Sure, WinZip is ideal for compressing files and folders but did you know it’s also an excellent means for encrypting sensitive data? Use WinZip correctly, and it is a very useful security tool. It’s a perfect option for the non-technical user who needs to email confidential data over the Internet. Just follow my simple step-by-step below to learn how.
My screen snips below are from Windows XP and WinZip 11.1. However, the process should be the same for Vista and Winzip 10.x users as well. WinZip 9.0 was the first version of WinZip that began using AES 256 bit encryption, so 9.x users should also be able to take advantage of using WinZip as an encryption tool.
So, let’s get right to it.
1. Navigate to the files or folder you wish to Zip and Encrypt
2. Select the files you want to zip/compress and encrypt, Right-Click to bring up the context menus. Now under the context menus, Click WinZip, Add to Zip file
3. Click in the Add to archive box and give the file a name. Check box Encrypt added files and Click Add
4. Check box Do not display this dialog box in the future and Click OK
Now we’re ready to enter a password. Please note – It’s crucial to use a STRONG password here. Yeah yeah yeah… you don’t need to get crazy here with stupid $ymb0l$ and upper and lower case characters that you will forget 10 minutes after you type it. Just use a long PASSPHRASE with 10 or more characters. Passphrases are EASY to type, easy to remember AND VERY secure. Watch, here’s a 20 character secure password: My house is yellow!
That’s it! With spaces between the words, a capital M in the front and ended with a special character, you’re looking at a VERY secure password which will be near to impossible to crack using brute-force!
Ok, back to this article…
5. Click in the box Enter password and type your PW. Repeat in the following box. Click 256-Bit AES encryption (stronger) radio button and Click OK
6. Review and Close by Pressing the Red X
Note: As you open .zip files, encrypted files can be identified by the * symbol next to the file name as shown below
All done! GROOVY!
Limitations to be aware of (Taken from WinZip HELP file).
- Encryption applies only to the contents of files stored within a Zip file. Information about an encrypted file, such as its name, date, size, attributes, and compression ratio, is stored in unencrypted form in the Zip file’s directory and can be viewed, without a password, by anyone who has access to the Zip file.
- WinZip’s encryption method is not the same thing as an authentication method for the Zip file. WinZip encryption is intended to prevent someone who doesn’t know the correct password from finding out the contents of your encrypted data. For actions that do not involve decryption of the encrypted contents of data stored in a Zip file, no password is necessary. In particular, encrypted files can be deleted from a Zip file, or renamed within a Zip file. No password is needed to add new, unencrypted files to a Zip file.
- WinZip uses password-based encryption, and even a strong encryption algorithm like AES is of little or no benefit if the passwords you use are weak, or you do not keep track of them in a secure manner.