feat: add examples

Cargo.toml

@@ -12,3 +12,6 @@ categories = ["cryptography"]
 [dependencies]
 base64 = "0.22.1"
 rust_util = "0.6.47"
+
+[dev-dependencies]
+hex = "0.4.3"

examples/generate_keypair.rs

@@ -0,0 +1,42 @@
+use swift_secure_enclave_tool_rs::{
+    generate_ecdsa_keypair, is_secure_enclave_supported, KeyMaterial, KeyPurpose,
+};
+
+fn main() {
+    println!(
+        "Secure Enclave supported: {}",
+        is_secure_enclave_supported().unwrap()
+    );
+
+    let ecdsa_key_material_require_bio = generate_ecdsa_keypair(KeyPurpose::Signing, true).unwrap();
+    print_key_material("Signing key [require bio]", &ecdsa_key_material_require_bio);
+
+    let ecdsa_key_material_no_bio = generate_ecdsa_keypair(KeyPurpose::Signing, true).unwrap();
+    print_key_material("Signing key [no bio]", &ecdsa_key_material_no_bio);
+
+    let ecdsa_key_material_require_bio =
+        generate_ecdsa_keypair(KeyPurpose::KeyAgreement, true).unwrap();
+    print_key_material(
+        "Key agreement key [require bio]",
+        &ecdsa_key_material_require_bio,
+    );
+
+    let ecdsa_key_material_no_bio = generate_ecdsa_keypair(KeyPurpose::KeyAgreement, true).unwrap();
+    print_key_material("Key agreement key [no bio]", &ecdsa_key_material_no_bio);
+}
+
+fn print_key_material(prefix: &str, key_material: &KeyMaterial) {
+    println!("\n{}", prefix);
+    println!(
+        "Public key point:\n{}",
+        hex::encode(&key_material.public_key_point)
+    );
+    println!(
+        "\nPublic key:\n{}",
+        hex::encode(&key_material.public_key_der)
+    );
+    println!(
+        "\nPrivate key representation:\n{}",
+        hex::encode(&key_material.private_key_representation)
+    );
+}

examples/recover_ecdh.rs

@@ -0,0 +1,3 @@
+fn main() {
+    
+}

examples/recover_ecdsa.rs

@@ -0,0 +1,3 @@
+fn main() {
+    
+}