Didn't find publicKey for kid ,Keycloak?

Question

I am getting this exception "Didn't find publicKey for kid" while calling endpoint from angular js 2 to the widlfly server .

authentication happened in keycloak , however i am calling about 8 endpoints from different clients (different micro services ) within same realm using same token but i got this exception only for this microservice call .

i am sure that the user has all roles for all clients . i also decoded the token on JWT to verify that.

sometimes it works and sometimes no!! this the exception stack trace :

Caused by: java.lang.RuntimeException: Unexpected error: java.security.InvalidAlgorithmParameterException: the trustAnchors parameter must be non-empty
    at sun.security.validator.PKIXValidator.<init>(PKIXValidator.java:90)
    at sun.security.validator.Validator.getInstance(Validator.java:179)
    at sun.security.ssl.X509TrustManagerImpl.getValidator(X509TrustManagerImpl.java:312)
    at sun.security.ssl.X509TrustManagerImpl.checkTrustedInit(X509TrustManagerImpl.java:171)
    at sun.security.ssl.X509TrustManagerImpl.checkTrusted(X509TrustManagerImpl.java:184)
    at sun.security.ssl.X509TrustManagerImpl.checkServerTrusted(X509TrustManagerImpl.java:124)
    at sun.security.ssl.ClientHandshaker.serverCertificate(ClientHandshaker.java:1491)
    at sun.security.ssl.ClientHandshaker.processMessage(ClientHandshaker.java:216)
    at sun.security.ssl.Handshaker.processLoop(Handshaker.java:979)
    at sun.security.ssl.Handshaker.process_record(Handshaker.java:914)
    at sun.security.ssl.SSLSocketImpl.readRecord(SSLSocketImpl.java:1062)
    at sun.security.ssl.SSLSocketImpl.performInitialHandshake(SSLSocketImpl.java:1375)
    at sun.security.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:1403)
    ... 55 more
Caused by: java.security.InvalidAlgorithmParameterException: the trustAnchors parameter must be non-empty
    at java.security.cert.PKIXParameters.setTrustAnchors(PKIXParameters.java:200)
    at java.security.cert.PKIXParameters.<init>(PKIXParameters.java:120)
    at java.security.cert.PKIXBuilderParameters.<init>(PKIXBuilderParameters.java:104)
    at sun.security.validator.PKIXValidator.<init>(PKIXValidator.java:88)
    ... 67 more

2017-06-09 00:33:35,994 ERROR [org.keycloak.adapters.rotation.AdapterRSATokenVerifier] (default task-445) Didn't find publicKey for kid: QSm64gYAxG5-5Lt5r-T2dqQmHb8KKJ2dL3h_3Y8zXBE
2017-06-09 00:33:35,994 ERROR [org.keycloak.adapters.BearerTokenRequestAuthenticator] (default task-445) Failed to verify token: org.keycloak.common.VerificationException: Didn't find publicKey for specified kid
    at org.keycloak.adapters.rotation.AdapterRSATokenVerifier.getPublicKey(AdapterRSATokenVerifier.java:47)
    at org.keycloak.adapters.rotation.AdapterRSATokenVerifier.verifyToken(AdapterRSATokenVerifier.java:55)
    at org.keycloak.adapters.rotation.AdapterRSATokenVerifier.verifyToken(AdapterRSATokenVerifier.java:37)
    at org.keycloak.adapters.BearerTokenRequestAuthenticator.authenticateToken(BearerTokenRequestAuthenticator.java:87)
    at org.keycloak.adapters.BearerTokenRequestAuthenticator.authenticate(BearerTokenRequestAuthenticator.java:82)
    at org.keycloak.adapters.RequestAuthenticator.authenticate(RequestAuthenticator.java:67)
    at org.keycloak.adapters.undertow.AbstractUndertowKeycloakAuthMech.keycloakAuthenticate(AbstractUndertowKeycloakAuthMech.java:110)
    at org.keycloak.adapters.undertow.ServletKeycloakAuthMech.authenticate(ServletKeycloakAuthMech.java:92)
    at io.undertow.security.impl.SecurityContextImpl$AuthAttempter.transition(SecurityContextImpl.java:233)
    at io.undertow.security.impl.SecurityContextImpl$AuthAttempter.transition(SecurityContextImpl.java:250)
    at io.undertow.security.impl.SecurityContextImpl$AuthAttempter.access$100(SecurityContextImpl.java:219)
    at io.undertow.security.impl.SecurityContextImpl.attemptAuthentication(SecurityContextImpl.java:121)
    at io.undertow.security.impl.SecurityContextImpl.authTransition(SecurityContextImpl.java:96)
    at io.undertow.security.impl.SecurityContextImpl.authenticate(SecurityContextImpl.java:89)
    at io.undertow.servlet.handlers.security.ServletAuthenticationCallHandler.handleRequest(ServletAuthenticationCallHandler.java:55)
    at io.undertow.server.handlers.DisableCacheHandler.handleRequest(DisableCacheHandler.java:33)
    at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
    at io.undertow.security.handlers.AuthenticationConstraintHandler.handleRequest(AuthenticationConstraintHandler.java:51)
    at io.undertow.security.handlers.AbstractConfidentialityHandler.handleRequest(AbstractConfidentialityHandler.java:46)
    at io.undertow.servlet.handlers.security.ServletConfidentialityConstraintHandler.handleRequest(ServletConfidentialityConstraintHandler.java:64)
    at io.undertow.servlet.handlers.security.ServletSecurityConstraintHandler.handleRequest(ServletSecurityConstraintHandler.java:56)
    at io.undertow.security.handlers.AuthenticationMechanismsHandler.handleRequest(AuthenticationMechanismsHandler.java:60)
    at io.undertow.servlet.handlers.security.CachedAuthenticatedSessionHandler.handleRequest(CachedAuthenticatedSessionHandler.java:77)
    at io.undertow.security.handlers.NotificationReceiverHandler.handleRequest(NotificationReceiverHandler.java:50)
    at io.undertow.security.handlers.AbstractSecurityContextAssociationHandler.handleRequest(AbstractSecurityContextAssociationHandler.java:43)
    at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
    at org.wildfly.extension.undertow.security.jacc.JACCContextIdHandler.handleRequest(JACCContextIdHandler.java:61)
    at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
    at org.keycloak.adapters.undertow.ServletPreAuthActionsHandler.handleRequest(ServletPreAuthActionsHandler.java:69)
    at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
    at io.undertow.servlet.handlers.ServletInitialHandler.handleFirstRequest(ServletInitialHandler.java:284)
    at io.undertow.servlet.handlers.ServletInitialHandler.dispatchRequest(ServletInitialHandler.java:263)
    at io.undertow.servlet.handlers.ServletInitialHandler.access$000(ServletInitialHandler.java:81)
    at io.undertow.servlet.handlers.ServletInitialHandler$1.handleRequest(ServletInitialHandler.java:174)
    at io.undertow.server.Connectors.executeRootHandler(Connectors.java:202)
    at io.undertow.server.HttpServerExchange$1.run(HttpServerExchange.java:793)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
    at java.lang.Thread.run(Thread.java:745)

Answer 1

If this is still relevant, I had the same problem. In my case the problem was that in Keycloak the client name was not configured correctly. After correcting the client name within Keycloak everything works great.