org.jose4j.keys.resolvers.EmbeddedJwkVerificationKeyResolver Maven / Gradle / Ivy
package org.jose4j.keys.resolvers;
import org.jose4j.jwk.PublicJsonWebKey;
import org.jose4j.jws.JsonWebSignature;
import org.jose4j.jwx.JsonWebStructure;
import org.jose4j.lang.JoseException;
import org.jose4j.lang.UnresolvableKeyException;
import java.security.Key;
import java.util.List;
/**
* A VerificationKeyResolver implementation that uses the key in the "jwk" JWS header per
* https://tools.ietf.org/html/rfc7515#section-4.1.3
*
* This Resolver should be used only with great care and only for specific circumstances.
*
*/
public class EmbeddedJwkVerificationKeyResolver implements VerificationKeyResolver
{
private PublicJsonWebKey jwk;
@Override
public Key resolveKey(JsonWebSignature jws, List nestingContext) throws UnresolvableKeyException
{
try
{
jwk = jws.getJwkHeader();
}
catch (JoseException e)
{
throw new UnresolvableKeyException("Problem processing jwk from JWS header", e);
}
if (jwk == null)
{
throw new UnresolvableKeyException("No jwk in JWS header");
}
return jwk.getKey();
}
/**
* Gets the JWK that was found in the JWS header by this resolver.
* @return the JWK
*/
public PublicJsonWebKey getJwk()
{
return jwk;
}
}