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Encryption and passwords
Set passwords and AES-256 encryption for supported formats and follow password-safety guidance.
- 01
Choose a format
7Z supports AES-256 and filename encryption; confirm ZIP AES compatibility with recipients.
- 02
Create a strong password
Use at least 12 random characters or a longer passphrase and avoid reuse.
- 03
Configure encryption
Select the algorithm and enable filename encryption when names must remain private.
- 04
Test compatibility
Close and reopen the result, then test on the intended receiving device.
- 05
Separate delivery channels
Do not send the archive and its password in the same message or channel.
- 06
Store the password safely
Strong encryption has no universal backdoor; recovery can be slow and is never guaranteed.