Looking at a few of the oldest known ciphers, which demonstrate the fundamentals of encryption.
History and technology of email encryption
Encryption 101: Understand how encryption has evolved
This post will focus on a columnar transposition cipher – a slightly more advanced transposition cipher that produces very different results.
The basic idea of a substitution cipher is a simple one: take one letter in your message, let’s say ‘A’, and replace it with a different letter, such as ‘E’. Sounds familiar?
Encryption 101: The next encryption revolution
Regardless of what you make of the ethics of the Snowden revelations from 2013, the one thing that can be said confidently is that they started a global discussion about the safety and security of our data.
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