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package uk.co.blackcat; | |
import com.google.common.hash.Hashing; | |
import io.jsonwebtoken.*; | |
import io.jsonwebtoken.lang.Maps; | |
import io.jsonwebtoken.security.Keys; | |
import java.security.*; | |
import java.security.spec.InvalidKeySpecException; | |
import java.util.Map; | |
public class HttpTest { | |
public static void main(String[] args) throws Exception { | |
signJwt(); | |
} | |
private static void signJwt() throws NoSuchAlgorithmException, InvalidKeySpecException { | |
// This represents the JWK set which should be made available to clients via HTTPS | |
// https://tools.ietf.org/html/rfc7517 | |
KeyPair keyPair = Keys.keyPairFor(SignatureAlgorithm.RS256); | |
String jwkId = Hashing.sha256().hashBytes(keyPair.getPublic().getEncoded()).toString(); | |
// Create and sign our Boris | |
String jws = Jwts.builder() | |
.setHeaderParam(JwsHeader.KEY_ID, jwkId) | |
.setHeaderParam(JwsHeader.JWK_SET_URL, "The url for the JWK Set") | |
.setSubject("Boris") | |
.claim("status", "World King") | |
.signWith(keyPair.getPrivate()) | |
.compact(); | |
SigningKeyResolver signingKeyResolver = getSigningKeyResolver(jwkId, keyPair.getPublic()); | |
// verify the message signature header using the public key. | |
Jws<Claims> claimsJws = Jwts.parserBuilder() | |
.setSigningKeyResolver(signingKeyResolver) | |
.build() | |
.parseClaimsJws(jws); | |
System.out.println(claimsJws.getHeader()); | |
System.out.println(claimsJws.getBody()); | |
} | |
private static SigningKeyResolver getSigningKeyResolver(String jwkId, PublicKey publicKey) { | |
return new SigningKeyResolver() { | |
Map<String, PublicKey> jwkSet = Maps.of(jwkId, publicKey).build(); | |
@Override | |
public Key resolveSigningKey(JwsHeader jwsHeader, Claims claims) { | |
return jwkSet.get(jwsHeader.getKeyId()); | |
} | |
@Override | |
public Key resolveSigningKey(JwsHeader jwsHeader, String s) { | |
return jwkSet.get(jwsHeader.getKeyId()); | |
} | |
}; | |
} | |
} |
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