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extract-encrypted-files.html
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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="Free encrypted files opener, extractor. Work with 7Z ARC RAR ZIP files. How to decrypt AES Twofish Serpent encryption standards. Password-protected archives extraction utility.">
<meta name="KEYWORDS"
content="encrypted, password, extract, open, extraction, extractor, opener, how to, decrypt, read, zip, rar, files, file, aes, aes256, free, archives, software, utility, tool, protected">
<meta name="ROBOTS" content="all">
<title>Open, decrypt, extract encrypted 7Z RAR ZIP files</title>
<meta name="viewport" content="width=device-width">
<meta property="og:site_name"
content="PeaZip file archiver utility, free RAR ZIP software">
<meta property="og:title"
content="Open, decrypt, extract encrypted 7Z RAR ZIP files">
<meta property="og:description"
content="Free encrypted files opener, extractor. Work with 7Z ARC RAR ZIP files. How to decrypt AES Twofish Serpent encryption standards. Password-protected archives extraction utility.">
<meta property="og:image" content="free-zip/peazip-icon.png">
<meta property="og:url"
content="https://peazip.github.io/extract-encrypted-files.html">
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<h1 style="text-align: center; font-weight: bold;"><big><big><big><a
name="decrypt_file_with_password"></a>Open, decrypt, extract encrypted
7Z
RAR ZIP files</big></big></big></h1>
<br>
</td>
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style="vertical-align: top; background-color: rgb(240, 239, 238);"><img
alt="How to decrypt AES Twofish Serpent encryption standards"
src="free-rar/file-compressor.png" style="width: 2px; height: 2px;"><br>
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border="0" cellpadding="48" cellspacing="0">
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<td
style="background-color: rgb(255, 255, 255); vertical-align: top;">
<div style="text-align: left; color: rgb(0, 0, 0);">
<ul>
<li>
<p><a
href="extract-encrypted-files.html#password_protected_archive">SUPPORTED
ENCRYPTION STANDARDS</a></p>
</li>
<li>
<p><a
href="extract-encrypted-files.html#unlock_password">HOW TO EXTRACT
FILES
FROM PASSWORD PROTECTED ARCHIVES</a></p>
</li>
</ul>
<br>
<br>
<h2><big><big style="font-weight: bold;"><big><a
name="password_protected_archive"></a><a
href="extract-encrypted-files.html#decrypt_file_with_password">Supported
encryption standards</a></big></big><br>
</big></h2>
</div>
<br>
PeaZip is focused on security and supports handling multiple <a
href="encrypt-files.html">strong file encryption</a>
standards for the archive formats implementing cryptography by design:<br>
<br>
<table style="width: 100%; text-align: left;" border="0"
cellpadding="0" cellspacing="0">
<tbody>
<tr>
<td style="vertical-align: top; width: 448px;">
<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 style="font-weight: bold;"><big>Full
encryption / decryption support</big></h3>
<h3><span style="font-weight: bold;"></span></h3>
<span style="font-weight: bold;"> <br>
</span>
<h4><span style="font-weight: bold;">7Z</span></h4>
<h4>7-Zip 7Z AES-256 encryption</h4>
<br>
<h4><span style="font-weight: bold;">ARC</span></h4>
<span style="font-weight: bold;"></span>FreeARC
ARC AES-256, Blowfish, Serpent-256,
and Twofish-256<br>
This format also supports recovery records to protect data
against corruption<br>
<br>
<h4><span style="font-weight: bold;">PEA</span></h4>
<h4>PEA AES-256, Serpent-256,
and Twofish-256 in
EAX mode (authenticated encryption), optionally cascaded
multiple-algorithm encryption combining AES, Serpent and Twofish.<br>
</h4>
<br>
<h4><span style="font-weight: bold;">ZIP</span></h4>
<h4>WinZip AE, based on AES-256</h4>
ZipCrypto (for legacy
compatibility only, not recommended for protecting sensitive data in a
modern
security scenario)<br>
<br>
<h4><span style="font-weight: bold;">ZPAQ</span></h4>
ZPAQ AES-256 encryption<br>
<span style="font-weight: bold;"></span></td>
</tr>
</tbody>
