support
· Skins support! And 12+ nice-looking skins for program.
· User-Friendly easy-to-understand Graphical interface designed to hide the complexities of encryption technology from the end user.

Requirements:
· Pentium 166 based IBM PC compatible computer (or higher)
· 32 Mb of free memory
· About 1900 Kb free disk space
· A mouse

Limitations:
· 30 days trial
· Nag screen

What's New in This Release:
· Sfx module. The flag "delete this sfx file after decryption" now works fine when
· the module is located in the directory with white spaces in the name.