privacyguides.org/i18n/pt-BR/encryption.md

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---
title: "Softwares de Criptografia"
icon: material/file-lock
description: A criptografia de dados é a única maneira de controlar quem pode acessá-los. These tools allow you to encrypt your emails and any other files.
---
A criptografia de dados é a única maneira de controlar quem pode acessá-los. Se você atualmente não está usando “software” de criptografia para seu disco rígido, e-mails ou arquivos, você deve escolher uma opção aqui.
## Aplicativos multiplataforma
As opções listadas aqui suportam múltiplas plataformas e são ótimas para criar backups criptografados de seus dados.
### Cryptomator (Nuvem)
!!! recommendation
![Cryptomator logo](assets/img/encryption-software/cryptomator.svg){ align=right }
**Cryptomator** é uma solução de criptografia projetada para salvar arquivos de forma privada em qualquer provedor de nuvem. Ele permite que você crie cofres armazenados em uma unidade virtual (virtual disk), cujo conteúdo é criptografado e sincronizado com seu provedor de armazenamento em nuvem.
[:octicons-home-16: Homepage](https://cryptomator.org){ .md-button .md-button--primary }
[:octicons-eye-16:](https://cryptomator.org/privacy){ .card-link title="Privacy Policy" }
[:octicons-info-16:](https://docs.cryptomator.org/){ .card-link title=Documentation}
[:octicons-code-16:](https://github.com/cryptomator){ .card-link title="Source Code" }
[:octicons-heart-16:](https://cryptomator.org/donate/){ .card-link title=Contribute }
??? downloads
- [:simple-googleplay: Google Play](https://play.google.com/store/apps/details?id=org.cryptomator)
- [:simple-appstore: App Store](https://apps.apple.com/us/app/cryptomator-2/id1560822163)
- [:simple-android: Android](https://cryptomator.org/android)
- [:simple-windows11: Windows](https://cryptomator.org/downloads)
- [:simple-apple: macOS](https://cryptomator.org/downloads)
- [:simple-linux: Linux](https://cryptomator.org/downloads)
- [:simple-flathub: Flathub](https://flathub.org/apps/details/org.cryptomator.Cryptomator)
O Cryptomator usa criptografia AES-256 para criptografar arquivos e nomes de arquivos. O Cryptomator não pode criptografar metadados, como histórico de data/hora de acesso, modificação e criação, nem o número e o tamanho de arquivos e pastas.
Algumas bibliotecas criptográficas do Cryptomator foram [auditadas](https://community.cryptomator.org/t/has-there-been-a-security-review-audit-of-cryptomator/44) pela Cure53. O âmbito das bibliotecas auditadas inclui: [cryptolib](https://github.com/cryptomator/cryptolib), [cryptofs](https://github.com/cryptomator/cryptofs), [siv-mode](https://github.com/cryptomator/siv-mode) e [cryptomator-objc-cryptor](https://github.com/cryptomator/cryptomator-objc-cryptor). A auditoria não se estendeu a [cryptolib-swift](https://github.com/cryptomator/cryptolib-swift), que é uma biblioteca usada pelo Cryptomator para o iOS.
Cryptomator's documentation details its intended [security target](https://docs.cryptomator.org/en/latest/security/security-target/), [security architecture](https://docs.cryptomator.org/en/latest/security/architecture/), and [best practices](https://docs.cryptomator.org/en/latest/security/best-practices/) for use in further detail.
### Picocrypt (Arquivo)
!!! recommendation
![Picocrypt logo](assets/img/encryption-software/picocrypt.svg){ align=right }
**Picocrypt** é uma ferramenta de criptografia pequena e simples que fornece criptografia moderna. O Picocrypt usa a cifra segura XChaCha20 e a função de derivação de chave do Argon2id para fornecer um alto nível de segurança. It uses Go's standard x/crypto modules for its encryption features.
[:octicons-repo-16: Repositório](https://github.com/HACKERALERT/Picocrypt){ .md-button .md-button--primary }
[:octicons-code-16:](https://github.com/HACKERALERT/Picocrypt){ .card-link title="Source Code" }
[:octicons-heart-16:](https://opencollective.com/picocrypt){ .card-link title=Contribuir }
??? downloads
- [:simple-windows11: Windows](https://github.com/HACKERALERT/Picocrypt/releases)
- [:simple-apple: macOS](https://github.com/HACKERALERT/Picocrypt/releases)
- [:simple-linux: Linux](https://github.com/HACKERALERT/Picocrypt/releases)
### VeraCrypt (Disk)
!!! recommendation
![VeraCrypt logo](assets/img/encryption-software/veracrypt.svg#only-light){ align=right }
![VeraCrypt logo](assets/img/encryption-software/veracrypt-dark.svg#only-dark){ align=right }
**VeraCrypt** is a source-available freeware utility used for on-the-fly encryption. It can create a virtual encrypted disk within a file, encrypt a partition, or encrypt the entire storage device with pre-boot authentication.
