Add tty password input (#2503)

* Add tty password input

* Move password from core/service to core/cli

* Fix test build error

* Password should be entered only once if it's for decoding

* Update Cargo.lock from rebuild

substrate/core/service/src/config.rs

@@ -78,6 +78,8 @@ pub struct Configuration<C, G: Serialize + DeserializeOwned + BuildStorage> {
 	pub force_authoring: bool,
 	/// Disable GRANDPA when running in validator mode
 	pub disable_grandpa: bool,
+	/// Node keystore's password
+	pub password: String,
 }
 
 impl<C: Default, G: Serialize + DeserializeOwned + BuildStorage> Configuration<C, G> {
@@ -108,6 +110,7 @@ impl<C: Default, G: Serialize + DeserializeOwned + BuildStorage> Configuration<C
 			offchain_worker: Default::default(),
 			force_authoring: false,
 			disable_grandpa: false,
+			password: "".to_string(),
 		};
 		configuration.network.boot_nodes = configuration.chain_spec.boot_nodes().to_vec();
 

substrate/core/service/src/lib.rs

@@ -142,7 +142,7 @@ impl<Components: components::Components> Service<Components> {
 		let public_key = match keystore.contents()?.get(0) {
 			Some(public_key) => public_key.clone(),
 			None => {
-				let key = keystore.generate("")?;
+				let key = keystore.generate(&config.password)?;
 				let public_key = key.public();
 				info!("Generated a new keypair: {:?}", public_key);
 
@@ -382,7 +382,7 @@ impl<Components: components::Components> Service<Components> {
 		if self.config.roles != Roles::AUTHORITY { return None }
 		let keystore = &self.keystore;
 		if let Ok(Some(Ok(key))) =  keystore.contents().map(|keys| keys.get(0)
-				.map(|k| keystore.load(k, "")))
+				.map(|k| keystore.load(k, &self.config.password)))
 		{
 			Some(key)
 		} else {