12/3/2023 0 Comments Nodejs crypto compare hash![]() ![]() Hash is widely used for storing your password in the database. However, we use “hash” as a noun and a verb and we say “hashing” when we want to say of the process of hash. The term “hash” is a bit more confusing than the case of encryption because even if you open the Oxford English Dictionary, you can‘t find an accurate definition that matches the meaning we use it in computer science. The two hashed texts will be completely different even when the input texts are very similar-even if they are one-letter different. Which means that once you’ve hashed your texts, it’s so hard to turn it back into its original text…almost impossible. Unlike encryption or ciphering, hash is irreversible. The common algorithms used for encryption are AES and PGP. If you’re given the same plain text, same key, and same algorithm, the ciphered text will be always the same. The longer your plain text, the longer the cipher. In encryption, the character length of cipher is not fixed. Asymmetric Encryption or Behind the Scenes of SSL Cryptography If you want to know more detail about symmetric and asymmetric encryption, please check out Symmetric vs. To sum up, at first the server and the client generate temporary pre-shared key in a way of asymmetric encryption, and once that key is generated they communicate symmetrically. In SSL, the example mentioned above, it uses a hybrid system of both symmetric and asymmetric encryption. The private key can be only used by someone who decrypts a cipher. In asymmetric encryption, you use two different keys: one (public key) for encrypting used by sender and another(private key) for decrypting used by recipient. This one key is called pre-shared key, and usually available to anyone on the internet so that they can freely exchange their message or data in a secret way. Symmetric encryption is a way in which only one key is used for encrypting and decrypting, and by both the server and the client. Based on the number of key being used, encryption varies in two ways: symmetric and asymmetric. Ideally, you don’t want to submit any of your information at not-SSL websites, especially your credit card information because it might be stolen and abused.Ī key is used and shared between sender and recipient on the process of encryption and decryption. Usually, emails are also exchanged in an encrypted way, TLS or SSL. And the online store on their server decrypt your credit card information into its original numeral data so that they can verify payment. ![]() ![]() In order to avoid someone steals that information, you encrypt it. During the process of purchase you typically have to submit your credit card information. Imagine you found nice shoes at the online store and decided to buy them. SSL enables the server and the browser communicate privately by encrypting the all date exchanged between them. And the best example of encryption is Secure Sockets Layer, or also known as SSL for short. The reason why you want to encrypt a message is to prevent someone reading your message during delivery. In order to avoid the confusion, probably we better use “cipher” over “encryption.” Yet, it seems that “encryption” is to be used only when you encrypt and decrypt, but not when meaning a hash. If “encrypt” can be defined as “to convert a text into a one that nobody can understand with a cryptography,” hashing would be also a type of encryption. Cipher can be also used as verb, so encryption can be also said as ciphering. Encryption (Cipher)Įncryption is a reversible technique of cryptography, which meant that you can reverse an encrypted data back into a original text or data. Therefore, when we talk about a cryptography, we can never say “crypt” unless you actually also want to talk about a chamber.Īs a whole, both encryption and hash are types of crypto, but they surely play a different role and are for different purpose. And Crypto is a shorthand for cryptography, or being concealed or secret. Oxford English Dictionary defines crypt as an underground room beneath a church. Encryption or Hash? Or Cipher? Wait, is it Salt?įirst stuff, crypt and crypto are different terms. Although obviously that song has nothing to do with this article except it’s a “hash” with an “u” for the “a”, I am going to examine the simple use of encryption in Node.js, which is sometimes interchangeably called hash. I have not yet decided which is better out of Girl’s Generation and Apink-and have no intension to judge-however, among the songs from the Apink, the one I like the most is Hush. When I told my friend about it and told him that Girl’s Generation is my favorite, opposing my opinion he recommended me of one ladies idle group called Apink. About two years ago, I came to be interested in K-pop musics. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |