As well as all the spy themed projects I put together last month for the First Coding Facebook page, I also set myself a personal task of developing an unbreakable cipher with the minimal amount of code. It’s hard, really hard but have learnt so much and so took it along to the Secret Army Exhibition. Conclusion, my cipher is moderately secure but came away with some great ideas including a message authentication flag to prevent tampering during transmission. I love projects that lead on to people and places like this. Every project tells a story.