A few years back I came up with some DIY rig I designed and built with things that I bought at The Home Depot. However at that time it was not as neatly put together as it is today. The only original pieces I keep are the Sony Alpha A6000 and the suction cup. For this […]

Here I have created a class that does it in two different ways, the first one is, when you create the key, and the other is when you are given the key, valid key sizes are 128, 192, and 256 for AES algorithm. There is some steps to follow before executing the code provied, if […]

With JSON files of around 900 lines, this option is very useful to have an organized view. I highly recommend to check the links, there is a lot of things you can do with Visual Studio Code, my version is 1.10.2, and the following shortcuts are working. Ctrl+K Ctrl+0 Fold (collapse) all regions Ctrl+K Ctrl+J […]

Here is how to do it, the simplest way, to generate the base64 string. No complications with KeyStores or things like that. I must say that I found this code in several places over the Internet. When I tried to run it I had some exceptions, I solved them, at the time of this writing, […]

Today I had to do this for my job, and I think is a good opportunity to share the knowledge. Here is the code, you can simply copy it and paste it in a file called SHA256Hmac.js and run it. let crypto; try {     crypto = require(‘crypto’); } catch (err) {     console.log(‘crypto support […]

If you like cryptography you might know that sometimes you have a byte array which you wish to convert to hexadecimal string. In java, to this day, I haven’t found yet a native class that does it, I’ve spent several minutes on the Internet looking for something like the Base64 class. Turns out Apache commons […]

Recently I was wondering how to generate a private key in Java for a personal project. I found out how to generate the actual key pair with RSA algorithm. Here is the java code for that, a simple class that you can run to check how things work. import java.security.KeyPairGenerator; import java.security.KeyPair; import java.security.PrivateKey; import […]

Recently I needed to run a Fortify scan on a project with several modules. I was told to scan only Java files (*.java) but with the constraint that this files should not be the ones inside test directories (*\test\*) After doing some research and reading the documentation I came up with the following command: “-b” […]

Just a few days ago I needed to do this and I found this useful function. Very simple: var jsonStr = “{“firstName”:”Siry”, “lastName”:”Mazari”}”; console.log(‘JSON String: %s’, jsonStr); var jsonObj = JSON.parse(jsonStr); console.log(‘First Name: %s’, jsonObj.firstName); console.log(‘Last Name: %s’, jsonObj.lastName); The variable jsonStr contains a String representation of a JSON object. The variable jsonObj contains the […]