diff --git a/Package.swift b/Package.swift
index 884f257..566dbe4 100644
--- a/Package.swift
+++ b/Package.swift
@@ -6,7 +6,7 @@ import PackageDescription
 let package = Package(
     name: "MagicExtensions",
     platforms: [
-        .iOS(.v10),
+        .iOS(.v13),
         .macOS(.v10_12)
     ],
     products: [
@@ -17,6 +17,9 @@ let package = Package(
         .library(
             name: "MagicExt-OIDC",
             targets: ["MagicExt-OIDC"]),
+        .library(
+            name: "MagicExt-GDKMS",
+            targets: ["MagicExt-GDKMS"]),
     ],
     dependencies: [
         .package(url: "https://github.com/magiclabs/magic-ios.git", from:"4.0.0"),
@@ -34,11 +37,16 @@ let package = Package(
             dependencies: [
                 .product(name: "MagicSDK", package: "magic-ios"),
             ]),
+        .target(
+            name: "MagicExt-GDKMS",
+            dependencies: [
+                .product(name: "MagicSDK", package: "magic-ios"),
+            ]),
         .testTarget(
             name: "MagicExt-OAuthTests",
             dependencies: ["MagicExt-OAuth"]),
         .testTarget(
             name: "MagicExt-OIDCTests",
-            dependencies: ["MagicExt-OIDC"]),
+            dependencies: ["MagicExt-OIDC"])
     ]
 )
diff --git a/Sources/MagicExt-GDKMS/Core/GDKMSExtension.swift b/Sources/MagicExt-GDKMS/Core/GDKMSExtension.swift
new file mode 100644
index 0000000..ecd6108
--- /dev/null
+++ b/Sources/MagicExt-GDKMS/Core/GDKMSExtension.swift
@@ -0,0 +1,31 @@
+//
+//  OIDCExtension.swift
+//  MagicSDK
+//
+//  Created by Jerry Liu on 10/16/22.
+//
+
+import Foundation
+import MagicSDK_Web3
+import MagicSDK
+
+public class GDKMSExtension: BaseModule {
+
+    public func encryptWithPrivateKey (_ message:String, response: @escaping Web3ResponseCompletion<String> ) {
+        let request = RPCRequest<[String]>(method: GDKMSMethod.magic_auth_encrypt_v1.rawValue, params: [message])
+        self.provider.send(request: request, response: response)
+    }
+    
+    public func decryptWithPrivateKey (_ cipherText: String, response: @escaping Web3ResponseCompletion<String> ) {
+        let request = RPCRequest<[String]>(method: GDKMSMethod.magic_auth_decrypt_v1.rawValue, params: [cipherText])
+        self.provider.send(request: request, response: response)
+    }
+}
+
+extension Magic {
+    
+    public var gdkms: GDKMSExtension {
+        print("\(self.MA_EXTENSION_ONLY_MSG)")
+        return GDKMSExtension(rpcProvider: self.rpcProvider)
+    }
+}
diff --git a/Sources/MagicExt-GDKMS/Types/GDKMSMEthod.swift b/Sources/MagicExt-GDKMS/Types/GDKMSMEthod.swift
new file mode 100644
index 0000000..916f27a
--- /dev/null
+++ b/Sources/MagicExt-GDKMS/Types/GDKMSMEthod.swift
@@ -0,0 +1,12 @@
+//
+//  OIDCMethod.swift
+//
+//
+//  Created by Jerry Liu on 05/24/23.
+//
+
+import Foundation
+internal enum GDKMSMethod: String, CaseIterable {
+    case magic_auth_encrypt_v1
+    case magic_auth_decrypt_v1
+}