[:octicons-home-16: Homepage](https://veracrypt.fr){ .md-button .md-button--primary }
[:octicons-info-16:](https://veracrypt.fr/en/Documentation.html){ .card-link title=Documentation}
[:octicons-code-16:](https://veracrypt.fr/code/){ .card-link title="Source Code" }
[:octicons-heart-16:](https://veracrypt.fr/en/Donation.html){ .card-link title=Contribute }
??? downloads
- [:simple-windows11: Windows](https://www.veracrypt.fr/en/Downloads.html)
- [:simple-apple: macOS](https://www.veracrypt.fr/en/Downloads.html)
- [:simple-linux: Linux](https://www.veracrypt.fr/en/Downloads.html)
VeraCrypt is a fork of the discontinued TrueCrypt project. According to its developers, security improvements have been implemented and issues raised by the initial TrueCrypt code audit have been addressed.
When encrypting with VeraCrypt, you have the option to select from different [hash functions](https://en.wikipedia.org/wiki/VeraCrypt#Encryption_scheme). We suggest you **only** select [SHA-512](https://en.wikipedia.org/wiki/SHA-512) and stick to the [AES](https://en.wikipedia.org/wiki/Advanced_Encryption_Standard) block cipher.
Truecrypt has been [audited a number of times](https://en.wikipedia.org/wiki/TrueCrypt#Security_audits), and VeraCrypt has also been [audited separately](https://en.wikipedia.org/wiki/VeraCrypt#VeraCrypt_audit).
## OS Full Disk Encryption
Modern operating systems include [FDE](https://en.wikipedia.org/wiki/Disk_encryption) and will have a [secure cryptoprocessor](https://en.wikipedia.org/wiki/Secure_cryptoprocessor).
### BitLocker
!!! recommendation
![BitLocker logo](assets/img/encryption-software/bitlocker.png){ align=right }
**BitLocker** is the full volume encryption solution bundled with Microsoft Windows. The main reason we recommend it is because of its [use of TPM](https://docs.microsoft.com/en-us/windows/security/information-protection/tpm/how-windows-uses-the-tpm). [ElcomSoft](https://en.wikipedia.org/wiki/ElcomSoft), a forensics company, has written about it in [Understanding BitLocker TPM Protection](https://blog.elcomsoft.com/2021/01/understanding-BitLocker-tpm-protection/).
[:octicons-info-16:](https://docs.microsoft.com/en-us/windows/security/information-protection/BitLocker/BitLocker-overview){ .card-link title=Documentation}
BitLocker is [only supported](https://support.microsoft.com/en-us/windows/turn-on-device-encryption-0c453637-bc88-5f74-5105-741561aae838) on Pro, Enterprise and Education editions of Windows. It can be enabled on Home editions provided that they meet the prerequisites.
??? example "Enabling BitLocker on Windows Home"
To enable BitLocker on "Home" editions of Windows, you must have partitions formatted with a [GUID Partition Table](https://en.wikipedia.org/wiki/GUID_Partition_Table) and have a dedicated TPM (v1.2, 2.0+) module.
1. Open a command prompt and check your drive's partition table format with the following command. You should see "**GPT**" listed under "Partition Style":
```
powershell Get-Disk
```
2. Run this command (in an admin command prompt) to check your TPM version. You should see `2.0` or `1.2` listed next to `SpecVersion`:
```
powershell Get-WmiObject -Namespace "root/cimv2/security/microsofttpm" -Class WIN32_tpm
```
3. Access [Advanced Startup Options](https://support.microsoft.com/en-us/windows/advanced-startup-options-including-safe-mode-b90e7808-80b5-a291-d4b8-1a1af602b617). You need to reboot while pressing the F8 key before Windows starts and go into the *command prompt* in **Troubleshoot****Advanced Options****Command Prompt**.
