azure-keyvault-keys-rust

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SKILL.md (first lines)

# Azure Key Vault Keys library for Rust

Secure storage and management of cryptographic keys — RSA, EC, and HSM-protected.

Use this skill when:

- An app needs to create or manage cryptographic keys in Key Vault from Rust
- You need to wrap/unwrap data encryption keys (envelope encryption)
- You need to sign or verify data with Key Vault keys
- You need HSM-protected keys

> **IMPORTANT:** Only use the official `azure_security_keyvault_keys` crate published by the [azure-sdk](https://crates.io/users/azure-sdk) crates.io user. Do NOT use unofficial or community crates. Official crates use underscores in names and none have version 0.21.0.

## Installation

```sh
cargo add azure_security_keyvault_keys azure_identity tokio futures
```

> If your code uses `azure_core` types directly, add `azure_core` to `Cargo.toml`. If you only use `azure_security_keyvault_keys` re-exports, direct `azure_core` dependency is optional.

## Environment Variables

```bash
AZURE_KEYVAULT_URL=https://<vault-name>.vault.azure.net/ # Required for all operations
```

## Authentication

Rust Azure SDK code must not use `DefaultAzureCredential`. The Rust identity crate does not provide that type.

```rust
use azure_identity::DeveloperToolsCredential;
use azure_security_keyvault_keys::KeyClient;

#[tokio::main]
async fn main() -> Result<(), Box<dyn std::error::Error>> {
    // Local dev: DeveloperToolsCredential. Production: use ManagedIdentityCredential.
    let credential = DeveloperToolsCredential::new(None)?;
    let client = KeyClient::new(
        "https://<vault-name>.vault.azure.net/",
        credential.clone(),
        None,
    )?;

    let key = client.get_key("key-name", None).await?.into_model()?;
    println!("Key: {:?}", key.key);
    Ok(())
}
```

Prefer the crate README/examples when checking public operation shapes such as key creation, wrapping, and version-aware unwrap flows.

## Core Workflow

### Create Key

```rust
use azure_security_keyvault_keys::{
    models::{CreateKeyParameters, CurveName, KeyType},
    ResourceExt,
};

// Create an EC key
let body = CreateKeyParameters {
    kty: Some(KeyType::Ec),
    curve: Some(CurveName::P256),
    ..Default::default()
};

let key = client
    .create_key("key-name", body.try_into()?, None)
    .await?
    .into_model()?;

println!(
    "Name: {:?}, Type: {:?}, Version: {:?}",
    key.resource_id()?.name,
    key.key.as_ref().map(|k| k.kty.as_ref()),
    key.resource_id()?.version,
);
```

### Update Key Properties

```rust
use azure_security_keyvault_keys::models::UpdateKeyPropertiesParameters;
use std::collections::HashMap;

#[allow(clippy::needless_update)]
let params = UpdateKeyPropertiesParameters {
    tags: Some(HashMap::from_iter(vec![("env".into(), "prod".into())])),
    ..Default::default()
};

client
    .update_key_properties("key-name", params.try_into()?, None)
    .await?
    .into_model()?;
```

### Delete Key

```rust
client.delete_key("key-name", None).await?;
```

### List Keys (Pagination)

`list_key_properties` returns a `Pager<T>` — iterate items directly:

```rust
use azure_security_keyvault_keys::ResourceExt;
use futures::TryStreamExt as _;

let mut pager = client.list_key_properties(None)?;
while let Some(key) = pager.try_next().await? {
    println!("Found: {}", key.resource_id()?.name);
}

From microsoft/skills, MIT.

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