feat: add secure_enclave.swift

secure_enclave.swift

@@ -0,0 +1,23 @@
+// https://www.andyibanez.com/posts/cryptokit-secure-enclave/
+// import Swift import Foundation 
+// import Security 
+import CryptoKit 
+
+let se = SecureEnclave.isAvailable;
+print("Supports SE: \(se)");
+
+var error: Unmanaged<CFError>? = nil;
+guard let accessCtrl = SecAccessControlCreateWithFlags(
+    nil,
+    kSecAttrAccessibleWhenUnlockedThisDeviceOnly,
+    [.privateKeyUsage, .biometryCurrentSet],
+    &error
+) else {
+        throw error!.takeRetainedValue() as Swift.Error;
+} var privateKeyReference = try CryptoKit.SecureEnclave.P256.KeyAgreement.PrivateKey.init(
+    accessControl: accessCtrl
+);
+
+print("Private key reference: \(privateKeyReference)");
+print("Private key reference - publicKey: \(privateKeyReference.publicKey)");
+print("Private key reference - dataRepresentation: \(privateKeyReference.dataRepresentation)");