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Encrypt And Decrypt Data In A Golang Application With The Crypto Packages

Being able to encrypt and decrypt data within an application is very useful for a lot of circumstances. Let’s not confuse encryption and decryption with hashing like that found in a bcrypt library, where a hash is only meant to transform data in one direction.

Not too long ago I wrote about in a previous article how to encrypt and decrypt data using Node.js. This was partially inspired by me learning how to build software wallets for cryptocurrencies and encrypting the sensitive information. However, what if we wanted to use Go instead of Node.js?

We’re going to take a look at encrypting data and then decrypting it within a Go application by using the already available crypto packages.

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Encrypt And Decrypt Data In Node.js With The Crypto Library

As you’ve probably noticed from the previous few articles, I’ve been doing a lot of development around cryptocurrency wallets using Node.js. Up until now, I’ve only been writing about interacting with different currencies. However, I haven’t discussed how to safely store your wallet information.

When it comes to storing anything sensitive, whether it be cryptocurrency secrets or something else, you must do so safely and securely. For example, the data must be encrypted at rest and decrypted when used.

We’re going to see how to encrypt data with a passphrase using Node.js and decrypt it using that same passphrase when necessary.

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Build A Password Manager For Android And iOS Using Ionic 2

Have you ever wanted to build your own password manager? Maybe you don’t trust the password management tools that already exist, or maybe you just want the experience. I personally use the tool 1Password, but many of my friends don’t trust the applications that exist on the market. It is a valid concern that they have. What if the password managers that exist are using an ancient or obsolete DES specification or similar, rather than the modern AES? What if the master passwords are not being hashed with a strong Bcrypt algorithm?

Not too long ago we created a password manager using the NativeScript framework, but what if we wanted to build one with a different technology.

We’re going to see how to build a password manager that makes use of the AES specification using Ionic 2 and Angular. This application will work for both Android and iOS and look great on both.

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Build A Password Manager For iOS And Android Using NativeScript

There are many password managers on the market right now for Android and iOS. I personally use a mobile application called 1Password, but what if you’re the type of person who doesn’t trust these companies with your sensitive passwords? The solution to this would be to build your own password management application, one where you know the algorithms and the logic. I mean, what if the available password managers are using DES encryption when they should be using AES? Best thing to do would be to do the job yourself.

We’re going to see how to develop a password manager for iOS and Android using the NativeScript framework by Progress Software. The application that we build will be completely functional, have a polished UI, and use all the best practices for cipher text and mobile development.

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Implement AES Strength Encryption With JavaScript

I recently started playing around with the Dropbox Datastore JavaScript API and decided that I wanted an extra layer of security in the data I store on the Dropbox server. I figured the best way to accomplish this would be to encrypt all data in my application before syncing.

It took me a while to find an encryption library that I liked, but in the end, I chose the JavaScript library Forge. This library has plenty of cryptography tools that extend beyond just AES encryption, thus making it very worthy to check out.

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