My name is Kenneth and I write cool Mac and iPhone software. This is my personal weblog where I post about stuff I find interesting. I usually write about Mac development, the business of shareware and the Mac community in general.
read more →When coding anti-piracy prevention measures, your goal should be to keep honest users honest. It is important to make the user experience pleasing and simple for your paid customers. While in an ideal world, people would buy everything legally, reality is very different. Most people, if tempted with an easy free way to get your app, […]
Registration Schemes: Asymmetrical Cryptography
One challenge that most developers face when nearing release of their first application is how to implement registration and piracy protection. This three-part article will describe three common types of registration schemes: Serial Numbers, Asymmetrical Cryptographic Keys and Product Activation. Part Two: Asymmetrical Cryptography Asymmetrical Cryptographic Keys are a great way to secure you app, because the […]
Registration Schemes: Serial Numbers
One challenge that most developers face when nearing release of their first application is how to implement registration and piracy protection. This three-part article will describe three common types of registration schemes: Serial Numbers, Asymmetrical Cryptographic Keys and Product Activation. Part One: Serial Numbers Serial numbers are the simplest, most practical option. However, they are also the […]
Hacking mac apps: Direct Mail
Update: I rewrote this post with better language and better explanations. Please read the newer version first. In this post, I will describe how to hack a mac shareware app. The reason for this is to push the developers to create stronger protection, and to show common weaknesses in licensing code. Before each hack is published, […]