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I have to create a WinZip compatible zip file from a PHP application on a linux box, and it must use AES 256 encryption. I have found a few solutions for PHP on Windows, but they don't help me! A PHP package would be great, but if I need to, I can always have my PHP code run exec() or something to run a linux command line utility.
Any suggestions?
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Encrypted Email message msg file inside the Zip file, then that can be opened in Outlook. The receiver doesn't need WinZip Courier, but if they have this latest version or newer, a button is provided to open the message after you have type in the password, making it much more convenient.
WinZip supports AES encryption in two strengths, 128-bit AES and 256-bit AES. The different numbers refer to the size of the encryption key that protects your files. A larger number has greater security, but in reality – if someone could crack a 128-bit AES encryption, they could also crack 256-bit AES.
Not php-specific (this question is highly ranked in google also without php): 7-Zip implements this feature, in my documentation I found this command:
7za a -tzip -pPASSWORD -mem=AES256 target.zip filelist
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