keycloak-uncached

diff --git a/core/src/main/java/org/keycloak/jose/jwk/JWKBuilder.java b/core/src/main/java/org/keycloak/jose/jwk/JWKBuilder.java
index 8c4a9d8..9a3677d 100644
--- a/core/src/main/java/org/keycloak/jose/jwk/JWKBuilder.java
+++ b/core/src/main/java/org/keycloak/jose/jwk/JWKBuilder.java
@@ -77,21 +77,24 @@ public class JWKBuilder {
         return k;
     }
 
-
     public JWK ec(Key key) {
         ECPublicKey ecKey = (ECPublicKey) key;
 
         ECPublicJWK k = new ECPublicJWK();
 
         String kid = this.kid != null ? this.kid : KeyUtils.createKeyId(key);
+        int fieldSize = ecKey.getParams().getCurve().getField().getFieldSize();
+        BigInteger affineX = ecKey.getW().getAffineX();
+        BigInteger affineY = ecKey.getW().getAffineY();
+
         k.setKeyId(kid);
         k.setKeyType(KeyType.EC);
         k.setAlgorithm(algorithm);
         k.setPublicKeyUse(DEFAULT_PUBLIC_KEY_USE);
-        k.setCrv("P-" + ecKey.getParams().getCurve().getField().getFieldSize());
-        k.setX(Base64Url.encode(ecKey.getW().getAffineX().toByteArray()));
-        k.setY(Base64Url.encode(ecKey.getW().getAffineY().toByteArray()));
-
+        k.setCrv("P-" + fieldSize);
+        k.setX(Base64Url.encode(toIntegerBytes(ecKey.getW().getAffineX())));
+        k.setY(Base64Url.encode(toIntegerBytes(ecKey.getW().getAffineY())));
+        
         return k;
     }
 

diff --git a/core/src/test/java/org/keycloak/jose/jwk/JWKTest.java b/core/src/test/java/org/keycloak/jose/jwk/JWKTest.java
index 9db27fc..0e19bac 100644
--- a/core/src/test/java/org/keycloak/jose/jwk/JWKTest.java
+++ b/core/src/test/java/org/keycloak/jose/jwk/JWKTest.java
@@ -18,6 +18,7 @@
 package org.keycloak.jose.jwk;
 
 import org.junit.Test;
+import org.keycloak.common.util.Base64Url;
 import org.keycloak.common.util.KeyUtils;
 import org.keycloak.crypto.JavaAlgorithm;
 import org.keycloak.util.JsonSerialization;
@@ -86,9 +87,17 @@ public class JWKTest {
 
         assertTrue(jwk instanceof ECPublicJWK);
 
-        assertNotNull(((ECPublicJWK) jwk).getCrv());
-        assertNotNull(((ECPublicJWK) jwk).getX());
-        assertNotNull(((ECPublicJWK) jwk).getY());
+        ECPublicJWK ecJwk = (ECPublicJWK) jwk;
+
+        assertNotNull(ecJwk.getCrv());
+        assertNotNull(ecJwk.getX());
+        assertNotNull(ecJwk.getY());
+
+        byte[] xBytes = Base64Url.decode(ecJwk.getX());
+        byte[] yBytes = Base64Url.decode(ecJwk.getY());
+
+        assertEquals(256/8, xBytes.length);
+        assertEquals(256/8, yBytes.length);
 
         String jwkJson = JsonSerialization.writeValueAsString(jwk);