client

OO7

This library allows to store secrets using two different backends:

• dbus implements the org.freedesktop.Secret specification.

• file stores secrets in an encrypted file compatible with libsecret. For sandboxed applications use case, the file can be encrypted using a secret retrieved from the org.freedesktop.portal.Secrets portal.

Sandboxed applications should prefer using the file backend as it doesn't expose the application secrets to other applications that can talk to the org.freedesktop.Secrets service.

The library provides types that automatically pick a backend based on whether the application is sandboxed or not. Applications developers should use those APIs.

Goals

• Async only API
• Ease to use
• Integration with the Secret portal if sandboxed
• Provide API to migrate from host secrets to sandboxed ones

Examples

Basic usage

use std::collections::HashMap;

async fn run() -> oo7::Result<()> {
    let keyring = oo7::Keyring::new().await?;
    let attributes = HashMap::from([("attribute", "attribute_value")]);

    // Store a secret
    keyring
        .create_item("Item Label", &attributes, b"secret", true).await?;

    // Find a stored secret
    let items = keyring.search_items(&attributes).await?;

    // Delete a stored secret
    keyring.delete(&attributes).await?;

    // Unlock the collection if the Secret Service is used
    keyring.unlock().await?;

    // Lock the collection if the Secret Service is used
    keyring.lock().await?;
    Ok(())
}

If your application makes heavy usage of the keyring like a password manager. You could store an instance of the Keyring in a OnceCell / OnceLock / Lazy

use std::sync::OnceLock;
use std::collections::HashMap;

static KEYRING: OnceLock<oo7::Keyring> = OnceLock::new();

fn main() {
    // SOME_RUNTIME could be a tokio/async-std/glib runtime
    SOME_RUNTIME.block_on(async {
        let keyring = oo7::Keyring::new()
            .await
            .expect("Failed to start Secret Service");
        KEYRING.set(keyring);
    });

    // Then to use it
    SOME_RUNTIME.spawn(async {
        let items = KEYRING
            .get()
            .unwrap()
            .search_items(&[("attribute", "attribute_value")])
            .await;
    });
}

Migrating your secrets to the file backend

The library also comes with API to migrate your secrets from the host Secret Service to the sandboxed file backend. Note that the items are removed from the host keyring if they are migrated successfully.

use std::collections::HashMap;

// SOME_RUNTIME could be a tokio/async-std/glib runtime
SOME_RUNTIME.block_on(async {
    match oo7::migrate(vec![HashMap::from([("attribute", "attribute_value")])], true).await {
        Ok(_) => {
            // Store somewhere the migration happened, to avoid re-doing it at every startup
        }
        Err(err) => log::error!("Failed to migrate secrets {err}"),
    }
});

Optional features

Feature	Description	Default
tracing	Record various debug information using the tracing library	No
async-std	Use async-std APIs for IO/filesystem operations	No
tokio	Use tokio APIs for IO/Filesystem operations	Yes
native_crypto	Use Rust Crypto crates for cryptographic primitives	Yes
openssl_crypto	Use openssl crate for cryptographic primitives	No
unstable	Unlock internal APIs	No

How does it compare to other libraries?

• libsecret is a C library that provides the same two backends. The current main pain point with it is that it does assume things for you so it will either use the host or the sandbox file-based keyring which makes migrating your secrets to inside the sandbox a probably impossible task. There are also issues like https://gitlab.gnome.org/GNOME/libsecret/-/issues/58 that makes it not usable inside the Flatpak sandbox.

• libsecret-rs provides Rust bindings to libsecret.

• secret-service-rs uses zbus internally as well but does provide a sync only API, hasn't seen an update in a while, doesn't integrate with Secret portal if sandboxed.

License

The project is released under the MIT license.

Credits

• secret-service-rs for the encrypted Secret Service implementation.