Thus, anyone who knows the method will be able to decrypt the message easily.įor example, a simple word like “cat,” will be encrypted as “fdw,” if you shift each letter three letters in the alphabet. Caesar cipher is a substitution cipher in which alphabets shift their order by a fixed number of positions.Įncrypting and decrypting Caesar cipher is easy, as the method is fixed and no key is required. Some examples of symmetric key algorithms are:Ĭaesar cipher is one example of symmetric key cryptography, and it’s one of the oldest and easiest ways to implement cryptography. Stream cipher uses XOR for converting plaintext into ciphertext. Stream ciphers, on the other hand, use Ciphertext Feedback (CFB) and Output Feedback (OFB) modes, which convert plain text into ciphertext by taking an input of 1 byte at once, making stream cipher faster than block cipher. Block ciphers are relatively slower than stream ciphers, as a block of text needs to be covered, encrypted, and decrypted. These take text inputs and convert them into ciphertext by taking a block of text and generating a ciphertext of the same size. Symmetric key cryptography has two method types, which are used to convert plain text to ciphertext: block ciphers and stream ciphers.īlock ciphers use the algorithm mode of Electronic Code Block ( ECB) and Cipher Code Block ( CBC).

It’s used primarily for encrypting large amounts of data. The data is converted into a form that is not understood by anyone, making the data secure from an attacker. It’s also referred to as private-key cryptography, as well as secret-key, shared-key, one-key, and private-key encryption.

It mainly involves using a single key, called a secret key, used for encrypting and decrypting the data. Symmetric key cryptography is one of the fastest and easiest ways to decrypt and encrypt messages. Let’s look at each one in-depth! Symmetric key cryptography There are three primary types of cryptography: What are the different types of cryptography? It’s used everywhere in today’s world, from securing day-to-day communication in social media platforms to securing banking transaction activity for online e-commerce. Novem5 min read 1605 What is cryptography?Ĭryptography is the art of creating a secure communication channel by encrypting and decrypting data using code, meaning that no one other than the destined person can see the transmitted data.Ĭryptography mainly uses mathematical principles and a series of formulas and algorithms to encrypt messages so that decrypting these messages becomes impossible. Kiran Sethumadhavan Follow I am a cyber security enthusiast who loves learning new technology that can keep the internet a secure place.

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