Files

improved error handling and better session management

Added

- New ClearSession parameter to remove the stored Vaultwarden session from the Windows Credential Manager.
- New Test-Prerequisites function to check if the required tools (ssh-add, Bitwarden CLI) are installed and available.
- New Get-BWSession function to retrieve the Vaultwarden session from the Windows Credential Manager, and fallback to getting a new session if the stored one is invalid.
- New Clear-SensitiveData function to clear sensitive data (SecureString, string) from memory.
- New Clear-BWSession function to remove the stored session from the Windows Credential Manager.

Changed

- The Test-VaultwardenConfig function now prompts the user to enter the Vaultwarden server URL if it's not configured, rather than throwing an error.
- The Get-FolderId and Get-FolderItems functions now take the session as a parameter, rather than relying on a global session variable.
- The Get-PrivatePublicKey function now uses the --raw flag to retrieve the private key attachment, instead of joining the attachment content.
The main script execution has been reorganized to handle the session retrieval and management more explicitly.
- The script now includes a detailed help section at the top, providing information about the script's usage and parameters.
Removed

2024-10-25 22:51:13 +02:00

3.9 KiB

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Vaultwarden SSH Agent Script

A PowerShell script that automatically loads SSH keys from your Vaultwarden vault into your SSH agent. This script provides a secure way to manage and load your SSH keys by storing them in your Vaultwarden vault and loading them into your SSH agent when needed.

Prerequisites

PowerShell 5.1 or later
Bitwarden CLI installed and available in PATH
OpenSSH installed on your system
SSH agent running on your system
A Vaultwarden (self-hosted Bitwarden) instance

Installation

Download the script file (vaultwarden-ssh-agent.ps1) to your preferred location

Configuration

Initial Setup

Create a folder (default name: 'ssh-agent') in your Vaultwarden vault
Create a new item in the 'ssh-agent' folder
Paste the public key in the notes field
Attach the private key as a file attachment

Note: If you haven't configured the Bitwarden CLI for your Vaultwarden instance yet, don't worry! The script will automatically prompt you for your server URL during the first run.

Key Item Structure

Each SSH key in Vaultwarden should be structured as follows:

Folder: Must be in the 'ssh-agent' folder (or your custom folder name)
Name: A descriptive name for your SSH key
Notes: Contains the public key (required)
Attachment: The private key file (required)

Usage

Basic usage

.\vaultwarden-ssh-agent.ps1

Run with debug information

.\vaultwarden-ssh-agent.ps1 -Debug

Use a custom folder name

.\vaultwarden-ssh-agent.ps1 -FolderName "my-ssh-keys"

Security Features

Secure session key storage using Windows Credential Manager
Secure handling of private keys using SecureString
Proper cleanup of sensitive data from memory
Key format validation before loading

Clearing Stored Session Token

The script stores the Bitwarden session token in the Windows Credential Manager. This allows the script to reuse the session, avoiding the need to unlock the vault on every run.

If you need to clear the stored session for any reason, you can run the following command: .\Vaultwarden_ssh-agent.ps1 -ClearSession

This will remove the stored session token from the Windows Credential Manager. The next time you run the script, it will need to unlock the vault with your master password before proceeding.

Clearing the stored session may be necessary to ensure a fresh session is obtained.

Error Handling

The script includes comprehensive error handling:

Prerequisites validation
Vaultwarden configuration verification
Key format validation
Detailed debug output when needed
Operation results reporting
Troubleshooting

Common Issues

"SSH agent is not running"

Start the SSH agent service:

Set-Service ssh-agent -StartupType Automatic
Start-Service ssh-agent

"Folder not found"

Create the folder in your Vaultwarden vault
Verify the folder name matches the script parameter (default: "ssh-agent")

"Failed to add key"

Verify the SSH agent is running
Check key format in Vaultwarden
Run with -Debug flag for more information
Verify private key file attachment

"Bitwarden CLI not found"

Ensure Bitwarden CLI is installed
Verify bw is in your system PATH
Debug ModeRun the script with the -Debug switch for detailed operation information:.\vaultwarden-ssh-agent.ps1 -Debug

Security Notes

Never share your private keys
Regularly rotate your SSH keys
Session key are stored securely in Windows Credential Manager
Private keys are handled as SecureString during processing
All sensitive data is cleared from memory after use
Monitor SSH agent contents with ssh-add -l

Contributing

Contributions are welcome! Please feel free to submit a Pull Request.

Support

If you encounter any issues or have questions, please open an issue in the repository.

License

This script is available under the MIT License. See the LICENSE file for more details.

3.9 KiB Raw Blame History