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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<meta content="text/html; charset=ISO-8859-1"
http-equiv="content-type">
<meta name="AUTHOR" content="PeaZip Free Archiver Utility">
<meta name="DESCRIPTION"
content="How to encrypt 7Z PEA RAR ZIP files. Use PeaZip free file encryption software to create encrypted archives, apply AES Twofish Serpent strong cyphers, set password protection.">
<meta name="KEYWORDS"
content="encrypt, password, protected, protection, files, file, encryption, software, AES, Serpent, Twofish, AES256, cryptography, archives, free, create, extract, open, software">
<meta name="ROBOTS" content="all">
<title>Free encryption utility, encrypt 7Z PEA RAR ZIP files</title>
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<meta property="og:site_name"
content="PeaZip file archiver utility, free RAR ZIP software">
<meta property="og:title"
content="Free encryption software, encrypt 7Z PEA RAR ZIP files">
<meta property="og:description"
content="How to encrypt 7Z PEA RAR ZIP files. Use PeaZip free file encryption utility to create encrypted archives, apply AES Twofish Serpent strong cyphers, set password protection.">
<meta property="og:image" content="free-zip/peazip-icon.png">
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<h1 style="text-align: center;"><big><big><big><a
name="free_encryption_software"></a><span style="font-weight: bold;">Free
encryption utility, encrypt
7Z PEA RAR ZIP files</span><br>
</big></big></big></h1>
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<div style="text-align: left; color: rgb(0, 0, 0);">
<ul>
<li>
<p><a href="encrypt-files.html#apply_password">WHAT
IS STRONG FILE ENCRYPTION</a></p>
</li>
<li><a href="#add_password_to_archive">HOW ARE PASSWORDS
MANAGED IN PEAZIP</a><br>
</li>
<li>
<p><a href="encrypt-files.html#encrypt_file">HOW
TO CREATE ENCRYPTED 7Z PEA RAR ZIP ARCHIVES</a></p>
</li>
</ul>
<br>
<br>
<h2><big><big style="font-weight: bold;"><big><a
name="apply_password"></a><a
href="encrypt-files.html#free_encryption_software">What is strong file
encryption</a></big></big><br>
</big></h2>
</div>
<br>
PeaZip is a free file archiver especially focused on security, which
supports reading and writing (encryption and decryption) of many strong
encryption standards,
optionally using 2FA <span style="font-weight: bold;">two factor
authentication</span> (password and keyfile) for increased security
against means like <span style="font-weight: bold;">social engineering</span>
or <span style="font-weight: bold;">dictionary based attacks </span>(that
can considerably reduce the effort of brute-forcing a textual password
or passphrase).<br>
<br>
<h2><img title="Apply password protection to archive files"
src="password.png" alt="how to encrypt 7Z PEA RAR ZIP files"
style="border: 0px solid ; width: 562px; height: 302px;"></h2>
<br>
<br>
<h3 style="font-weight: bold;"><big>Purposes of file
encryption</big></h3>
<br>
<a name="how_to_use_cryptography"></a>Use of end-to-end
cryptography, in which sender and recipient are in
charge of encrypting and decrypting the encoded data, is strongly
recommended
each time sensitive data is sent to (or through) external servers, even
if the
service is advertised implementing cryptography measures.<br>
In example, creating encrypted mail
attachments (and to encrypt uploads to cloud services) preserve
data secrecy against any unauthorized access to user's private
information and data even in case the service is
compromised, either by successful attack, insider breach, or plain
change of policies granting access to unwanted subjects: to <a
href="extract-encrypted-files.html">open and extract the encrypted file</a>
will always require the encryption password to be known.<br>
<br>
<br>
<h3 style="font-weight: bold;"><big><span
style="font-weight: bold;">Encryption algorithms supported by PeaZip</span></big><br>
</h3>
<br>
<h3><a name="encrypt_rar_zip_files"></a>Cryptographic
protocols supported by PeaZip free encryption utility for writing
(creating password protected archives) are:</h3>
<ul>
<li>7Z</li>
<ul>
<li>
<h3>7-Zip / p7zip
AES256-based encryption</h3>
</li>
</ul>
<li>ZIP / ZIPX<br>
</li>
<ul>
<li>
<h3>WinZip AE (Advanced
Encryption), AES256-based</h3>
</li>
</ul>
<ul>
<li>ZipCrypto, for
legacy compatibility purpose only as the algorithm is considered weak
under today's standards, not recommended to protect sensitive data<br>
</li>
</ul>
<li>ARC<br>
</li>
<ul>
<li>FreeARC ARC format implementing
encryption scheme that supports AES256, AES contest finalists
Twofish256 and Serpent256 algorithms, and classic Blowfish algorithm</li>
</ul>
<li><a href="pea-file-format.html">PEA</a></li>
<ul>
<li>PeaZip's native .pea file format,
supporting AES, Serpent and Twofish (128 and 256 bit) EAX-mode
authenticated encryption, enforcing
cryptographically strong data secrecy and verifiable autenticity. Also,
PEA format can use cascaded AES, Serpent and Twofish - all the data
will be encrypted and authenticated by all the trhree cyphers.<br>
</li>
</ul>
<li>RAR, if WinRar is installed in the system<br>
</li>
<ul>
<li>RAR4 AES128-based encryption</li>
<li>RAR5 AES256-based encryption</li>
</ul>
<li>ZPAQ</li>
<ul>
<li>ZPAQ AES256-based encryption<br>
</li>
</ul>
</ul>
PeaZip free encryption utility supports (read-only) decryption of ACE
archives.<br>
<br>
Read more about data encryption: <a target="_blank"
href="http://www.nist.gov/information-technology-portal.cfm">NIST
Information Technology Portal<img
title="National Institute of Standard and Technologies"
alt="nist cryptography" src="free-rar/extractor.png"
style="border: 0px solid ; width: 12px; height: 10px;"></a>, <a
href="https://eprint.iacr.org/curr/">IACR Cryptology archive<img
title="International Association for Cryptologic Research"
alt="iacr cryptology" src="free-rar/extractor.png"
style="border: 0px solid ; width: 12px; height: 10px;"></a>, Wikipedia
entry for <a target="_blank"
href="http://en.wikipedia.org/wiki/Encryption">encryption<img
title="Encryption on Wikipedia" alt="cryptography wiki"
src="free-rar/extractor.png"
style="border: 0px solid ; width: 12px; height: 10px;"></a>,
view description of Advanced Encryption Standard finalists: Rijndael/<a
target="_blank"
href="http://en.wikipedia.org/wiki/Advanced_Encryption_Standard">AES<img
title="cryptographers Joan Daemen, Vincent Rijmen"
alt="wikipedia aes128" src="free-rar/extractor.png"
style="border: 0px solid ; width: 12px; height: 10px;"></a>, <a
target="_blank" href="https://www.schneier.com/twofish.html">Twofish<img
title="cryptographer Bruce Schneier" alt="twofish cipher"
src="free-rar/extractor.png"
style="border: 0px solid ; width: 12px; height: 10px;"></a>, and <a
target="_blank"
href="http://en.wikipedia.org/wiki/Serpent_%28cipher%29">Serpent<img
title="cryptographers Ross Anderson, Eli Biham, Lars Knudsen"
alt="Serpent cipher" src="free-rar/extractor.png"
style="border: 0px solid ; width: 12px; height: 10px;"></a> ciphers.<br>
<br>
Read about how quantum computing would likely affect symmetric key
encryption algorithms employed in PeaZip, under current understandings
of quantum computing technology, on <a
href="quantum-computing-cryptography.html">Post-quantum computing
cryptography analysis</a> <br>
<br>
<br>
<br>
<h2><big style="font-weight: bold;"><big><big><a
name="add_password_to_archive"></a></big></big></big><a
href="encrypt-files.html#free_encryption_software"><big
style="font-weight: bold;"><big><big>How are passwords managed in
PeaZip</big></big></big></a> <br>
</h2>
<br>
<br>
<big><span style="font-weight: bold;">How are passwords
handled in PeaZip</span></big><br>
<br>
Passwords are entered in PeaZip and kept only for the current session
of the app - until the app is closed..<br>
Unchecking option “Keep password for the current session” (in password
prompt) is more restrictive as it resets the password each time a new
archive is opened.<br>
Passwords are kept in memory, unless the system decides to save app’s
memory in a paging file - preventing this is beyond the possibility of
the app.<br>
<br>
By default passwords are then sent, ephemerally, to the backend
binaries (handling each specific archive format) <span
style="font-weight: bold;">stdin of the process</span>, without
sending them as command line parameters.<br>
This is safer because sending passwords as command line parameters
makes them visible, and logged, in the user’s process table and
possibly console history, which (depending on the host system
configuration) may not met the security requirements desired by the
user.<br>
<br>
Exceptions where the password is sent as command line parameter<br>
<ul>
<li>If it is not possible to use stdin input for the
target backend binary</li>
<ul>
<li>This exception does apply to FreeArc, Pea, and
Zpaq, legacy UnACE and UnRar5 plugins, and custom arbitrary binaries</li>
<li>This exception does NOT apply to 7z/p7zip (7Z, 7Z
sfx, ZIP, ZIPX, RAR extraction) and WinRar (external, RAR compression)</li>
</ul>
<li>Always when using Console mode or GUI+Console mode
option (Settings, Advanced tab Backend binaries option group),</li>
<li>Always when saving the task as command line script
