Password based encryption and decryption in java

This tutorial is a continuation of our Java security series. In the following example, we will have a simple text file for example and use it to encrypt and decrypt it. Any type of file can be used. The iteration count used in the example is and larger the number it increases the key space. Salt is written in the file itself. When you run these programs, you should first create a file named "plainfile. One successfully run, the first program will create an encrypted version of this input file and the second program will create the decrypted version of the encrypted file.

Your email address will not be published. Notify me of follow-up comments by email. Notify me of new posts by email. Skip to content Encrypt a file using a password with strong AES security. Churchill Contents 1. Introduction 2. Java Imports 3. Generating the AES Key 4. Generate the Initialization Vector IV 5. Encrypting the File 6.

DESedeKeySpec; import org. This example goes a long way regarding some cryptographic functions, but it fouls up on too many others.

The example is using a String as a key. Furthermore, it silently uses the insecure ECB mode encryption. There is no authenticity or integrity control either.

But in general this code is not secure. String can not be converted into byte. In late but why use apache commons for Base Java has base64 built in.

We are using DESede. All the above given steps and concept are same, we just replace algorithms. Base64; import javax. KeyGenerator; import javax. Premraj Premraj Thank you buddy. Can you guide me to some examples of how to use a KeySpec? Here is a sample I made a couple of months ago The class encrypt and decrypt data import java. Hugues Hugues 3 3 silver badges 10 10 bronze badges. So the above code will fail now and then. Also, it's recommended to check against the encrypted password rather than decrypting the encrypted password To use jasypt, if you're using maven, you can include jasypt into your pom.

Pankaj Lilan 3, 1 1 gold badge 27 27 silver badges 47 47 bronze badges. Govind Kumar Govind Kumar Sign up or log in Sign up using Google. Sign up using Facebook. Sign up using Email and Password.