Cryptographic Hash Functions — Intro A hash function uses a variable-length block of input data and produces a fixed-size hash value as output. Hash functions are used in computers to determine if data has been changed or not. An example If you download a program from the internet some vendors provide the MD5 checksum hash…

Rivest-Shamir-Adleman — Intro Asymmetric is also referred to as public key cryptography. Because it makes use of 2 keys, a public key and a private key. In previous chapters we took a look at symmetric ciphers like DES and AES these are referred to as private key cryptography. In this chapter I will…

Advanced Encryption Standard — If you haven’t read the first part: https://medium.com/system-weakness/an-introduction-to-cryptography-symmetric-ciphers-des-15c8f66add1e Intro In this chapter of “An Introduction To Cryptography” we will take a look at Advanced Encryption Standard (AES). In the previous chapter we discussed DES a symmetric cipher. AES is a symmetric block cipher that’s intended to replace DES.

Data Encryption Standard — Intro In this chapter of “An Introduction To Cryptography” we will take a look at symmetric ciphers. This article will focus on a classic symmetric cipher called DES (Data Encryption Standard). Symmetric Ciphers A symmetric cipher uses the same key for encryption and decryption. This key is referred to as a private key…

Cryptography is the practice of securing communication and data through the use of various techniques, such as encryption and decryption. It plays a critical role in modern society, helping to protect sensitive information, such as financial transactions, medical records, and government documents, from unauthorized access or tampering. At its most…