Inheritance #

AESContext #

is_refcounted, is_instantiable, core, not_builtin_classes

Provides access to AES encryption/decryption of raw data.

This class holds the context information required for encryption and decryption operations with AES (Advanced Encryption Standard). Both AES-ECB and AES-CBC modes are supported.

GDScript

extends Node

var aes = AESContext.new()

func _ready():
    var key = "My secret key!!!" # Key must be either 16 or 32 bytes.
    var data = "My secret text!!" # Data size must be multiple of 16 bytes, apply padding if needed.
    # Encrypt ECB
    aes.start(AESContext.MODE_ECB_ENCRYPT, key.to_utf8_buffer())
    var encrypted = aes.update(data.to_utf8_buffer())
    aes.finish()
    # Decrypt ECB
    aes.start(AESContext.MODE_ECB_DECRYPT, key.to_utf8_buffer())
    var decrypted = aes.update(encrypted)
    aes.finish()
    # Check ECB
    assert(decrypted == data.to_utf8_buffer())

    var iv = "My secret iv!!!!" # IV must be of exactly 16 bytes.
    # Encrypt CBC
    aes.start(AESContext.MODE_CBC_ENCRYPT, key.to_utf8_buffer(), iv.to_utf8_buffer())
    encrypted = aes.update(data.to_utf8_buffer())
    aes.finish()
    # Decrypt CBC
    aes.start(AESContext.MODE_CBC_DECRYPT, key.to_utf8_buffer(), iv.to_utf8_buffer())
    decrypted = aes.update(encrypted)
    aes.finish()
    # Check CBC
    assert(decrypted == data.to_utf8_buffer())

C#

using Godot;
using System.Diagnostics;

public partial class MyNode : Node
{
    private AesContext _aes = new AesContext();

    public override void _Ready()
    {
        string key = "My secret key!!!"; // Key must be either 16 or 32 bytes.
        string data = "My secret text!!"; // Data size must be multiple of 16 bytes, apply padding if needed.
        // Encrypt ECB
        _aes.Start(AesContext.Mode.EcbEncrypt, key.ToUtf8Buffer());
        byte[] encrypted = _aes.Update(data.ToUtf8Buffer());
        _aes.Finish();
        // Decrypt ECB
        _aes.Start(AesContext.Mode.EcbDecrypt, key.ToUtf8Buffer());
        byte[] decrypted = _aes.Update(encrypted);
        _aes.Finish();
        // Check ECB
        Debug.Assert(decrypted == data.ToUtf8Buffer());

        string iv = "My secret iv!!!!"; // IV must be of exactly 16 bytes.
        // Encrypt CBC
        _aes.Start(AesContext.Mode.EcbEncrypt, key.ToUtf8Buffer(), iv.ToUtf8Buffer());
        encrypted = _aes.Update(data.ToUtf8Buffer());
        _aes.Finish();
        // Decrypt CBC
        _aes.Start(AesContext.Mode.EcbDecrypt, key.ToUtf8Buffer(), iv.ToUtf8Buffer());
        decrypted = _aes.Update(encrypted);
        _aes.Finish();
        // Check CBC
        Debug.Assert(decrypted == data.ToUtf8Buffer());
    }
}

Members #

Methods #

Annotations #

Constants #

const MODE_ECB_ENCRYPT = 0 enum Mode#

AES electronic codebook encryption mode.

const MODE_ECB_DECRYPT = 1 enum Mode#

AES electronic codebook decryption mode.

const MODE_CBC_ENCRYPT = 2 enum Mode#

AES cipher blocker chaining encryption mode.

const MODE_CBC_DECRYPT = 3 enum Mode#

AES cipher blocker chaining decryption mode.

const MODE_MAX = 4 enum Mode#

Maximum value for the mode enum.

Constructors #

Enums #

Mode#

Operators #

Signals #

Theme Items #

Tutorials #