Struct ProviderClient 

pub struct ProviderClient<R, W> { /* private fields */ }

Async client for communicating with a key provider process.

Thread-safe via an interior Mutex — multiple tasks can share a single client, but requests are serialized (one at a time on the wire).

Implementations

impl<R, W> ProviderClient<R, W>

where R: AsyncRead + Unpin + Send + 'static, W: AsyncWrite + Unpin + Send + 'static,

pub fn new(reader: R, writer: W) -> Self

Create a new client from an AsyncRead (provider’s stdout) and AsyncWrite (provider’s stdin).

pub async fn initialize(&self) -> Result<InitializeResult, Error>

Send an initialize request and return the provider’s certificates.

May be called multiple times to reload certificates from a running provider.

pub async fn sign( &self, certificate_id: &str, scheme: &str, blob: &[u8], ) -> Result<Vec<u8>, Error>

Send a sign request and return the raw signature bytes.