In this post under JJWT, I will show with example how to create and parse asymmetric key signed JWT containing claims. Below is the complete code for your reference. Main Class 1 package defaultPackage; 2 import java.security.KeyPair; 3 import java.security.PrivateKey; 4 import java.security.PublicKey; 5 import java.util.Date; 6 import java.util.HashMap; 7 import java.util.Map; 8 9 import…… Continue reading Creating and Parsing a asymmetric key signed JWT containing claims

In this post under JJWT, I will show with example how to create and parse asymmetric key signed JWT. The JWT can contain claims or payload. For our example we will use a JWT containing payload. Below is the complete code for your reference Main Code 1 package defaultPackage; 2 import java.security.KeyPair; 3 import java.security.PrivateKey;…… Continue reading Creating and Parsing a asymmetric key signed JWT containing payload

In this post under JJWT, I will explain with example, how to verify or assert the presence of custom (user created and added) claim in JWT token. JJWT framework provides a method through which1) we can verify whether a custom claim exist in the JWT or not.2) we can verify whether a custom claim’s value…… Continue reading Asserting the presence of a custom claim in JWT

In this post under JJWT, I will show with example how to create and parse a secret key signed JWT containing payload. As mentioned in previous posts we will use an instance of JwtBuilder to construct a JSON Web Token. Below is the code snippet for your reference Snippet 1 1 JwtBuilder jwtBuilder = Jwts.builder();…… Continue reading Creating and Parsing a secret key signed JWT containing payload

In this post under JJWT, I will show with example how to parse unsigned JWT containing plaintext as payload instead of serialized Claims object. As shown in previous post under JJWT, whenever we need to parse a JWT string. We need to create an instance of “JwtParser” as shown below JwtParserBuilder jwtParserBuilder = Jwts.parserBuilder(); JwtParser…… Continue reading Parsing simple unsigned JWT containing plaintext as payload

In this post under JJWT, I will show with example how to generate unsigned JWT containing payload. In previous post under JJWT, I talked about JWT containing claims. So what is the difference between claims and payload. Its simple payload is noting but any String data, whereas claims is a map. Now with the difference…… Continue reading Creating a simple unsigned JSON Web Token containing payload

In this post under JWT, I will show with example how to create and parse a signed JWT containing claims. As mentioned in previous posts we will use an instance of JwtBuilder to construct a JSON Web Token. Below is the code snippet for your reference Snippet 1 1 JwtBuilder jwtBuilder = Jwts.builder(); 2 3…… Continue reading Creating and Parsing a secret key signed JWT containing claims

In this post under JJWT I will show with example how to check whether a JWT is signed or unsigned. JwtParser class has a “isSigned” method which will figure out whether the JWT is signed or not. All we need is to pass the test JWT string as an argument to this method. This method…… Continue reading Checking whether JWT is signed or unsigned

In this post under JJWT, I will show with example how to parse a simple unsigned JSON Web Token containing claims as payload. Below is the complete main code. Main class 1 package defaultPackage; 2 import io.jsonwebtoken.Claims; 3 import io.jsonwebtoken.Header; 4 import io.jsonwebtoken.Jwt; 5 import io.jsonwebtoken.JwtParser; 6 import io.jsonwebtoken.JwtParserBuilder; 7 import io.jsonwebtoken.Jwts; 8 9 public…… Continue reading Parsing simple unsigned JWT containing claims

In this post under JJWT, I will explain how to create a simple unsigned JSON Web Token whose payload is a set of claims. I will be using JJWT framework for this example and all the upcoming examples under JJWT. Below is the complete code for your reference Main Class 1 package defaultPackage; 2 3…… Continue reading Creating a simple unsigned JSON Web Token containing claims