(Console tab in extraction and archiving screens). In this case it is
also needed to securely handle the saved script file in order to not
make it accessible to attackers.</li>
</ul>
<br>
“<span style="font-weight: bold;">Force typing password interactively</span>”
option (in password dialog) disables entering password in PeaZip app so
password are never in app’s memory for any time, nor passed to backend
binaries by any means - please note this will also disable browsing
archives with encrypted TOC from PeaZip’s file browser.<br>
When this option is checked <span style="font-weight: bold;">passwords
are directly typed in each backend binary</span> - for any backend
binary, and overriding any other PeaZip setting.<br>
This mode can also be used to work with binaries that, for any reason,
would not work with PeaZip passing password through pipes.<br>
<br>
Console scripts generated with this option checked will require to
interactively type passwords, and will never result in having passwords
saved in them.<br>
<br>
Limitations: <br>
<ul>
<li>In this mode it is not possible to browse <a
href="encrypt-filenames.html">archives with encrypted TOC</a><br>
</li>
<li>Zpaq backend does not accept password interactively,
in this case password will not be asked nor passed in any way</li>
</ul>
<br>
<br>
<big><span style="font-weight: bold;">Characters allowed in
passwords</span></big><br>
<br>
All characters are allowed in passwords, and <span
style="font-weight: bold;">it is strongly recommended to mix
uppercase, lowercase, numbers and symbols</span>, alongside <span
style="font-weight: bold;">relying on long password / passphrases
which cannot be trivially linked to the user by social engineering, nor
likely to be recovered with a dictionary attack</span>.<br>
However as extra safety measure PeaZip checks the password field to
avoid using quote character(s: this would make more difficult to check
exported scripts (from Console tab in extraction and archiving screens)
to detect if special characters in the password are correctly and
safely escaped.<br>
On Windows the warning is issued if “ double quote character is used,
on non-Windows systems only if both ‘ single quote and “ double quote
characters are used.<br>
“Force typing password interactively” option (in password dialog)
disables this check so any character can be used.<br>
<br>
<br>
<br style="font-weight: bold;">
<h2><big style="font-weight: bold;"><big><big><a
name="encrypt_file"></a></big></big></big><a
href="encrypt-files.html#free_encryption_software"><big
style="font-weight: bold;"><big><big>How
to create encrypted 7Z PEA RAR ZIP archives</big></big></big><br>
</a></h2>
<br>
<br>
<h3 style="font-weight: bold;"><big>Create a new encrypted
archive</big></h3>
<br>
<a name="add_password_protection"></a>To create an encrpted
file archive (password protect
files within archives), chose an archive type
supporting encryption, as ZIP, 7Z, ARC, PEA, and ZPAQ, add files to the
archive being created as explained in the FAQ page, then click on the
padlock icon to
set a <span style="font-weight: bold;">password </span>and optionally
a <span style="font-weight: bold;">keyfile</span> 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.<br>
<h2><img title="How to password-protect data"
alt="how to encrypt files" src="rar-files/cryptography.gif"
style="width: 16px; height: 16px;" align="middle"></h2>
<table style="width: 100%; text-align: left;" border="0"
cellpadding="24" cellspacing="0">
<tbody>
<tr>
<td style="width: 48px; vertical-align: middle;">
<h3><img
title="Protect content of files with password"
alt="zip files encryption utility" src="file-format/information.png"
style="width: 48px; height: 48px;"></h3>
</td>
<td style="vertical-align: middle;"><a
name="set_password_to_archive"></a>Please note<span
style="font-weight: bold;"> the password will be
applied to the objects that will be added to the archive in the current
operation</span> - <span style="background-color: rgb(255, 238, 221);">7Z,
ARC, ZIP, and ZIPX archives support </span><span
style="font-weight: bold; background-color: rgb(255, 238, 221);">file
level encryption</span><span
style="background-color: rgb(255, 238, 221);"> (<a
href="multiple-passwords.html">supports mutiple encryption passwords</a>),
so
each file
in an archive could have, if desired by the archive creator, a
different password</span> - so applying a password to an existing
archive will not affect it (will not apply password protection to
already archived files).</td>
</tr>
</tbody>
</table>
<br>
<br>
