ezidam + jwt: get key, import private key, create jwt claims and sign them

crates/jwt/src/key/private.rs

@@ -1,6 +1,7 @@
-use crate::Error;
+use crate::{Error, JwtClaims};
 use id::KeyID;
-use jwt_compact::alg::{RsaPrivateKey, StrongKey};
+use jwt_compact::alg::{Rsa, RsaPrivateKey, StrongKey};
+use jwt_compact::{AlgorithmExt, Claims, Header};
 use rsa::pkcs8::der::zeroize::Zeroizing;
 use rsa::pkcs8::{DecodePrivateKey, EncodePrivateKey};
 
@@ -27,6 +28,18 @@ impl PrivateKey {
             key: RsaPrivateKey::from_pkcs8_der(der)?,
         })
     }
+
+    pub fn id(&self) -> &str {
+        self.id.as_ref()
+    }
+
+    pub fn sign_serialize_jwt(
+        &self,
+        header: Header,
+        claims: Claims<JwtClaims>,
+    ) -> Result<String, Error> {
+        Ok(Rsa::ps256().token(header, &claims, &self.key)?)
+    }
 }
 
 #[cfg(test)]