4. Login with your admin account and type this in the command prompt to start encryption:
```
manage-bde -on c: -used
```
5. Close the command prompt and continue booting to regular Windows.
6. Open an admin command prompt and run the following commands:
```
manage-bde c: -protectors -add -rp -tpm
manage-bde -protectors -enable c:
manage-bde -protectors -get c: > %UserProfile%\Desktop\BitLocker-Recovery-Key.txt
```
!!! tip
Backup `BitLocker-Recovery-Key.txt` on your Desktop to a separate storage device. Loss of this recovery code may result in loss of data.
### FileVault
!!! recommendation
![FileVault logo](assets/img/encryption-software/filevault.png){ align=right }
**FileVault** is the on-the-fly volume encryption solution built into macOS. FileVault is recommended because it [leverages](https://support.apple.com/guide/security/volume-encryption-with-filevault-sec4c6dc1b6e/web) hardware security capabilities present on an Apple silicon SoC or T2 Security Chip.
[:octicons-info-16:](https://support.apple.com/guide/mac-help/encrypt-mac-data-with-filevault-mh11785/mac){ .card-link title=Documentation}
We recommend storing a local recovery key in a secure place as opposed to using your iCloud account for recovery.
### Linux Unified Key Setup
!!! recommendation
![LUKS logo](assets/img/encryption-software/luks.png){ align=right }
**LUKS** is the default FDE method for Linux. It can be used to encrypt full volumes, partitions, or create encrypted containers.
[:octicons-home-16: Homepage](https://gitlab.com/cryptsetup/cryptsetup/-/blob/main/README.md){ .md-button .md-button--primary }
[:octicons-info-16:](https://gitlab.com/cryptsetup/cryptsetup/-/wikis/home){ .card-link title=Documentation}
[:octicons-code-16:](https://gitlab.com/cryptsetup/cryptsetup/){ .card-link title="Source Code" }
??? example "Creating and opening encrypted containers"
```
dd if=/dev/urandom of=/path-to-file bs=1M count=1024 status=progress
sudo cryptsetup luksFormat /path-to-file
```
#### Opening encrypted containers
We recommend opening containers and volumes with `udisksctl` as this uses [Polkit](https://en.wikipedia.org/wiki/Polkit). Most file managers, such as those included with popular desktop environments, can unlock encrypted files. Tools like [udiskie](https://github.com/coldfix/udiskie) can run in the system tray and provide a helpful user interface.
```
udisksctl loop-setup -f /path-to-file
udisksctl unlock -b /dev/loop0
```
!!! note "Remember to back up volume headers"
We recommend you always [back up your LUKS headers](https://wiki.archlinux.org/title/Dm-crypt/Device_encryption#Backup_and_restore) in case of partial drive failure. This can be done with:
```
cryptsetup luksHeaderBackup /dev/device --header-backup-file /mnt/backup/file.img
```
## Browser-based
Browser-based encryption can be useful when you need to encrypt a file but cannot install software or apps on your device.
### hat.sh
!!! recommendation
![hat.sh logo](assets/img/encryption-software/hat-sh.png#only-light){ align=right }
![hat.sh logo](assets/img/encryption-software/hat-sh-dark.png#only-dark){ align=right }
**Hat.sh** is a web application that provides secure client-side file encryption in your browser. It can also be self-hosted and is useful if you need to encrypt a file but cannot install any software on your device due to organizational policies.
[:octicons-globe-16: Website](https://hat.sh){ .md-button .md-button--primary }
[:octicons-eye-16:](https://hat.sh/about/){ .card-link title="Privacy Policy" }
[:octicons-info-16:](https://hat.sh/about/){ .card-link title=Documentation}
[:octicons-code-16:](https://github.com/sh-dv/hat.sh){ .card-link title="Source Code" }
[:octicons-heart-16:](https://github.com/sh-dv/hat.sh#donations){ .card-link title="Donations methods can be found at the bottom of the website" }
## Command-line
Tools with command-line interfaces are useful for integrating [shell scripts](https://en.wikipedia.org/wiki/Shell_script).
### Kryptor
!!! recommendation
![Kryptor logo](assets/img/encryption-software/kryptor.png){ align=right }
**Kryptor** is a free and open-source file encryption and signing tool that makes use of modern and secure cryptographic algorithms. It aims to be a better version of [age](https://github.com/FiloSottile/age) and [Minisign](https://jedisct1.github.io/minisign/) to provide a simple, easier alternative to GPG.
