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The Diffie-Hellman Key Exchange

    The Diffie-Hellman key exchange (DHKE) is different then most of the cryptography we have been covering in this blog. That is because we

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Symmetric cryptography is split into two types, stream ciphers, and block ciphers. Stream ciphers encrypt one bit at a time and block …

The shift cipher, or the better-known name the Caesar cipher named after Julius Caesar is one of the simplest encryption techniques. In …

Modular Arithmetic     An important question and one that I kept asking if I should dedicate a post to modular arithmetic …

The Substitution Cipher     We will discuss one of the simplest ciphers, the substitution cipher. This cipher has a lot of …

What is Cryptology? The Oxford Dictionary defines Cryptology as: “the study of codes, or the art of writing and solving them”. When …

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The Shift Cipher

The shift cipher, or the better-known name the Caesar cipher named after Julius Caesar is one of the simplest encryption techniques. In fact for those

Modes of Operation for Block Ciphers

Introduction     Today we won’t actually learn about any new math concepts or algorithms. Instead, we will build upon what we have already. Particularly

The RSA Cryptosystem

Introduction     In 1976, Whitfield Diffie and Martin Hellman introduced to the world the concept of public key cryptography also known as asymmetric cryptography.

What is Cryptology

What is Cryptology? The Oxford Dictionary defines Cryptology as: “the study of codes, or the art of writing and solving them”. When some people think