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<!DOCTYPE html>
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<head>
<title>GPG Cheatsheet 🛡️</title>
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## GPG cheatsheet <h1>GPG Cheatsheet 🛡️</h1>
### Key Management <h2>🔑 Key Management</h2>
- **Generate a new GPG key pair:** <p><strong>Generate a new GPG key pair:</strong></p>
<code>gpg --full-generate-key</code>
\`\`\`bash <p><strong>List all keys in your GPG keyring:</strong></p>
gpg --full-generate-key <code>gpg --list-keys</code>
\`\`\`
- **List all keys in your GPG keyring:** <p><strong>List all the secret keys in your GPG keyring:</strong></p>
<code>gpg --list-secret-keys</code>
\`\`\`bash <h2>🔒 Message Encryption and Decryption</h2>
gpg --list-keys
\`\`\`
- **List all the secret keys in your GPG keyring:** <p><strong>Encrypt a message:</strong></p>
<code>gpg -e -u "your-email@example.com" -r "recipient@example.com" message.txt</code>
\`\`\`bash <p><strong>Decrypt a message:</strong></p>
gpg --list-secret-keys <code>gpg -o decrypted-message.txt -d message.txt.gpg</code>
\`\`\`
# Message Encryption and Decryption <h2>📁 GPG Folder Encryption Cheat Sheet</h2>
- **Encrypt a message:** <h3>Encrypting a Folder</h3>
\`\`\`bash <ol>
gpg -e -u "your-email@example.com" -r "recipient@example.com" message.txt <li><strong>Create a tarball from the folder you want to encrypt:</strong></li>
This creates message.txt.gpg. <code>tar -czvf archive.tar.gz /path/to/folder_to_encrypt</code>
\`\`\`
- **Decrypt a message:** <li><strong>Encrypt the tarball using GPG:</strong></li>
<code>gpg -e -r your-email@example.com archive.tar.gz</code>
</ol>
\`\`\`bash <h3>Decrypting a Folder</h3>
gpg -o decrypted-message.txt -d message.txt.gpg
\`\`\`
- This creates `decrypted-message.txt`. <ol>
<li><strong>Decrypt the GPG file to a tarball:</strong></li>
<code>gpg -o archive.tar.gz -d archive.tar.gz.gpg</code>
# GPG Folder Encryption Cheat Sheet <li><strong>Extract the tarball to the original folder:</strong></li>
<code>tar -xzvf archive.tar.gz</code>
</ol>
## Encrypting a Folder <h2>✉️ Encrypting a Message for Yourself: [Different Method]</h2>
<!-- Your content here -->
1. **Create a tarball from the folder you want to encrypt:** <h3>Encrypting a message for yourself:</h3>
Replace **`/path/to/folder_to_encrypt`** with the path to your folder and **`archive.tar.gz`** with the desired name for your tarball. <ol>
<li><strong>Generate a Key Pair:</strong></li>
<code>gpg --gen-key</code>
\`\`\`bash <li><strong>Encrypt the Message:</strong></li>
tar -czvf archive.tar.gz /path/to/folder_to_encrypt <code>gpg -e -u "Your Name" -r "Your Name" message.txt</code>
\`\`\`
2. **Encrypt the tarball using GPG:** <li><strong>Decrypt the Message:</strong></li>
<code>gpg -d message.txt.gpg</code>
</ol>
Replace **`your-email@example.com`** with your email and **`archive.tar.gz`** with your tarball's name. This will create an encrypted file named **`archive.tar.gz.gpg`**. <h2>👥 Encrypting a Message for Someone Else:</h2>
\`\`\`bash <ol>
gpg -e -r your-email@example.com archive.tar.gz <li><strong>Import Their Public Key:</strong></li>
\`\`\` <code>gpg --import theirkey.gpg</code>
## Decrypting a Folder <li><strong>Encrypt the Message:</strong></li>
<code>gpg -e -u "Your Name" -r "Their Name" message.txt</code>
</ol>
1. **Decrypt the GPG file to a tarball:** <h2>🔄 Exporting & Importing Keys</h2>
This will decrypt the **`archive.tar.gz.gpg`** file back to **`archive.tar.gz`**. <p><strong>Exporting Your Public Key:</strong></p>
\`\`\`bash <ol>
gpg -o archive.tar.gz -d archive.tar.gz.gpg <li><strong>List your keys to find the one you want to export:</strong></li>
\`\`\` <code>gpg --list-keys</code>
2. **Extract the tarball to the original folder:** <li><strong>Export it to a file:</strong></li>
<code>gpg --export -a "Your Name" > public.key</code>
</ol>
This will extract the contents of the tarball to the current directory. </body>
</html>
\`\`\`bash
tar -xzvf archive.tar.gz
\`\`\`
Please note that the person performing the decryption and extraction will need the GPG private key that corresponds to the public key used to encrypt the file.
# Encrypting a message for yourself: [Different Method]
1. **Generate a Key Pair**: If you haven't already, you'll need to generate a GPG key pair. You can do this with the **`-gen-key`** option:
\`\`\`bash
gpg --gen-key
\`\`\`
Follow the prompts to set your name, email address, and passphrase.
2. **Encrypt the Message**: You can now encrypt a message with your public key. For example, to encrypt a message in a file named **`message.txt`**, you can use the following command:
\`\`\`bash
gpg -e -u "Your Name" -r "Your Name" message.txt
\`\`\`
Replace "Your Name" with the name you used when generating your key pair. This will create an encrypted file named **`message.txt.gpg`**.
3. **Decrypt the Message**: To decrypt the message, you can use the **`gpg`** command with the **`d`** option:
\`\`\`bash
gpg -d message.txt.gpg
\`\`\`
You'll be asked for the passphrase you used when generating your key pair.
# Encrypting a message for someone else:
1. **Import Their Public Key**: Before you can encrypt a message for someone else, you'll need their GPG public key. Once you have it, you can import it with the **`-import`** option:
\`\`\`bash
gpg --import theirkey.gpg
\`\`\`
Replace "theirkey.gpg" with the filename of their public key.
2. **Encrypt the Message**: You can now encrypt a message with their public key. For example, to encrypt a message in a file named **`message.txt`**, you can use the following command:
\`\`\`bash
gpg -e -u "Your Name" -r "Their Name" message.txt
\`\`\`
Replace "Your Name" with your name and "Their Name" with the name associated with their public key. This will create an encrypted file named **`message.txt.gpg`**.
The recipient will then be able to decrypt the message using their private key.
# Exporting & Importing Keys
**Exporting Your Public Key:**
1. List your keys to find the one you want to export:
\`\`\`bash
gpg --list-keys
\`\`\`
2. Once you've identified the key you want to export (it's usually your email address or name), use the **`-export`** option with the **`a`** (armor) flag to export it to a file:
\`\`\`bash
gpg --export -a "Your Name" > public.key
\`\`\`
Replace "Your Name" with the name or email associated with the key you want to export. This will create a file named **`public.key`** containing your public key.

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