Encrypt string javascript decrypt php

The documentation for sodium-plus is available on Github. If you'd like a step-by-step tutorial, this dev. Modern browsers now support the crypto. HOW TO? JavaScript string encryption and decryption? ID : viewed : 6 Tags : encryption javascript encryption Top 5 Answer for JavaScript string encryption and decryption?

How about CryptoJS? Why to Avoid CryptoJS? Why is CBC mode bad? Why to Avoid WebCrypto? Why is Libsodium Better? How to Use Libsodium in JavaScript? Do you need to implement a specific protocol? To install sodium-plus, simply run Top 3 video Explaining JavaScript string encryption and decryption?

Next, you'll want to write some JavaScript code to encrypt a message and send it to a server. Let's define two functions. One loads a CryptographyKey object from a hard-coded string n. The other actually encrypts a message.

Next, you'll want to write a function that gathers user input, encrypts it, and sends it to a server. If you're using PHP 7.

However, some distros may incorrectly disable the sodium extension by default. If you're using a framework Symfony, Laravel , your code will look a lot cleaner, but for the sake of illustration, the decryption code will look like this:. When you type in a message and press the button, it will encrypt it and send a hex-encoded string to the server.

The JavaScript code will then grab the plaintext from the JSON response and append it to the output field below the form. We took a lot of shortcuts that you won't want to take in a real system for example: hard-coding the encryption keys, and eschewing error-checking in favor of brevity.

There are 3 things that we should take care about to encrypt-decrypt successfully: 1. Algorithm must be the same 2. Server must know how the cipher is encoded 3. Server must know how to get initialisation vector part from received cipher. Algorithm pair The problem is to found a compatible combination of JavaScript and server side algorithms.

Each group can use different encryption algorithms. I tried lots of different combinations including crypto-js library and different JS-implementations of mcrypt until I finally come to the solution. The problem is that most of the libraries do not document how cipher is combined with vector. And how this combination is encoded uue, base64, utf etc. Thus it can be decrypted with the same library but it is absolutely no way to decrypt it even using the same algorithm in another library.