Inheritance #

HMACContext #

is_refcounted, is_instantiable, core, not_builtin_classes

Used to create an HMAC for a message using a key.

The HMACContext class is useful for advanced HMAC use cases, such as streaming the message as it supports creating the message over time rather than providing it all at once.

GDScript

extends Node
var ctx = HMACContext.new()

func _ready():
    var key = "supersecret".to_utf8_buffer()
    var err = ctx.start(HashingContext.HASH_SHA256, key)
    assert(err == OK)
    var msg1 = "this is ".to_utf8_buffer()
    var msg2 = "super duper secret".to_utf8_buffer()
    err = ctx.update(msg1)
    assert(err == OK)
    err = ctx.update(msg2)
    assert(err == OK)
    var hmac = ctx.finish()
    print(hmac.hex_encode())

C#

using Godot;
using System.Diagnostics;

public partial class MyNode : Node
{
    private HmacContext _ctx = new HmacContext();

    public override void _Ready()
    {
        byte[] key = "supersecret".ToUtf8Buffer();
        Error err = _ctx.Start(HashingContext.HashType.Sha256, key);
        Debug.Assert(err == Error.Ok);
        byte[] msg1 = "this is ".ToUtf8Buffer();
        byte[] msg2 = "super duper secret".ToUtf8Buffer();
        err = _ctx.Update(msg1);
        Debug.Assert(err == Error.Ok);
        err = _ctx.Update(msg2);
        Debug.Assert(err == Error.Ok);
        byte[] hmac = _ctx.Finish();
        GD.Print(hmac.HexEncode());
    }
}

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