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Using Chi Squared to Crack Codes
This is inspired from the great site, Practical Cryptography which is a really good resource for code making and code breaking. One of their articles is about how we can use the Chi Squared test to...
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Murder in the Maths Department
Murder in the Maths Department A murder has been committed in the maths department! A body has been discovered surrounded by mathematical objects and only the hardworking maths teachers were in...
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International School Code Breaking Challenge!
International School Code Breaking Challenge We’re now running a huge school code breaking competition. There are a total of 7 competitions to enter – each one with a number of codes to crack. Each...
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The One Time Pad – An Uncrackable Code?
The one time pad is a very secure way of encoding messages – so secure in fact that it is unbreakable as long as the agents using it don’t make any mistakes. It was a very popular method of sending...
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Crack the Beale Papers and find a $65 Million buried treasure?
Crack the Beale Papers and find a $65 Million buried treasure? The story of a priceless buried treasure of gold, silver and jewels (worth around $65 million in today’s money) began in January 1822. A...
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Cracking ISBN and Credit Card Codes
Cracking ISBN and Credit Card Codes ISBN codes are used on all books published worldwide. It’s a very powerful and useful code, because it has been designed so that if you enter the wrong ISBN code...
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Crack the code to win $65 million?
Crack the Beale Papers and find a $65 Million buried treasure? The story of a priceless buried treasure of gold, silver and jewels (worth around $65 million in today’s money) began in January 1822. A...
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