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@@ -1,8 +1,8 @@
---
meta_title: "推奨される暗号化ソフトウェア:VeraCryptCryptomatorPicoCryptOpenPGP - Privacy Guides"
meta_title: "Recommended Encryption Software: VeraCrypt, Cryptomator, PicoCrypt, and OpenPGP - Privacy Guides"
title: "暗号化ソフトウェア"
icon: material/file-lock
description: データの暗号化は、誰がデータにアクセスできるかをコントロールする唯一の方法です。 これらのツールを使えば、電子メールやその他のファイルを暗号化できます。
description: データの暗号化は、誰がデータにアクセスできるかをコントロールする唯一の方法です。 These tools allow you to encrypt your emails and any other files.
cover: encryption.webp
---
@@ -14,27 +14,32 @@ cover: encryption.webp
### Cryptomatorクラウド
!!! recommendation
<div class="admonition recommendation" markdown>
![Cryptomator logo](assets/img/encryption-software/cryptomator.svg){ align=right }
**Cryptomator** is an encryption solution designed for privately saving files to any cloud provider. It allows you to create vaults that are stored on a virtual drive, the contents of which are encrypted and synced with your cloud storage provider.
[: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)
![Cryptomator logo](assets/img/encryption-software/cryptomator.svg){ align=right }
**Cryptomator** is an encryption solution designed for privately saving files to any cloud provider. It allows you to create vaults that are stored on a virtual drive, the contents of which are encrypted and synced with your cloud storage provider.
[: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 }
<details class="downloads" markdown>
<summary>Downloads</summary>
- [: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)
</details>
</div>
Cryptomatorは、AES-256を用いて、ファイルとファイル名の両方を暗号化します。 Cryptomator cannot encrypt metadata such as access, modification, and creation timestamps, nor the number and size of files and folders.
@@ -44,41 +49,51 @@ Cryptomator's documentation details its intended [security target](https://docs.
### Picocryptファイル
!!! recommendation
<div class="admonition recommendation" markdown>
![Picocrypt logo](assets/img/encryption-software/picocrypt.svg){ align=right }
**Picocrypt**は小さくシンプルな暗号化ツールで、最新の暗号化を提供します。 Picocryptは、セキュアなXChaCha20暗号とArgon2idキー派生機能を使用し、高レベルのセキュリティを提供します。 暗号化機能には、Go標準のx/cryptoモジュールを使用しています。
[:octicons-repo-16: Repository](https://github.com/HACKERALERT/Picocrypt){ .md-button .md-button--primary }
[:octicons-code-16:](https://github.com/HACKERALERT/Picocrypt){ .card-link title="ソースコード" }
[:octicons-heart-16:](https://opencollective.com/picocrypt){ .card-link title=貢献 }
??? ダウンロード
- [: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)
![Picocrypt logo](assets/img/encryption-software/picocrypt.svg){ align=right }
**Picocrypt**は小さくシンプルな暗号化ツールで、最新の暗号化を提供します。 Picocryptは、セキュアなXChaCha20暗号とArgon2idキー派生機能を使用し、高レベルのセキュリティを提供します。 暗号化機能には、Go標準のx/cryptoモジュールを使用しています。
[:octicons-repo-16: Repository](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=Contribute }
<details class="downloads" markdown>
<summary>Downloads</summary>
- [: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)
</details>
</div>
### VeraCryptディスク
!!! recommendation
<div class="admonition recommendation" markdown>
![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 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 }
<details class="downloads" markdown>
<summary>Downloads</summary>
- [: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)
</details>
</div>
VeraCryptは、終了したTrueCryptプロジェクトのフォークです。 開発者によると、セキュリティの改善が実装されており、最初のTrueCryptコード監査によって提起された問題が解決されています。
@@ -92,100 +107,119 @@ For encrypting the drive your operating system boots from, we generally recommen
### BitLocker
!!! recommendation
<div class="admonition recommendation" markdown>
![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 for encrypting your boot drive is because of its [use of TPM](https://docs.microsoft.com/en-us/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/).
[:octicons-info-16:](https://docs.microsoft.com/en-us/windows/security/information-protection/BitLocker/BitLocker-overview){ .card-link title=Documentation}
![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 for encrypting your boot drive is because of its [use of TPM](https://docs.microsoft.com/en-us/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/).
[:octicons-info-16:](https://docs.microsoft.com/en-us/windows/security/information-protection/BitLocker/BitLocker-overview){ .card-link title=Documentation}
</details>
</div>
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"
<details class="example" markdown>
<summary>Enabling BitLocker on Windows Home</summary>
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.
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":
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
powershell Get-Disk
```
```
powershell Get-Disk
```
2. このコマンドを管理者コマンドプロンプトで実行し、TPMのバージョンを確認してください。 You should see `2.0` or `1.2` listed next to `SpecVersion`:
```powershell
powershell Get-WmiObject -Namespace "root/cimv2/security/microsofttpm" -Class WIN32_tpm
```
2. このコマンドを管理者コマンドプロンプトで実行し、TPMのバージョンを確認してください。 You should see `2.0` or `1.2` listed next to `SpecVersion`:
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:
```powershell
manage-bde -on c: -used
```
```
powershell Get-WmiObject -Namespace "root/cimv2/security/microsofttpm" -Class WIN32_tpm
```
5. Close the command prompt and continue booting to regular Windows.
6. Open an admin command prompt and run the following commands:
```powershell
manage-bde c: -protectors -add -rp -tpm
manage-bde -protectors -enable c:
manage-bde -protectors -get c: > %UserProfile%\Desktop\BitLocker-Recovery-Key.txt
```
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**.