<h3 style="font-weight: bold;"><big>Encrypt an already
existing archive</big></h3>
<br>
To password-protect an already existing archive you need to extract and
rebuild it, applying the desired password.<br>
<a href="convert-files.html">Archive conversion</a>
interface can help
automating the task.<br>
<table style="width: 100%; text-align: left;" border="0"
cellpadding="24" cellspacing="0">
<tbody>
<tr>
<td
style="vertical-align: top; text-align: right; width: 128px;">
<h2><span style="font-weight: bold;"><img
title="Create random keyfiles" alt="how to use file encryption utility"
src="file-format/quotes.png" style="width: 32px; height: 32px;"></span></h2>
</td>
<td style="vertical-align: top; font-style: italic;"><big><a
name="random_password_generator"></a>PeaZip
provides an integrated utility to <span style="font-weight: bold;">create
random keyfiles and
passwords</span> sampling entropy from the system and from user's
interaction, Crtl+F9 or main applications' menu Tools > Create
random password / keyfile</big><br>
</td>
<td style="vertical-align: bottom; width: 128px;">
<h3><img src="file-format/quotes-inverse.png"
alt="protect files with encryption password"
title="Create random encryption password"
style="width: 32px; height: 32px;"></h3>
</td>
</tr>
</tbody>
</table>
<br>
<h3 style="font-weight: bold;"><big>Manage encryption
passwords</big></h3>
<br>
<a name="encryption_password"></a>PeaZip's <span
style="font-weight: bold;">password manager</span> is
available from main menu, Tools > Password manager.<br>
The password list file is saved in private user's path, allowing each
user to maintain a personal password manager containing different
passwords or passphrases not accessible to other standard users of the
same system.<br>
Optionally, the user can decide to encrypt the password list with a
master password, making the passwor manager private even to
administrative accounts of the same machine, being the data file
unreadable until the correct password is provided.<br>
<br>
<table style="width: 100%; text-align: left;" border="0"
cellpadding="24" cellspacing="0">
<tbody>
<tr>
<td
style="width: 48px; text-align: left; vertical-align: middle;">
<h3><img title="How to set password to archives"
alt="how to create encrypted zip files"
src="file-format/information.png" style="width: 48px; height: 48px;"></h3>
</td>
<td style="text-align: left; vertical-align: middle;"><span
style="background-color: rgb(255, 238, 221);">Some
archive types, like 7Z and ARC, support </span><a
href="encrypt-filenames.html"><span
style="font-weight: bold; background-color: rgb(255, 238, 221);">encrypting
files names</span></a><span
style="background-color: rgb(255, 238, 221);">
of items
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 </span><span style="background-color: rgb(255, 238, 221);">(in
case the very names expose sensitive information)</span><span
style="background-color: rgb(255, 238, 221);">, without knowing the
password. This option is available in
Password dialog - PEA and ZPAQ formats will always encrypt name of
files inside
an encrypted archive.</span></td>
</tr>
</tbody>
</table>
<span style="background-color: rgb(255, 238, 221);"></span><span
style="background-color: rgb(255, 238, 221);"></span><span
style="background-color: rgb(255, 238, 221);"></span>
<div style="text-align: center;">
<div style="text-align: left;"><br>
<h3 style="font-weight: bold;"><big>Encrypt files with two
factor authentication (password and keyfile)<br>
</big></h3>
<br>
<a name="encrypt_with_key_file"></a>PeaZip free encryption
software
supports optional <span style="font-weight: bold;">two factor
authentication</span> (2FA) for any
write-supported archive format (7Z, ARC, PEA, RAR, ZIP) using both a
password (the element you know) and a keyfile (the element you have) to
encrypt the content - it only needs to enter a keyfile in password
dialog when creating the archive.<br>
If a keyfile is set for any
other format than PEA (which has its own way to use keyfile) the SHA256
hash of the file encoded in Base64 (RFC 4648) is prepended to the
password used to build the archive, using standard archive format
encryption mechanism.<br>
This simple password / keyfile combination scheme allows to retain read
compatibility with any other file archiver, even ones not supporting
keyfile parsing (or with different two factor authentication
implementation), simply
passing the Base64-encoded SHA256 hash of the keyfile as the first part
of the password.<br>
<table style="width: 100%; text-align: left;" border="0"
cellpadding="24" cellspacing="0">
<tbody>
<tr>
