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.
**Encryption** is the only secure way to control who can access your data. If you are currently not using encryption software for your hard disk, emails, or files, you should pick an option here.
**Cryptomator** is an encryption solution designed for privately saving files to any cloud [:material-server-network: Service Provider](basics/common-threats.md#privacy-from-service-providers){ .pg-teal }, eliminating the need to trust that they won't access your files. 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.
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** 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.
Picocrypt has been [audited](https://github.com/Picocrypt/storage/blob/main/Picocrypt.Audit.Report.pdf) by Radically Open Security in August 2024, and [most](https://github.com/Picocrypt/Picocrypt/issues/32#issuecomment-2329722740) of the issues found in the audit were subsequently fixed.
**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.
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).
For encrypting the drive your operating system boots from, we generally recommend enabling the encryption software that comes with your operating system rather than using a third-party tool. This is because your operating system's native encryption tools often make use of OS and hardware-specific features like the [secure cryptoprocessor](https://en.wikipedia.org/wiki/Secure_cryptoprocessor) in your device to protect your computer against more advanced physical attacks. For secondary drives and external drives which you *don't* boot from, we still recommend using open-source tools like [VeraCrypt](#veracrypt-disk) over the tools below, because they offer additional flexibility and let you avoid vendor lock-in.
**BitLocker** is the full volume encryption solution bundled with Microsoft Windows. The main reason we recommend it for encrypting your boot drive is because of its [use of TPM](https://learn.microsoft.com/windows/security/information-protection/tpm/how-windows-uses-the-tpm). ElcomSoft, a forensics company, has written about this feature in [Understanding BitLocker TPM Protection](https://blog.elcomsoft.com/2021/01/understanding-BitLocker-tpm-protection).
BitLocker is [only supported](https://support.microsoft.com/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.
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. You may need to [disable the non-Bitlocker "Device encryption" functionality](https://discuss.privacyguides.net/t/enabling-bitlocker-on-the-windows-11-home-edition/13303/5) (which is inferior because it sends your recovery key to Microsoft's servers) if it is enabled on your device already before following this guide.
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":
3. Access [Advanced Startup Options](https://support.microsoft.com/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**.
**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.
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.
<p class="admonition-title">Remember to back up volume headers</p>
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:
**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.
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://gnupg.org/faq/gnupg-faq.html#new_user_gpg_conf).
When [generating keys](https://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):
**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.
**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.
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.
**OpenKeychain** is an Android implementation of GnuPG. It's commonly required by mail clients such as [Thunderbird](email-clients.md#thunderbird) and [FairEmail](email-clients.md#fairemail-android) and other Android apps to provide encryption support. Cure53 completed a [security audit](https://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).
**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.
Nosso critério de melhor caso representa o que gostaríamos de ver em um projeto perfeito nessa categoria. Our recommendations may not include any or all of this functionality, but those which do may rank higher than others on this page.