</table>
</td>
<td style="vertical-align: top; width: 24px;"><br>
</td>
<td style="vertical-align: top; width: 448px;">
<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><big><span style="font-weight: bold;">Read,
decryption only</span></big></h3>
<h4><span style="font-weight: bold;"></span></h4>
<span style="font-weight: bold;"> <br>
</span>
<h4><span style="font-weight: bold;">ACE</span></h4>
<span style="font-weight: bold;"> </span>
<h4>WinAce ACE
Blowfish-based encryption (requires optional plugin)<br>
</h4>
<span style="font-weight: bold;"><br>
</span>
<h4><span style="font-weight: bold;">RAR</span></h4>
<h3><span style="font-weight: bold;"></span></h3>
<span style="font-weight: bold;"> </span>
<h4>RAR4
AES-128 encryption</h4>
<h4>RAR5 AES-256 algorithm in CBC mode</h4>
<span style="font-weight: bold;"> </span> <br>
<span style="font-weight: bold;">ZIP</span>
<h4><span style="font-weight: bold;"></span>PKZip's
ZIP AES encryption standard</h4>
<br>
<h4><span style="font-weight: bold;">ZIPX</span></h4>
<h4>WinZip AE ZIPX, based on AES-256</h4>
(while encryption method is fully supported, the archive format itself
is supported read-only so PeaZip can handle it only as opener /
extractor)<br>
<span style="font-weight: bold;"></span></td>
</tr>
</tbody>
</table>
<br>
</td>
</tr>
</tbody>
</table>
<br>
View more information about cryptography standards implemented in
popular
archive formats: <a target="_blank" href="http://www.7-zip.org/7z.html">7-Zip
7z format
specifications<img alt="encrypted .7z file" title="7Z AES"
src="free-rar/extractor.png"
style="border: 0px solid ; width: 12px; height: 10px;"></a>, <a
target="_blank" href="http://www.winzip.com/aes_info.htm">WinZip AE
encryption<img alt="zip advanced encryption standard"
title="WinZip AES encryption" src="free-rar/extractor.png"
style="border: 0px solid ; width: 12px; height: 10px;"></a>, <a
target="_blank"
href="https://www.pkware.com/software/pkzip/server/technical-specs">PKZip
AES encryption<img alt="encrypted zip file"
title="PKWare encryption tool" src="free-rar/extractor.png"
style="border: 0px solid ; width: 12px; height: 10px;"></a><br>
<table style="width: 100%; text-align: left;" border="0"
cellpadding="24" cellspacing="0">
<tbody>
<tr>
<td
style="text-align: right; vertical-align: middle; width: 64px;">
<h2><span style="font-weight: bold;"><img
title="Free archiver and encryption utility"
alt="open encrypted rar zip files" src="file-format/note.png"
style="width: 48px; height: 48px;"><br>
</span></h2>
</td>
<td
style="font-style: italic; vertical-align: middle;"><big><span
style="font-style: italic;">Hint: o</span><span
style="font-style: italic;">fficial PeaZip packages NEVER
ask users a password to be installed or to run: if that happens please
don't
trust that package and rely only on official packages published on
official PeaZip domain, and official mirrors.<br>
</span></big></td>
</tr>
</tbody>
</table>
<br>
<br>
<h2><big style="font-weight: bold;"><big><big><a
name="unlock_password"></a></big></big></big><a
href="extract-encrypted-files.html#decrypt_file_with_password"><big
style="font-weight: bold;"><big><big>How
to extract files
from
password protected archives</big></big></big><br>
</a></h2>
<br>
<br>
<h3 style="font-weight: bold;"><big>Extract encrypted
archives</big><br>
</h3>
<br>
<a name="extract_encrypted_archive"></a>To extract a
password
protected archive open it with PeaZip (double click if it is a
supported file extension) to read and navigate / search its content,
then
use Extract button in application's toolbar.<br>
Otherwise, use "Extract" entries in context menu for direct extraction
of the encrypted file
without browsing / displaying the content of the encrypted archive.<br>
<h2><img title="Extract encrypted 7z, rar, zip files"
alt="free encrypted files extraction utility" src="extract-archive.png"
style="width: 112px; height: 45px;"></h2>
<br>
<h2><img title="How to extract encrypted archives"
alt="extract encrypted rar zip files" src="password.png"
style="width: 562px; height: 302px;" align="right"></h2>
