We have always been been intrigued by keeping secrets and uncovering the secrets of others, whether that’s childhood secret messages, or secrets and codebreaking of national importance.
It’s all in the cipher
Imagine that Bob and Alice wish to secretly communicate, and Eve, who wishes to listen in. Here “plain text” refers to the original message, and “cipher text” as the coded message.
There are two ways of creating the cipher text:
- Having an algorithm (a cipher) that only Bob and Alice know, so that…
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