Rust crate to produce & verify TrueLayer API requests signatures.
rust
// `Tl-Signature` value to send with the request.
let tl_signature = truelayer_signing::sign_with_pem(kid, private_key)
.method("POST")
.path("/payouts")
.header("Idempotency-Key", idempotency_key)
.body(body)
.sign()?;