[:octicons-home-16: Homepage](https://www.kryptor.co.uk){ .md-button .md-button--primary }
[:octicons-eye-16:](https://www.kryptor.co.uk/features#privacy){ .card-link title="Privacy Policy" }
[:octicons-info-16:](https://www.kryptor.co.uk/tutorial){ .card-link title=Documentation}
[:octicons-code-16:](https://github.com/samuel-lucas6/Kryptor){ .card-link title="Source Code" }
[:octicons-heart-16:](https://www.kryptor.co.uk/#donate){ .card-link title=Contribute }
??? downloads
- [:simple-windows11: Windows](https://www.kryptor.co.uk)
- [:simple-apple: macOS](https://www.kryptor.co.uk)
- [:simple-linux: Linux](https://www.kryptor.co.uk)
### Tomb
!!! recommendation
![Tomb logo](assets/img/encryption-software/tomb.png){ align=right }
**Tomb** is a command-line shell wrapper for LUKS. It supports steganography via [third-party tools](https://github.com/dyne/Tomb#how-does-it-work).
[:octicons-home-16: Homepage](https://www.dyne.org/software/tomb){ .md-button .md-button--primary }
[:octicons-info-16:](https://github.com/dyne/Tomb/wiki){ .card-link title=Documentation}
[:octicons-code-16:](https://github.com/dyne/Tomb){ .card-link title="Source Code" }
[:octicons-heart-16:](https://www.dyne.org/donate){ .card-link title=Contribute }
## OpenPGP
OpenPGP is sometimes needed for specific tasks such as digitally signing and encrypting email. PGP has many features and is [complex](https://latacora.micro.blog/2019/07/16/the-pgp-problem.html) as it has been around a long time. For tasks such as signing or encrypting files, we suggest the above options.
When encrypting with PGP, you have the option to configure different options in your `gpg.conf` file. We recommend staying with the standard options specified in the [GnuPG user FAQ](https://www.gnupg.org/faq/gnupg-faq.html#new_user_gpg_conf).
!!! tip "Use future defaults when generating a key"
When [generating keys](https://www.gnupg.org/gph/en/manual/c14.html) we suggest using the `future-default` command as this will instruct GnuPG use modern cryptography such as [Curve25519](https://en.wikipedia.org/wiki/Curve25519#History) and [Ed25519](https://ed25519.cr.yp.to/):
```bash
gpg --quick-gen-key alice@example.com future-default
```
### GNU Privacy Guard
!!! recommendation
![GNU Privacy Guard logo](assets/img/encryption-software/gnupg.svg){ align=right }
**GnuPG** is a GPL-licensed alternative to the PGP suite of cryptographic software. GnuPG is compliant with [RFC 4880](https://tools.ietf.org/html/rfc4880), which is the current IETF specification of OpenPGP. The GnuPG project has been working on an [updated draft](https://datatracker.ietf.org/doc/draft-ietf-openpgp-crypto-refresh/) in an attempt to modernize OpenPGP. GnuPG is a part of the Free Software Foundation's GNU software project and has received major [funding](https://gnupg.org/blog/20220102-a-new-future-for-gnupg.html) from the German government.
[:octicons-home-16: Homepage](https://gnupg.org){ .md-button .md-button--primary }
[:octicons-eye-16:](https://gnupg.org/privacy-policy.html){ .card-link title="Privacy Policy" }
[:octicons-info-16:](https://gnupg.org/documentation/index.html){ .card-link title=Documentation}
[:octicons-code-16:](https://git.gnupg.org/cgi-bin/gitweb.cgi?p=gnupg.git){ .card-link title="Source Code" }
??? downloads
- [:simple-googleplay: Google Play](https://play.google.com/store/apps/details?id=org.sufficientlysecure.keychain)
- [:simple-windows11: Windows](https://gpg4win.org/download.html)
- [:simple-apple: macOS](https://gpgtools.org)
- [:simple-linux: Linux](https://gnupg.org/download/index.html#binary)
### GPG4win
!!! recommendation
![GPG4win logo](assets/img/encryption-software/gpg4win.svg){ align=right }
**GPG4win** is a package for Windows from [Intevation and g10 Code](https://gpg4win.org/impressum.html). It includes [various tools](https://gpg4win.org/about.html) that can assist you in using GPG on Microsoft Windows. The project was initiated and originally [funded by](https://web.archive.org/web/20190425125223/https://joinup.ec.europa.eu/news/government-used-cryptography) Germany's Federal Office for Information Security (BSI) in 2005.
