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Caesar shift cipher
Cracking codes
In the first of two articles,
Artur Ekert
takes a tour through the history of codes and the prospects for truly unbreakable quantum cryptography.
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Safety in numbers
Today's digital world with its free flow of information, would not exist without cryptography to guarantee our privacy.
Plus
meets mathematician, author and broadcaster
Simon Singh
to find out about the science of secrecy.
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