<td style="width: 48px; vertical-align: middle;">
<h3><img title="How to use two factor authentication"
alt="rar file encryption" src="file-format/note.png"
style="width: 48px; height: 48px;"></h3>
</td>
<td style="vertical-align: middle;"><span
style="background-color: rgb(255, 238, 221);"></span> <span
style="background-color: rgb(255, 238, 221);">KNOWN LIMITATION: two
factor authentication (2FA) is not available for <a
href="self-extracting-archives.html">self-extracting archives</a>
(which can be built with 7Z or ARC compression), because usage of
keyfile is not supported by available SFX modules - otherwise resulting
executables would be unable to exctract themselves. When a
self-extracting archive is created, only the password (if provided)
will be used for encrypting it, and only the password will be needed to
extract & decrypt it.<br>
</span></td>
</tr>
</tbody>
</table>
</div>
</div>
<br>
<h3 style="font-weight: bold;"><big>Chose the encryption
algorithm</big></h3>
<br>
<a name="chose_encryption_algorithm"></a>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.<br>
<br>
<div style="text-align: left;">For
increased security, PeaZip file manager supports <a
href="secure-delete.html">secure
file deletion</a> to erase tracks of
unwanted data.<br>
<h3><img title="How to use secure delete function"
alt="encrypt files" src="secure-delete.png"
style="width: 146px; height: 45px;"></h3>
</div>
<br>
Read more about how to <a href="7zip-files-utility.html">create
encrypted 7Z archives</a>, <a href="pea-archiving-utility.html">encrypt
PEA archives</a> with AES, Twofish, or Serpent, <a
href="free-rar-create.html">create password protected RAR files</a>
with PeaZip if WinZip in featured on the same machine, <a
href="zip-files-utility.html">encrypt ZIP files</a>, <a
href="paq-files-compression-utility.html">create encypted ZPAQ archives</a>.<br>
<br>
<p><span style="font-weight: bold;">Synopsis: How to
encrypt 7Z PEA RAR ZIP files. Use PeaZip free file encryption utility
to create encrypted archives, apply AES Twofish Serpent strrong
cyphers. What is strong file encryption meaning. How to
set password protection to archive files.<br>
</span></p>
<p><span style="font-weight: bold;">Topics: what is strong
encryption, how to encrypt files, create encrypted archives with PeaZip</span><br>
<span style="font-weight: bold;"></span><span
style="font-weight: bold;"></span></p>
<p><span style="font-weight: bold;">PeaZip > FAQ
> Free encryption software, encrypt 7Z PEA RAR ZIP files<br>
</span></p>
<table
style="background-color: rgb(240, 240, 240); width: 100%; text-align: left;"
border="0" cellpadding="24" cellspacing="1">
<tbody>
<tr>
<td colspan="1" rowspan="1"
style="vertical-align: top; background-color: rgb(250, 250, 250);">
<h3><img title="Security FAQ"
alt="how to set encryption password" src="file-format/security.png"
style="width: 96px; height: 96px;" align="right"><a
name="how_to_protect_data"></a>SECURITY</h3>
<p style="font-weight: bold;"><a
href="antivirus-scan-zipped-files.html">Antivirus scan compressed files</a><br>
</p>
<p><a href="multiple-passwords.html"><span
style="font-weight: bold;">Archives with multiple passwords</span></a><br>
</p>
<p style="font-weight: bold;"><a
href="encrypt-filenames.html">Encrypt list of filenames inside an
archive</a><br>
</p>
<p><a href="backup-files.html"><span
style="font-weight: bold;">How to backup files and folders?</span></a><br>
</p>
<p><a href="change-password.html"><span
style="font-weight: bold;">How to change password for existing archive?</span></a><br>
</p>
<p> </p>
<p style="font-weight: bold;"> </p>
<p><a style="font-weight: bold;"
href="encrypt-files.html">How to encrypt
archives?</a> </p>
<p><a style="font-weight: bold;"
href="extract-encrypted-files.html">How to
extract
encrypted archives?</a> </p>
<p><a style="font-weight: bold;"
href="protect-files.html">How
to protect files
with PeaZip?</a> </p>
<p><a style="font-weight: bold;"
href="secure-delete.html">How to securely
delete files, folders, and free space?</a><br>
</p>
<p><a style="font-weight: bold;"
href="share-files-sharing.html">How to securely share files?</a><br>
</p>
<p><a style="font-weight: bold;"
href="quantum-computing-cryptography.html">Post-quantum computing
cryptanalysis</a><br>
</p>
</td>
</tr>
</tbody>
</table>
</td>
</tr>
</tbody>
</table>
<br>
</td>
</tr>
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<td style="vertical-align: top; width: 25%;"><small> <img
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style="width: 129px; height: 2px;"><br>
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