diff --git a/swift-secure-enclave-tool.swift b/swift-secure-enclave-tool.swift
index 7e8f4e5..697083e 100644
--- a/swift-secure-enclave-tool.swift
+++ b/swift-secure-enclave-tool.swift
@@ -11,8 +11,8 @@ func isSupportSecureEnclave() -> Bool {
 }
 
 func generateSecureEnclaveP256KeyPair(sign: Bool, requireBio: Bool) -> String {
-    var error: Unmanaged<CFError>? = nil;
-    let accessControlCreateFlags: SecAccessControlCreateFlags;
+    var error: Unmanaged<CFError>? = nil
+    let accessControlCreateFlags: SecAccessControlCreateFlags
     if (requireBio) {
         accessControlCreateFlags = [.privateKeyUsage, .biometryCurrentSet]
     } else {
@@ -30,7 +30,7 @@ func generateSecureEnclaveP256KeyPair(sign: Bool, requireBio: Bool) -> String {
         if (sign) {
             let privateKeyReference = try SecureEnclave.P256.Signing.PrivateKey.init(
                accessControl: accessCtrl
-            );
+            )
             let publicKeyBase64 = privateKeyReference.publicKey.x963Representation.base64EncodedString()
             let publicKeyPem = privateKeyReference.publicKey.derRepresentation.base64EncodedString()
             let dataRepresentationBase64 = privateKeyReference.dataRepresentation.base64EncodedString()
@@ -38,7 +38,7 @@ func generateSecureEnclaveP256KeyPair(sign: Bool, requireBio: Bool) -> String {
         } else {
             let privateKeyReference = try SecureEnclave.P256.KeyAgreement.PrivateKey.init(
                accessControl: accessCtrl
-            );
+            )
             let publicKeyBase64 = privateKeyReference.publicKey.x963Representation.base64EncodedString()
             let publicKeyPem = privateKeyReference.publicKey.derRepresentation.base64EncodedString()
             let dataRepresentationBase64 = privateKeyReference.dataRepresentation.base64EncodedString()
@@ -50,7 +50,7 @@ func generateSecureEnclaveP256KeyPair(sign: Bool, requireBio: Bool) -> String {
 }
 
 func recoverSecureEnclaveP256PublicKeyEcsign(privateKeyDataRepresentation: String) -> String {
-    return recoverSecureEnclaveP256PublicKey(privateKeyDataRepresentation: privateKeyDataRepresentation, sign: true);
+    return recoverSecureEnclaveP256PublicKey(privateKeyDataRepresentation: privateKeyDataRepresentation, sign: true)
 }
 
 func recoverSecureEnclaveP256PublicKey(privateKeyDataRepresentation: String, sign: Bool) -> String {
@@ -60,7 +60,7 @@ func recoverSecureEnclaveP256PublicKey(privateKeyDataRepresentation: String, sig
        return "err:private key base64 decode failed"
     }
     do {
-        let context = LAContext();
+        let context = LAContext()
         if (sign)  {
             let privateKeyReference =  try SecureEnclave.P256.Signing.PrivateKey(
                 dataRepresentation: privateKeyDataRepresentation,
@@ -97,7 +97,7 @@ func computeSecureEnclaveP256Ecsign(privateKeyDataRepresentation: String, conten
        return "err:content base64 decode failed"
     }
     do {
-        let context = LAContext();
+        let context = LAContext()
         let p =  try SecureEnclave.P256.Signing.PrivateKey(
             dataRepresentation: privateKeyDataRepresentation,
             authenticationContext: context
@@ -124,7 +124,7 @@ func computeSecureEnclaveP256Ecdh(privateKeyDataRepresentation: String, ephemera
        return "err:ephemeral public key base64 decode failed"
     }
     do {
-        let context = LAContext();
+        let context = LAContext()
         let p =  try SecureEnclave.P256.KeyAgreement.PrivateKey(
             dataRepresentation: privateKeyDataRepresentation,
             authenticationContext: context
@@ -143,7 +143,7 @@ func computeSecureEnclaveP256Ecdh(privateKeyDataRepresentation: String, ephemera
 
 func readArgumentAsBool(index: Int, defaultValue: Bool) -> Bool {
     if CommandLine.arguments.count >= index + 1 {
-        let val = CommandLine.arguments[index];
+        let val = CommandLine.arguments[index]
         if (val == "true" || val == "yes" || val == "on" || val == "1") {
             return true
         }
@@ -153,7 +153,7 @@ func readArgumentAsBool(index: Int, defaultValue: Bool) -> Bool {
 }
 
 func exitWith(_ response: String) {
-    print(response);
+    print(response)
     if (response.hasPrefix("ok:")) {
         exit(0)
     } else {
@@ -166,7 +166,7 @@ if (CommandLine.arguments.count == 1) {
     exitWith("err:require one argument")
 }
 
-let command = CommandLine.arguments[1];
+let command = CommandLine.arguments[1]
 
 if (command == "is_support_secure_enclave") {
     exitWith("ok:\(isSupportSecureEnclave())")
@@ -218,7 +218,7 @@ if (command == "compute_secure_enclave_p256_ecdh") {
     let response =  computeSecureEnclaveP256Ecdh(
         privateKeyDataRepresentation: CommandLine.arguments[2],
         ephemeraPublicKey: CommandLine.arguments[3]
-    );
+    )
     exitWith(response)
 }