<div class="admonition tip" markdown>
<p class="admonition-title">Tip</p>
4. Login with your admin account and type this in the command prompt to start encryption:
Backup `BitLocker-Recovery-Key.txt` on your Desktop to a separate storage device. Loss of this recovery code may result in loss of data.
```
manage-bde -on c: -used
```
</div>
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
```
!!! ヒント
Backup `BitLocker-Recovery-Key.txt` on your Desktop to a separate storage device. Loss of this recovery code may result in loss of data.
</details>
### FileVault
!!! recommendation
<div class="admonition recommendation" markdown>
![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}
![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}
</details>
</div>
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
<div class="admonition recommendation" markdown>
![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" }
![LUKS logo](assets/img/encryption-software/luks.png){ align=right }
??? example "Creating and opening encrypted containers"
**LUKS** is the default FDE method for Linux. It can be used to encrypt full volumes, partitions, or create encrypted containers.
```
dd if=/dev/urandom of=/path-to-file bs=1M count=1024 status=progress
sudo cryptsetup luksFormat /path-to-file
```
[: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" }
</details>
#### 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
```
</div>
!!! note "Remember to back up volume headers"
<details class="example" markdown>
<summary>Creating and opening encrypted containers</summary>
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:
```bash
dd if=/dev/urandom of=/path-to-file bs=1M count=1024 status=progress
sudo cryptsetup luksFormat /path-to-file
```
```
cryptsetup luksHeaderBackup /dev/device --header-backup-file /mnt/backup/file.img
```
#### 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.
```bash
udisksctl loop-setup -f /path-to-file
udisksctl unlock -b /dev/loop0
```
</details>
<div class="admonition note" markdown>
<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:
```bash
cryptsetup luksHeaderBackup /dev/device --header-backup-file /mnt/backup/file.img
```
</div>
## コマンドライン
@@ -193,36 +227,45 @@ Tools with command-line interfaces are useful for integrating [shell scripts](ht
### Kryptor
!!! recommendation
<div class="admonition recommendation" markdown>
![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)
![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 }
<details class="downloads" markdown>
<summary>Downloads</summary>
- [:simple-windows11: Windows](https://www.kryptor.co.uk)
- [:simple-apple: macOS](https://www.kryptor.co.uk)
- [:simple-linux: Linux](https://www.kryptor.co.uk)
</details>
</div>
### Tomb
!!! recommendation
<div class="admonition recommendation" markdown>
![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 }
![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 }
</details>
</div>
## OpenPGP
@@ -230,99 +273,128 @@ OpenPGP is sometimes needed for specific tasks such as digitally signing and enc
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"
<div class="admonition tip" markdown>
<p class="admonition-title">Use future defaults when generating a key</p>
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/):
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
```
```bash
gpg --quick-gen-key alice@example.com future-default
```
</div>
### GNU Privacy Guard
!!! recommendation
<div class="admonition recommendation" markdown>
![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)
![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" }
<details class="downloads" markdown>
<summary>Downloads</summary>
- [: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)
</details>
</div>
### GPG4win
!!! recommendation
<div class="admonition recommendation" markdown>
![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)
![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 }
<details class="downloads" markdown>
<summary>Downloads</summary>
- [:simple-windows11: Windows](https://gpg4win.org/download.html)
</details>
</div>
### GPG Suite
!!! メモ
<div class="admonition note" markdown>
<p class="admonition-title">Note</p>
We suggest [Canary Mail](email-clients.md#canary-mail) for using PGP with email on iOS devices.
We suggest [Canary Mail](email-clients.md#canary-mail) for using PGP with email on iOS devices.
!!! recommendation
</div>
![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)
<div class="admonition recommendation" markdown>
![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" }
<details class="downloads" markdown>
<summary>Downloads</summary>
- [:simple-apple: macOS](https://gpgtools.org)
</details>
</div>
### OpenKeychain
!!! recommendation
<div class="admonition recommendation" markdown>
![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)
![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" }
<details class="downloads" markdown>
<summary>Downloads</summary>
- [:simple-googleplay: Google Play](https://play.google.com/store/apps/details?id=org.sufficientlysecure.keychain)
</details>
</div>
## 規準
**私たちは、推薦するどのプロジェクトとも提携していません。**客観的に推薦できるよう、[標準となる規準](about/criteria.md)に加えて、一連の明確な要件を定めています。 プロジェクトを利用する前に、このリストをよく理解し、ご自身で調査を行って、そのプロジェクトがあなたにとって適切な選択かどうかをご確認ください。
!!! example "この項目は最近作成されました"
<div class="admonition example" markdown>
<p class="admonition-title">This section is new</p>
私たちは、サイトの各項目に関して、定義された規準の確立に取り組んでいます。この規準は変更される可能性があります。 規準について疑問がある場合は、[フォーラムで質問](https://discuss.privacyguides.net/latest)してください。また、ここに記載されていない場合でも、私たちがプロジェクトを推奨する際に、そうした事柄を考慮しなかったと仮定するのはお止めください。 プロジェクトを推奨する際に考慮され、議論される要素は多くあり、そのすべてを文書化する作業は現在進行中です。
私たちは、サイトの各項目に関して、定義された規準の確立に取り組んでいます。この規準は変更される可能性があります。 規準について疑問がある場合は、[フォーラムで質問](https://discuss.privacyguides.net/latest)してください。また、ここに記載されていない場合でも、私たちがプロジェクトを推奨する際に、そうした事柄を考慮しなかったと仮定するのはお止めください。 プロジェクトを推奨する際に考慮され、議論される要素は多くあり、そのすべてを文書化する作業は現在進行中です。
</div>
### 最低要件