cLYkKScj

1package appLayer;
2
3import io.jsonwebtoken.*;
4
5import javax.crypto.spec.SecretKeySpec;
6import javax.xml.bind.DatatypeConverter;
7import java.security.Key;
8import java.util.Date;
9import java.util.Map;
10
11public class JsonWebToken {
12    private String key = "secret_key";
13    private String jwt;
14
15    public JsonWebToken(){
16    this.jwt = null;
17    }
18
19    public String CreateJsonWebToken(String id, String isuser, String subject, long ttlMillis){
20        //The JWT signature algorithm we will be using to sign the token
21        SignatureAlgorithm signatureAlgorithm = SignatureAlgorithm.HS256;
22
23        long nowMillis = System.currentTimeMillis();
24        Date now = new Date(nowMillis);
25
26        //We will sign our JWT with our ApiKey secret
27        byte[] apiKeySecretBytes = DatatypeConverter.parseBase64Binary(key);
28        Key signingKey = new SecretKeySpec(apiKeySecretBytes, signatureAlgorithm.getJcaName());
29
30        Header header = Jwts.header();
31        header.setType("JWT");
32
33        JwtBuilder builder = Jwts.builder().setHeader((Map<String, Object>)
34                header).setId(id)
35                .setIssuedAt(now)
36                .setSubject(subject)
37                .setIssuer(isuser)
38                .signWith(signatureAlgorithm, signingKey);
39
40        //if it has been specified, let's add the expiration
41        if (ttlMillis >= 0) {
42            long expMillis = nowMillis + ttlMillis;
43            Date exp = new Date(expMillis);
44            builder.setExpiration(exp);
45        }
46
47        //Builds the JWT and serializes it to a compact, URL-safe string
48        return builder.compact();
49    }
50
51    public String ParseJsonWebToken(String jwt) {
52        //This line will throw an exception if it is not a signed JWS (as expected)
53        Claims claims = Jwts.parser()
54                .setSigningKey(DatatypeConverter.parseBase64Binary(key))
55                .parseClaimsJws(jwt).getBody();
56
57        System.out.println("ID: " + claims.getId());
58        System.out.println("Subject: " + claims.getSubject());
59        System.out.println("Issuer: " + claims.getIssuer());
60        System.out.println("Expiration: " + claims.getExpiration());
61
62        String r = "ID: " + claims.getId() + "Subject: " + claims.getSubject() + "Issuer: " + claims.getIssuer() + "Expiration: " + claims.getExpiration();
63        return r;
64    }
65}