<a name="open_encrypted_files"></a>If a password is needed
for
extraction (or browsing, if <a href="encrypt-filenames.html">archive
TOC (table of content, list of names of files) is encrypted</a>) PeaZip
will prompt a form to enter
the
password or passphrase - and
optionally a keyfile, if two
factor authentication is in use.<br>
<br>
<br>
<big><span style="font-weight: bold;">Browse encrypted
archives</span></big><br>
<br>
Some archive types, like <a href="7z-file-format.html">7Z format</a>, <a
href="arc-files-utility.html">ARC format</a> and <a
href="what-is-rar-file.html">RAR format</a>, supports encrypting the
list of files and folders contained in the archive (option usually
identified as "<span style="font-weight: bold;">encrypt file names</span>"),
to protect this
information from unauthorized users, so the password will be required
even for listing / browsing the archive - without providing
correct password the archive TOC will not be decrypted and will not be
visible, disallowing archive browsing / searching.<br>
In other cases, when the TOC of archive is not encrypted, it is
possible to browse the password protected archive,
but the password will be required to extract the encrypted data; in
PeaZip's
file / archive browser you can enter the password clicking the proper
context menu entry or clicking on the locker icon in the status bar or
pressing F9.<br>
<h3><img title="How to read encrypted files"
alt="open password protected rar zip files"
src="rar-files/cryptography.gif" style="width: 16px; height: 16px;"
align="middle"></h3>
<br>
<br>
<h3 style="font-weight: bold;"><big>How to work with
archives which cannot be decrypted</big><br>
</h3>
<br>
<span style="background-color: rgb(255, 238, 221);"><a
name="read_password_protected_file"></a>Current
revisions of mainstream archive formats like (7Z, ARC, PEA,
RAR, and ZIP/ZIPX) uses strong file encryption, and it is unlikely to
be
possible to brute-force it with any kind of utility if the password is
unknown or was forgotten.</span><br>
<table style="width: 100%; text-align: left;" border="0"
cellpadding="24" cellspacing="0">
<tbody>
<tr>
<td style="width: 48px; vertical-align: middle;">
<h2><img title="How to extract encrypted archives"
alt="extract encrypted archive" src="file-format/information.png"
style="width: 48px; height: 48px;"></h2>
</td>
<td style="vertical-align: middle;"><a
name="extract_encrypted_archives"></a>Some archive types such as 7Z,
ARC, RAR, and ZIP, allows to use <a href="multiple-passwords.html"><span
style="font-weight: bold;">multiple
passwords in the same archive</span></a>, and even to <span
style="font-weight: bold;">mix encrypted and unencrypted content</span>,
because encryption is applied at level of each single file inside the
archive - each file can be theoretically encrypted with a different
password.<br>
This means that providing a password it may be possible to extract only
the part of the archive protected by that password, and to access other
files different password may be needed.<br>
Using test function with different passwords can help identifying which
files can be correctly decripted with the given password.<br>
</td>
</tr>
</tbody>
</table>
<span style="font-style: italic;"></span><span
style="font-style: italic;"></span><a
name="free_encrypted_files_extraction_utility"></a>In some cases
PeaZip may not
able to view and browse archive's content not because it is encoded but
<a href="peazip-password.html">because
it is
corrupted or was created out of standard</a>: <span
style="font-weight: bold;">in all
those cases PeaZip
will always display the password dialog, to let the user in control of
choosing if entering a password
for trying to decrypt the archive</span>, even if the <a
href="https://en.wikipedia.org/wiki/Filename_extension">file extension<img
title="what is filename extension" alt="encrypted file formats"
src="free-rar/extractor.png"
style="border: 0px solid ; width: 12px; height: 10px;"></a> is
not
usually associated with archives supporting encryption, as file
extension can be
easily changed.<br>
