diff --git a/openid-connect-client/src/main/java/org/mitre/openid/connect/client/AbstractOIDCAuthenticationFilter.java b/openid-connect-client/src/main/java/org/mitre/openid/connect/client/AbstractOIDCAuthenticationFilter.java
index 839178010..09ddc2e9f 100644
--- a/openid-connect-client/src/main/java/org/mitre/openid/connect/client/AbstractOIDCAuthenticationFilter.java
+++ b/openid-connect-client/src/main/java/org/mitre/openid/connect/client/AbstractOIDCAuthenticationFilter.java
@@ -18,9 +18,7 @@ package org.mitre.openid.connect.client;
 import java.io.IOException;
 import java.io.UnsupportedEncodingException;
 import java.math.BigInteger;
-import java.security.PublicKey;
 import java.security.SecureRandom;
-import java.security.interfaces.RSAPublicKey;
 import java.text.ParseException;
 import java.util.ArrayList;
 import java.util.Arrays;
@@ -42,9 +40,7 @@ import org.apache.http.client.utils.URLEncodedUtils;
 import org.apache.http.impl.client.DefaultHttpClient;
 import org.apache.http.message.BasicNameValuePair;
 import org.mitre.jwt.signer.service.JwtSigningAndValidationService;
-import org.mitre.jwt.signer.service.impl.DefaultJwtSigningAndValidationService;
 import org.mitre.jwt.signer.service.impl.JWKSetSigningAndValidationServiceCacheService;
-import org.mitre.key.fetch.KeyFetcher;
 import org.mitre.openid.connect.config.OIDCServerConfiguration;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.http.client.HttpComponentsClientHttpRequestFactory;
@@ -59,13 +55,9 @@ import org.springframework.web.client.HttpClientErrorException;
 import org.springframework.web.client.RestTemplate;
 
 import com.google.common.base.Strings;
-import com.google.common.collect.ImmutableMap;
 import com.google.gson.JsonElement;
 import com.google.gson.JsonObject;
 import com.google.gson.JsonParser;
-import com.nimbusds.jose.JWSSigner;
-import com.nimbusds.jose.JWSVerifier;
-import com.nimbusds.jose.crypto.RSASSAVerifier;
 import com.nimbusds.jwt.ReadOnlyJWTClaimsSet;
 import com.nimbusds.jwt.SignedJWT;