Serious Security: What 2000 years of cryptography can teach us

Minimalist · Jan 20, 2019

These days, a lot of your data gets encrypted when you save it to disk or send it over the internet.

The data gets decrypted again when you read it back in or after it’s received at the other end.

For that, you need some sort of cryptographic algorithm – what’s known in the jargon as a symmetric cipher or secret-key encryption.

Symmetric ciphers use the digital equivalent of a key, typically a string of characters, to lock and unlock the data.

In this article, we’ll take a journey through the history of symmetric ciphers during the pen-and-paper era, before mechanical and electronic encryption devices came onto the scene.
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https://nakedsecurity.sophos.com/20...what-2000-years-of-cryptography-can-teach-us/

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Serious Security: What 2000 years of cryptography can teach us

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Serious Security: What 2000 years of cryptography can teach us

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