Doing a better bytes comparison in some of JAXRS OAuth2/Jose code

Author: sberyozkin

rt/rs/security/jose-parent/jose/src/main/java/org/apache/cxf/rs/security/jose/jwe/AesCbcHmacJweDecryption.java

@@ -18,8 +18,8 @@
  */
 package org.apache.cxf.rs.security.jose.jwe;
 
+import java.security.MessageDigest;
 import java.security.spec.AlgorithmParameterSpec;
-import java.util.Arrays;
 
 import javax.crypto.spec.IvParameterSpec;
 
@@ -56,7 +56,7 @@ protected void validateAuthenticationTag(JweDecryptionInput jweDecryptionInput,
                                                            jweDecryptionInput.getDecodedJsonHeaders());
         macState.mac.update(jweDecryptionInput.getEncryptedContent());
         byte[] expectedAuthTag = AesCbcHmacJweEncryption.signAndGetTag(macState);
-        if (!Arrays.equals(actualAuthTag, expectedAuthTag)) {
+        if (!MessageDigest.isEqual(actualAuthTag, expectedAuthTag)) {
             LOG.warning("Invalid authentication tag");
             throw new JweException(JweException.Error.CONTENT_DECRYPTION_FAILURE);
         }

rt/rs/security/jose-parent/jose/src/main/java/org/apache/cxf/rs/security/jose/jws/HmacJwsSignatureVerifier.java

@@ -18,8 +18,8 @@
  */
 package org.apache.cxf.rs.security.jose.jws;
 
+import java.security.MessageDigest;
 import java.security.spec.AlgorithmParameterSpec;
-import java.util.Arrays;
 import java.util.logging.Logger;
 
 import org.apache.cxf.common.logging.LogUtils;
@@ -53,7 +53,7 @@ public HmacJwsSignatureVerifier(byte[] key, AlgorithmParameterSpec spec, Signatu
     @Override
     public boolean verify(JwsHeaders headers, String unsignedText, byte[] signature) {
         byte[] expected = computeMac(headers, unsignedText);
-        return Arrays.equals(expected, signature);
+        return MessageDigest.isEqual(expected, signature);
     }
 
     private byte[] computeMac(JwsHeaders headers, String text) {

rt/rs/security/oauth-parent/oauth2/src/main/java/org/apache/cxf/rs/security/oauth2/tokens/hawk/AbstractHawkAccessTokenValidator.java

@@ -19,7 +19,7 @@
 package org.apache.cxf.rs.security.oauth2.tokens.hawk;
 
 import java.net.URI;
-import java.util.Arrays;
+import java.security.MessageDigest;
 import java.util.Collections;
 import java.util.HashMap;
 import java.util.List;
@@ -78,7 +78,7 @@ public AccessTokenValidation validateAccessToken(MessageContext mc,
 
             String clientMacString = schemeParams.get(OAuthConstants.HAWK_TOKEN_SIGNATURE);
             byte[] clientMacData = Base64Utility.decode(clientMacString);
-            boolean validMac = Arrays.equals(serverMacData, clientMacData);
+            boolean validMac = MessageDigest.isEqual(serverMacData, clientMacData);
             if (!validMac) {
                 AuthorizationUtils.throwAuthorizationFailure(Collections
                     .singleton(OAuthConstants.HAWK_AUTHORIZATION_SCHEME));