It also slightly simpler to check passwords for zip, since many tools are focused on that compared to 7z. If 128-bit is used, it's less secure, but a little faster. When using AES WinZIP can use both 128-bit and 256-bit. zip purpose, since Windows by itself will not be able to extract it. Using WinZIP with AES defeats the initial.

Do not rely on Zip 2.0 encryption to provide strong data security. But that method provides low security level. WinZip offers two kinds of encryption: AES encryption (It's good, but windows doesn't support it.) and weak Zip 2.0 (Legacy) encryption, which is the old method. For details on AES encryption method, please refer to from Wikipedia.7-zip uses AES-256 for 7z archives, the strongest version of AES.In particular, encrypted files can be deleted from a Zip file, or renamed within a Zip file while new, unencrypted files can be added to a Zip file without a password.7-Zip 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.To open the file, you will need to provide the password. Now the file is encrypted with password.Then enter your password (We highly recommend to set password with more than 8 characters which consists of alphabets and numbers), and choose the 'Encryption method' you prefer. Make sure to choose ' zip' for the archive format.Then right click the selection and choose ' 7-Zip' -> ' Add to archive.' from the menu. Select the file(s) you need to compress.To setup a password for ZIP file, please follow the steps below (screen capture based on 7-Zip): The contents of the files that you want to protect are encrypted based on a password that you specify. 7-Zip's encryption facility protects sensitive documents from unauthorized viewing.

7 zip encryption