What is the difference between cryptography cryptanalysis cryptology and a cryptosystem

The literal interpetation of "cryptography" is "secret writing". Luis Casillas Ella Rose Ella Rose 19k 5 5 gold badges 50 50 silver badges 97 97 bronze badges. I believe the answer's appeal to etymologies to argue for word usage norms is objectively wrong; language just doesn't work that way.

First, etymology is not destiny the usage of the roots in ancient Greek doesn't determine their usage in English. Second, you can't generally predict the meanings of derived or compound words from their parts. Show 2 more comments. Sign up or log in Sign up using Google. Sign up using Facebook. Sign up using Email and Password. Post as a guest Name. Email Required, but never shown.

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Featured on Meta. Now live: A fully responsive profile. Linked Related Hot Network Questions. The encoding method where the same key both encrypts and decrypts data is known as symmetric encryptio n symmetric cryptography. Only the sender and recipient should have access to this secret key.

If anyone else gains access to the key, they can use it to access the data. Another type of cryptography is asymmetric encryption asymmetric cryptography. This involves using two separate keys for encryption and decryption. The public key, which is available to all, encrypts the data. And the decryption key, which is called a private key, the recipient must keep secret and never share it with anyone.

Hashing means converting an arbitrary amount of data into a fixed-length output of enciphered data. A hash is a mathematical algorithm that serves as a one-way function to transform a random quantity of data into a fixed-length output known as a hash digest.

So, no matter whether you have 10 pages of data or one sentence, the resulting hash size will be the same length. Hashing is practically irreversible. That means hashing can help to keep your data secret. Hash values are unique and no two different input data should ideally generate the same hash value. If someone makes even a seemingly insignificant change in the initial input, the output hash value changes as a result.

Hence, no data tampering goes unnoticed. Summary : Cryptography includes all these algorithms, keys, and methods that one can use to protect data from leaking, eavesdropping, and tampering. Cryptology is a broad, umbrella term that encompasses both cryptography and cryptanalysis.

Cryptology includes the study and practice of both cryptography i. Hence, to understand cryptography vs. Cryptography includes all the legit ways of protecting and revealing the data. That means, the only person with having the corresponding keys can access the data. But cryptanalysis includes all the ways to break the protection, even without having the keys. It also includes studies of finding hash collisions, in which two different inputs produce the same hash value output , which makes data tampering possible.

Imagine you have put a lock on your door. The study of different lock and key mechanisms is cryptography. He may try his luck by using a bunch of duplicate keys. The robber also may try to pick or break the lock with tools like a sharp hairpin, an axe, or even by shooting it with a gun. In the cybersecurity industry, on the other hand, hackers and security researchers carefully analyze the codes and key structure and crack the security mechanism by using mathematics.

They use various tools, techniques, and take the help of quantum computers to break the security mechanism. We all use cryptography in daily life but might not be aware of it. But, it would take billions of years for even our fastest supercomputer to brute-force bit encryptions. Cryptology and cryptography are often used interchangeably, which is partially incorrect.

Cryptology is an umbrella term that incorporates both cryptography and cryptanalysis. So cryptology encompasses both sides of the coin; protecting and securing data and finding ways to break those protections and access the data. Security professionals and hackers alike use cryptology. Security professionals will use it to find vulnerabilities and develop stronger, less vulnerable cryptographic tools, while hackers will generally seek to infiltrate systems and steal data.

The example of Alan Turing and the Enigma Code is a great example of cryptology at work. On one side of the coin, you have the height of cryptography at the time. The Enigma Code was thought to be uncrackable. With each message, there were more than million million million possible combinations. On the other side of the coin, you have the incredible feats of cryptanalysis actually managing to decipher the Enigma, intercept German messages, and greatly aid the Ally war effort.

Cryptology is a fascinating field that focuses on the two opposing techniques of cryptography and cryptanalysis. While cryptography seeks to protect and secure data using techniques like encryption and hashing, cryptanalysis tries to discover vulnerabilities to break cryptographic defenses.

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Jake Harfield is a freelance writer based in Perth, Australia. When he's not writing, he's usually out in the bush photographing local wildlife. You can visit him at www.