If you got a corrupted archive you will need to
re-download it from a trusted source or restore it from a backup copy.<span
style="font-style: italic;"></span><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;">
<h3><span style="font-weight: bold;"><img
title="Batch extraction of encrypted archives"
alt="extract password protected rar zip files"
src="file-format/quotes.png" style="width: 32px; height: 32px;"></span></h3>
</td>
<td style="vertical-align: top; font-style: italic;"><big><span
style="font-style: italic;"><a name="read_encrypted_file"></a>If you
have to work on different
archives with the same password you will not need to re-enter it since
it will be kept until you change it or close PeaZip. If you open
different instances of PeaZip each will start with no password and can
keep a different password.</span></big></td>
<td style="vertical-align: bottom; width: 128px;">
<h3><img title="Open encrypted archives with password"
alt="decrypt password protected rar zip files"
src="file-format/quotes-inverse.png" style="width: 32px; height: 32px;"></h3>
</td>
</tr>
</tbody>
</table>
<br>
<h3 style="font-weight: bold;"><big>Decrypt files protected
with two factor authentication (password and keyfile)</big></h3>
<br>
<a name="encrypted_rar_zip_files_extractor"></a>PeaZip,
unlike most other file archivers, supports <span
style="font-weight: bold;">optional two factor authentication</span>,
requiring a password <span style="font-style: italic;">and </span>a
keyfile to decrypt an encrypted archive built using that option -
simply setting a keyfile in the 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 keyfile, encoded in Base64
(RFC 4648), will be prepended to the password: this convention allows
to open archives built with two factor authentication with any third
parts archiver simply passing the Base64-encoded SHA256 hash of the
keyfile as the first part of the password.<br>
<br>
<br>
<h4 style="font-weight: bold;"><big>How to use PeaZip
password manager to memorize passwords</big></h4>
<br>
<span style="font-style: italic;"> </span> PeaZip also
provides an <span style="font-weight: bold;">encrypted
password manager</span> 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.<br>
The password manager file is unique for each user on the system using
PeaZip, so multiple users can keep multiple separated password lists.<br>
<br>
Learn more about how to open and <a href="7zip-files-utility.html">extract
encrypted 7Z files</a>, <a href="free-rar.html">extract encrypted RAR
files</a> (no additional software required), or to <a
href="zip-files-utility.html">extract encrypted ZIP files</a>.<br>
<br>
Read more on Wikipedia pages about <a target="_blank"
href="http://en.wikipedia.org/wiki/Encryption">encryption<img
title="Read encrypted data" alt="open encrypted files"
src="free-rar/extractor.png"
style="border: 0px solid ; width: 12px; height: 10px;"></a> and <a
target="_blank"
href="http://en.wikipedia.org/wiki/Two_factor_authentication">two
factor authentication<img title="password and keyfile"
alt="2fa Wikipedia" src="free-rar/extractor.png"
style="border: 0px solid ; width: 12px; height: 10px;"></a><br>
<br>
<p><span style="font-weight: bold;">Synopsis: Supported
encryption standards in PeaZip free encrypted files opener, extractor
software. Work with 7Z ARC RAR ZIP files. How to decrypt AES Twofish
Serpent
encryption standards. Freeware password-protected archives extraction
utility.<br>
</span></p>
<p><span style="font-weight: bold;">Topics: decryption,
open encrypted files, extract password-protected 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
> Open, decrypt, extract encrypted 7Z 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="open encrypted files" 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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style="vertical-align: top; background-color: rgb(243, 242, 241);">
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<td style="vertical-align: top; width: 25%;"><small> <img
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