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Crypto Review of Curve25519.java & Crypto.java

By DoctorEvil on Nextcoin.org

Sponsored by MSIN on BitcoinTalk.org

TL;DR

NXT's Crypto.java and Curve25519.java look kosher aside from a signing bug that is currently being worked around.

General Methodology

During the past days, this great article by Sam Pruden has been making the rounds around the gamedev community. While the article provides an in-depth analysis, its a bit easy to miss the point and exert the wrong conclusions from it. As such, and in many cases, users unfamiliar with Godot internals have used it points such as following:

Godot C# support is inefficient
Godot API and binding system is designed around GDScript
Godot is not production ready

In this brief article, I will shed a bit more light about how the Godot binding system works and some detail on the Godot

	package starling.extensions
	{
	import flash.geom.Point;

	import starling.display.Image;
	import starling.display.Sprite;
	import starling.textures.Texture;

	/* Usage:
	var gauge:Gauge = new Gauge(texture);

	————————————————————————————————————————————————————————————————————————————————————————————————————
	BBEdit / BBEdit-Lite / TextWrangler Regular Expression Guide Modified: 2018/08/10 01:19
	————————————————————————————————————————————————————————————————————————————————————————————————————

	NOTES:

	The PCRE engine (Perl Compatible Regular Expressions) is what BBEdit and TextWrangler use.

	Items I'm unsure of are marked '# PCRE?'. The list while fairly comprehensive is not complete.

	/**
	* Copyright (c) 2013 Amos Laber
	*
	* Permission is hereby granted, free of charge, to any person obtaining a copy
	* of this software and associated documentation files (the "Software"), to deal
	* in the Software without restriction, including without limitation the rights
	* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
	* copies of the Software, and to permit persons to whom the Software is
	* furnished to do so, subject to the following conditions:
	*

	# alias to edit commit messages without using rebase interactive
	# example: git reword commithash message
	reword = "!f() {\n GIT_SEQUENCE_EDITOR=\"sed -i 1s/^pick/reword/\" GIT_EDITOR=\"printf \\\"%s\\n\\\" \\\"$2\\\" >\" git rebase -i \"$1^\";\n git push -f;\n}; f"

	# sort list of git repos with gh cli
	gh repo list --limit 300 --json name -q '.[].name' \| sort

	# count total commits in a repo
	git rev-list --all --count

	Disable REST Api without Plugins
	https://rudrastyh.com/wordpress/disable-rest-api.html

	Add featured image & alt text to WP REST API
	https://allisontarr.com/2021/10/13/add-featured-image-alt-text-to-wp-rest-api/

	Allow ALL cross origin requests to WordPress REST API
	https://github.com/Shelob9/rest-all-cors

	WordPress theme using Rest API and Vue.js

	// Copyright 2017, the Flutter project authors. Please see the AUTHORS file
	// for details. All rights reserved. Use of this source code is governed by a
	// BSD-style license that can be found in the LICENSE file.

	import 'dart:math';
	import 'package:flutter/material.dart';

	void main() {
	runApp(new MyApp());
	}

	import symbolSdk from "/path/to/symbolsdk/javascript/src/index.js";

	const facade = new symbolSdk.facade.SymbolFacade("testnet");

	type PrivateKey = InstanceType<typeof symbolSdk.PrivateKey>;
	const privateKey: PrivateKey = symbolSdk.PrivateKey.random();
	/*
	const privateKey: PrivateKey = new symbolSdk.PrivateKey(
	"677035391CD3701293D385F037BA32796252BB7CE180B00B582DD9B20AAAD7F0"
	);