Add sample IdentityAgent configuration for Bitwarden.

Author: dkocher

tutorials/index.md

@@ -10,6 +10,7 @@ iam
 vault_localdisk
 sftp_publickeyauth
 sftp_publickeyauth_1password
+sftp_publickeyauth_bitwarden
 cli_github_action
 :::
 
@@ -33,5 +34,8 @@ Configure Public Key Authentication for SFTP using OpenSSH tools.
 ### [Configure 1Password SSH Agent](sftp_publickeyauth_1password.md)
 Authenticate with SSH private key saved in 1Password.
 
+### [Configure Bitwarden SSH Agent](sftp_publickeyauth_bitwarden.md)
+Authenticate with SSH private key saved in Bitwarden.
+
 ## [Use Cyberduck CLI GitHub Action](cli_github_action.md)
 Use Cyberduck CLI Docker Container in GitHub Actions

tutorials/sftp_publickeyauth_bitwarden.md

@@ -0,0 +1,21 @@
+Configure Public Key Authentication for SFTP using Bitwarden SSH Agent
+====
+
+Public-key authentication using 1Password SSH Agent allows you to connect to a remote server without a password. Instead, public-key authentication uses two keys:
+- Private key managed by 1Password
+- Public key placed on the server usually by the system administrator
+
+1. Ensure you have configured 1Password to manage your SSH keys. For more information, refer to [Bitwarden SSH Agent](https://bitwarden.com/help/ssh-agent/#configure-bitwarden-ssh-agent).
+2. Open the OpenSSH configuration file `~/.ssh/config` and add the following configuration specifying to use 1Password as the SSH agent:
+    ```
+    Host *
+       IdentitiesOnly yes
+       # Bitwarden SSH agent
+       IdentityAgent ~/.1password/agent.sock
+    ```
+   This [configuration](https://docs.cyberduck.io/protocols/sftp/#openssh-configuration-interoperability) directive is supported by Cyberduck and Mountain Duck.
+3. In the [Bookmark](../../cyberduck/bookmarks.md) or [Connection](../../cyberduck/connection.md) panel, select *Use Public Key Authentication* and select the  public key corresponding to your SSH private key saved in 1Password. Typically, it is located in the `~/.ssh` directory.
+
+## References
+
+* [Bitwarden SSH Agent](https://bitwarden.com/help/ssh-agent/#configure-bitwarden-ssh-agent)