Diese Bibliothek scheint gut zu funktionieren: https://code.google.com/p/jsontoken/ .
Es hängt von Google Guava ab. Hier sind die Maven-Artefakte:
<dependency>
<groupId>com.googlecode.jsontoken</groupId>
<artifactId>jsontoken</artifactId>
<version>1.0</version>
</dependency>
<dependency>
<groupId>com.google.guava</groupId>
<artifactId>guava</artifactId>
<version>18.0</version>
</dependency>
Die Bibliothek wird tatsächlich von Google Wallet verwendet.
So erstellen Sie ein JWT, überprüfen es und deserialisieren es:
import java.security.InvalidKeyException;
import java.security.SignatureException;
import java.util.Calendar;
import java.util.List;
import net.oauth.jsontoken.JsonToken;
import net.oauth.jsontoken.JsonTokenParser;
import net.oauth.jsontoken.crypto.HmacSHA256Signer;
import net.oauth.jsontoken.crypto.HmacSHA256Verifier;
import net.oauth.jsontoken.crypto.SignatureAlgorithm;
import net.oauth.jsontoken.crypto.Verifier;
import net.oauth.jsontoken.discovery.VerifierProvider;
import net.oauth.jsontoken.discovery.VerifierProviders;
import org.apache.commons.lang3.StringUtils;
import org.bson.types.ObjectId;
import org.joda.time.DateTime;
import com.google.common.collect.Lists;
import com.google.gson.JsonObject;
public class AuthHelper {
private static final String AUDIENCE = "NotReallyImportant";
private static final String ISSUER = "YourCompanyOrAppNameHere";
private static final String SIGNING_KEY = "LongAndHardToGuessValueWithSpecialCharacters@^($%*$%";
public static String createJsonWebToken(String userId, Long durationDays) {
Calendar cal = Calendar.getInstance();
HmacSHA256Signer signer;
try {
signer = new HmacSHA256Signer(ISSUER, null, SIGNING_KEY.getBytes());
} catch (InvalidKeyException e) {
throw new RuntimeException(e);
}
JsonToken token = new net.oauth.jsontoken.JsonToken(signer);
token.setAudience(AUDIENCE);
token.setIssuedAt(new org.joda.time.Instant(cal.getTimeInMillis()));
token.setExpiration(new org.joda.time.Instant(cal.getTimeInMillis() + 1000L * 60L * 60L * 24L * durationDays));
JsonObject request = new JsonObject();
request.addProperty("userId", userId);
JsonObject payload = token.getPayloadAsJsonObject();
payload.add("info", request);
try {
return token.serializeAndSign();
} catch (SignatureException e) {
throw new RuntimeException(e);
}
}
public static TokenInfo verifyToken(String token)
{
try {
final Verifier hmacVerifier = new HmacSHA256Verifier(SIGNING_KEY.getBytes());
VerifierProvider hmacLocator = new VerifierProvider() {
@Override
public List<Verifier> findVerifier(String id, String key){
return Lists.newArrayList(hmacVerifier);
}
};
VerifierProviders locators = new VerifierProviders();
locators.setVerifierProvider(SignatureAlgorithm.HS256, hmacLocator);
net.oauth.jsontoken.Checker checker = new net.oauth.jsontoken.Checker(){
@Override
public void check(JsonObject payload) throws SignatureException {
}
};
JsonTokenParser parser = new JsonTokenParser(locators,
checker);
JsonToken jt;
try {
jt = parser.verifyAndDeserialize(token);
} catch (SignatureException e) {
throw new RuntimeException(e);
}
JsonObject payload = jt.getPayloadAsJsonObject();
TokenInfo t = new TokenInfo();
String issuer = payload.getAsJsonPrimitive("iss").getAsString();
String userIdString = payload.getAsJsonObject("info").getAsJsonPrimitive("userId").getAsString();
if (issuer.equals(ISSUER) && !StringUtils.isBlank(userIdString))
{
t.setUserId(new ObjectId(userIdString));
t.setIssued(new DateTime(payload.getAsJsonPrimitive("iat").getAsLong()));
t.setExpires(new DateTime(payload.getAsJsonPrimitive("exp").getAsLong()));
return t;
}
else
{
return null;
}
} catch (InvalidKeyException e1) {
throw new RuntimeException(e1);
}
}
}
public class TokenInfo {
private ObjectId userId;
private DateTime issued;
private DateTime expires;
public ObjectId getUserId() {
return userId;
}
public void setUserId(ObjectId userId) {
this.userId = userId;
}
public DateTime getIssued() {
return issued;
}
public void setIssued(DateTime issued) {
this.issued = issued;
}
public DateTime getExpires() {
return expires;
}
public void setExpires(DateTime expires) {
this.expires = expires;
}
}
Dies basiert auf Code hier: https://developers.google.com/wallet/instant-buy/about-jwts
Und hier: https://code.google.com/p/wallet-online-sample-java/source /browse/src/com/google/wallet/online/jwt/util/WalletOnlineService.java?r=08b3333bd7260b20846d7d96d3cf15be8a128dfa