[Doc] Update Crypto example

- Removed redundant new() initializations
- removed _ready and node
- improved readability

doc/classes/Crypto.xml

@@ -8,29 +8,31 @@
 		Currently, this includes asymmetric key encryption/decryption, signing/verification, and generating cryptographically secure random bytes, RSA keys, HMAC digests, and self-signed [X509Certificate]s.
 		[codeblocks]
 		[gdscript]
-		extends Node
-
 		var crypto = Crypto.new()
-		var key = CryptoKey.new()
-		var cert = X509Certificate.new()
 
-		func _ready():
 		# Generate new RSA key.
-		    key = crypto.generate_rsa(4096)
+		var key = crypto.generate_rsa(4096)
+
 		# Generate new self-signed certificate with the given key.
-		    cert = crypto.generate_self_signed_certificate(key, "CN=mydomain.com,O=My Game Company,C=IT")
+		var cert = crypto.generate_self_signed_certificate(key, "CN=mydomain.com,O=My Game Company,C=IT")
+
 		# Save key and certificate in the user folder.
 		key.save("user://generated.key")
 		cert.save("user://generated.crt")
+
 		# Encryption
 		var data = "Some data"
 		var encrypted = crypto.encrypt(key, data.to_utf8_buffer())
+
 		# Decryption
 		var decrypted = crypto.decrypt(key, encrypted)
+
 		# Signing
 		var signature = crypto.sign(HashingContext.HASH_SHA256, data.sha256_buffer(), key)
+
 		# Verifying
 		var verified = crypto.verify(HashingContext.HASH_SHA256, data.sha256_buffer(), signature, key)
+
 		# Checks
 		assert(verified)
 		assert(data.to_utf8_buffer() == decrypted)
@@ -39,35 +41,34 @@
 		using Godot;
 		using System.Diagnostics;
 
-		public partial class MyNode : Node
+		Crypto crypto = new Crypto();
-		{
-		    private Crypto _crypto = new Crypto();
-		    private CryptoKey _key = new CryptoKey();
-		    private X509Certificate _cert = new X509Certificate();
 
-		    public override void _Ready()
-		    {
 		// Generate new RSA key.
-		        _key = _crypto.GenerateRsa(4096);
+		CryptoKey key = crypto.GenerateRsa(4096);
+
 		// Generate new self-signed certificate with the given key.
-		        _cert = _crypto.GenerateSelfSignedCertificate(_key, "CN=mydomain.com,O=My Game Company,C=IT");
+		X509Certificate cert = crypto.GenerateSelfSignedCertificate(key, "CN=mydomain.com,O=My Game Company,C=IT");
+
 		// Save key and certificate in the user folder.
-		        _key.Save("user://generated.key");
+		key.Save("user://generated.key");
-		        _cert.Save("user://generated.crt");
+		cert.Save("user://generated.crt");
+
 		// Encryption
 		string data = "Some data";
-		        byte[] encrypted = _crypto.Encrypt(_key, data.ToUtf8Buffer());
+		byte[] encrypted = crypto.Encrypt(key, data.ToUtf8Buffer());
+
 		// Decryption
-		        byte[] decrypted = _crypto.Decrypt(_key, encrypted);
+		byte[] decrypted = crypto.Decrypt(key, encrypted);
+
 		// Signing
-		        byte[] signature = _crypto.Sign(HashingContext.HashType.Sha256, Data.Sha256Buffer(), _key);
+		byte[] signature = crypto.Sign(HashingContext.HashType.Sha256, Data.Sha256Buffer(), key);
+
 		// Verifying
-		        bool verified = _crypto.Verify(HashingContext.HashType.Sha256, Data.Sha256Buffer(), signature, _key);
+		bool verified = crypto.Verify(HashingContext.HashType.Sha256, Data.Sha256Buffer(), signature, key);
+
 		// Checks
 		Debug.Assert(verified);
 		Debug.Assert(data.ToUtf8Buffer() == decrypted);
-		    }
-		}
 		[/csharp]
 		[/codeblocks]
 	</description>