backup identity handler

crates/common/src/identity.rs

@@ -0,0 +1,31 @@
+use starknet::{core::types::FieldElement, signers::SigningKey};
+
+pub struct IdentityHandler {
+    /// Key pair for the p2p network.
+    /// This represents the identity of the node in the network.
+    pub p2p_keypair: libp2p::identity::Keypair,
+    /// The signing key for the StarkNet network.
+    /// This is used to sign messages and transactions.
+    pub signing_key: SigningKey,
+}
+
+impl IdentityHandler {
+    pub fn new(private_key: Vec<u8>) -> Self {
+        let secret_key = libp2p::identity::ecdsa::SecretKey::try_from_bytes(private_key.as_slice())
+            .expect("Failed to create secret key from private key.");
+        let p2p_keypair =
+            libp2p::identity::Keypair::from(libp2p::identity::ecdsa::Keypair::from(secret_key));
+        let signing_key = SigningKey::from_secret_scalar(
+            FieldElement::from_byte_slice_be(private_key.as_slice()).unwrap(),
+        );
+        Self { p2p_keypair, signing_key }
+    }
+
+    pub fn get_keypair(&self) -> libp2p::identity::Keypair {
+        self.p2p_keypair.clone()
+    }
+
+    pub fn get_signing_key(&self) -> SigningKey {
+        self.signing_key.clone()
+    }
+}

crates/common/src/lib.rs

@@ -1,4 +1,5 @@
 pub mod hash_macro;
+pub mod identity;
 pub mod job;
 pub mod job_record;
 pub mod job_trace;

crates/delegator/src/main.rs

@@ -1,10 +1,10 @@
+#![deny(unused_crate_dependencies)]
+
 use futures::StreamExt;
-use libp2p::{
-    gossipsub::Event,
-    identity::{ecdsa, Keypair},
-};
+use libp2p::gossipsub::Event;
 use sharp_p2p_common::{
     hash,
+    identity::IdentityHandler,
     job::Job,
     network::Network,
     topic::{gossipsub_ident_topic, Topic},
@@ -28,8 +28,8 @@ async fn main() -> Result<(), Box<dyn std::error::Error>> {
 
     let private_key =
         hex::decode("018ef9563461ec2d88236d59039babf44c97d8bf6200d01d81170f1f60a78f32")?;
-    let p2p_local_keypair =
-        Keypair::from(ecdsa::Keypair::from(ecdsa::SecretKey::try_from_bytes(&private_key)?));
+    let identity_handler = IdentityHandler::new(private_key);
+    let p2p_local_keypair = identity_handler.get_keypair();
 
     // Generate topic
     let new_job_topic = gossipsub_ident_topic(Network::Sepolia, Topic::NewJob);

crates/executor/src/main.rs

@@ -1,12 +1,10 @@
 #![deny(unused_crate_dependencies)]
 
 use futures::{stream::FuturesUnordered, StreamExt};
-use libp2p::{
-    gossipsub::Event,
-    identity::{ecdsa, Keypair},
-};
+use libp2p::gossipsub::Event;
 use sharp_p2p_common::{
     hash,
+    identity::IdentityHandler,
     job::Job,
     job_record::JobRecord,
     job_trace::JobTrace,
@@ -44,8 +42,8 @@ async fn main() -> Result<(), Box<dyn std::error::Error>> {
 
     let private_key =
         hex::decode("07c7a41c77c7a3b19e7c77485854fc88b09ed7041361595920009f81236d55d2")?;
-    let p2p_local_keypair =
-        Keypair::from(ecdsa::Keypair::from(ecdsa::SecretKey::try_from_bytes(&private_key)?));
+    let identity_handler = IdentityHandler::new(private_key);
+    let p2p_local_keypair = identity_handler.get_keypair();
 
     // Generate topic
     let new_job_topic = gossipsub_ident_topic(Network::Sepolia, Topic::NewJob);