Fix the --key generation (#475)

substrate/substrate/keystore/src/lib.rs

@@ -156,8 +156,19 @@ impl Store {
 	// TODO: Remove this
 	pub fn generate_from_seed(&mut self, seed: &str) -> Result<Pair> {
 		let mut s: [u8; 32] = [' ' as u8; 32];
-		let len = ::std::cmp::min(32, seed.len());
-		&mut s[..len].copy_from_slice(&seed.as_bytes()[..len]);
+		
+		let was_hex = if seed.len() == 66 && &seed[0..2] == "0x" {
+			if let Ok(d) = hex::decode(&seed[2..]) {
+				s.copy_from_slice(&d);
+				true
+			} else { false }
+		} else { false };
+
+		if !was_hex {
+			let len = ::std::cmp::min(32, seed.len());
+			&mut s[..len].copy_from_slice(&seed.as_bytes()[..len]);
+		}
+
 		let pair = Pair::from_seed(&s);
 		self.additional.insert(pair.public(), s);
 		Ok(pair)

substrate/substrate/service/src/lib.rs

@@ -208,7 +208,7 @@ impl<Components> Service<Components>
 					chain,
 					author,
 					rpc_config.clone(),
-					)
+				)
 			};
 			(
 				maybe_start_server(config.rpc_http, |address| rpc::start_http(address, handler()))?,
@@ -227,12 +227,12 @@ impl<Components> Service<Components>
 					url: url,
 					on_connect: Box::new(move || {
 						telemetry!("system.connected";
-								   "name" => name.clone(),
-								   "implementation" => impl_name.clone(),
-								   "version" => version.clone(),
-								   "config" => "",
-								   "chain" => chain_name.clone(),
-								   );
+							"name" => name.clone(),
+							"implementation" => impl_name.clone(),
+							"version" => version.clone(),
+							"config" => "",
+							"chain" => chain_name.clone(),
+						);
 					}),
 				}))
 			},