[:octicons-home-16: Homepage](https://gpg4win.org){ .md-button .md-button--primary }
[:octicons-eye-16:](https://gpg4win.org/privacy-policy.html){ .card-link title="Privacy Policy" }
[:octicons-info-16:](https://gpg4win.org/documentation.html){ .card-link title=Documentation}
[:octicons-code-16:](https://git.gnupg.org/cgi-bin/gitweb.cgi?p=gpg4win.git;a=summary){ .card-link title="Source Code" }
[:octicons-heart-16:](https://gpg4win.org/donate.html){ .card-link title=Contribute }
??? downloads
- [:simple-windows11: Windows](https://gpg4win.org/download.html)
### GPG Suite
!!! note
We suggest [Canary Mail](email-clients.md#canary-mail) for using PGP with email on iOS devices.
!!! recommendation
![GPG Suite logo](assets/img/encryption-software/gpgsuite.png){ align=right }
**GPG Suite** provides OpenPGP support for [Apple Mail](email-clients.md#apple-mail) and macOS.
We recommend taking a look at their [First steps](https://gpgtools.tenderapp.com/kb/how-to/first-steps-where-do-i-start-where-do-i-begin-setup-gpgtools-create-a-new-key-your-first-encrypted-email) and [Knowledge base](https://gpgtools.tenderapp.com/kb) for support.
[:octicons-home-16: Homepage](https://gpgtools.org){ .md-button .md-button--primary }
[:octicons-eye-16:](https://gpgtools.org/privacy){ .card-link title="Privacy Policy" }
[:octicons-info-16:](https://gpgtools.tenderapp.com/kb){ .card-link title=Documentation}
[:octicons-code-16:](https://github.com/GPGTools){ .card-link title="Source Code" }
??? downloads
- [:simple-apple: macOS](https://gpgtools.org)
### OpenKeychain
!!! recommendation
![OpenKeychain logo](assets/img/encryption-software/openkeychain.svg){ align=right }
**OpenKeychain** is an Android implementation of GnuPG. It's commonly required by mail clients such as [K-9 Mail](email-clients.md#k-9-mail) and [FairEmail](email-clients.md#fairemail) and other Android apps to provide encryption support. Cure53 completed a [security audit](https://www.openkeychain.org/openkeychain-3-6) of OpenKeychain 3.6 in October 2015. Technical details about the audit and OpenKeychain's solutions can be found [here](https://github.com/open-keychain/open-keychain/wiki/cure53-Security-Audit-2015).
[:octicons-home-16: Homepage](https://www.openkeychain.org){ .md-button .md-button--primary }
[:octicons-eye-16:](https://www.openkeychain.org/help/privacy-policy){ .card-link title="Privacy Policy" }
[:octicons-info-16:](https://www.openkeychain.org/faq/){ .card-link title=Documentation}
[:octicons-code-16:](https://github.com/open-keychain/open-keychain){ .card-link title="Source Code" }
??? downloads
- [:simple-googleplay: Google Play](https://play.google.com/store/apps/details?id=org.sufficientlysecure.keychain)
## Criteria
**Please note we are not affiliated with any of the projects we recommend.** In addition to [our standard criteria](about/criteria.md), we have developed a clear set of requirements to allow us to provide objective recommendations. We suggest you familiarize yourself with this list before choosing to use a project, and conduct your own research to ensure it's the right choice for you.
!!! example "This section is new"
We are working on establishing defined criteria for every section of our site, and this may be subject to change. If you have any questions about our criteria, please [ask on our forum](https://discuss.privacyguides.net/latest) and don't assume we didn't consider something when making our recommendations if it is not listed here. There are many factors considered and discussed when we recommend a project, and documenting every single one is a work-in-progress.
### Minimum Qualifications
- Cross-platform encryption apps must be open-source.
- File encryption apps must support decryption on Linux, macOS, and Windows.
- External disk encryption apps must support decryption on Linux, macOS, and Windows.
- Internal (OS) disk encryption apps must be cross-platform or built in to the operating system natively.
### Best-Case
Our best-case criteria represents what we would like to see from the perfect project in this category. Our recommendations may not include any or all of this functionality, but those which do may rank higher than others on this page.
- Operating System (FDE) encryption apps should utilize hardware security such as a TPM or Secure Enclave.
- File encryption apps should have first- or third-party support for mobile platforms.