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FAQ: Create password protected archives

Topics: AES, Twofish, Serpent, cryptography, strong encryption, encrypt files, encrypted archives, password protected archives, set encryption, set password protection, protect zip files, random password generator, password manager.

How to encrypt archive files with PeaZip?

PeaZip is focused on security and supports multiple strong encryption password protected archive files

standards, optionally using two factor authentication (password and keyfile *) for increased security against means like social engineering or dictionary based attacks that can considerably reduce the effort of brute-forcing a textual password or passphrase.
Encryption standards supported by PeaZip are:

7Z's AES256 encryption
ZIP WinZip's AE encryption based on AES256 (and ZipCrypto for legacy compatibility); can decrypt PKZip's AES encryption
FreeARC's ARC: AES256, Blowfish, Twofish256 and Serpent256; this format also supports recovery records to protect data against corruption
PEA: AES256 EAX authenticated encryption

To password protect files within archives, chose an archive type supporting encryption, as ZIP, 7Z, ARC, and PEA, add files to the archive being created as explained in the FAQ page, then click on the locker icon encrypt zip files

to set a password and optionally a keyfile * for the archive - the icon is in the status bar in the file/archive browser, and under the output file name in the archive creation interface.

PeaZip software also provides an encrypted password manager in Tools > Password manager from main menu, in this way a master password can be used to encrypt passwords the user desires to keep saved.
The password manager file is unique for each user on the system using PeaZip, so multiple users can keep multiple separated password lists.

Some archive types, like 7Z and ARC, support encrypting the names of files being added to the archive: in this case it will not even be possible to see the list of archive's content, file and directory names, without knowing the password.
7Z, ARC, and ZIP archives support file level encryption, so each file in an archive could have, if desired by the archive creator, a different password.

In "Advanced" tab of archive creation interface users can chose encryption method to apply to the archive: by default the recommended method will be displayed.
If a password is already set (i.e. because adding files to an already encrypted existing archive) it will be reported to the user in the archive creation interface.

For increased security, PeaZip supports secure file deletion to erase tracks of unwanted data.

* PeaZip has an integrated utility to create random keyfiles and passwords sampling entropy from the system and from user's interaction.

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