--- a/src/java.security.jgss/share/classes/sun/security/krb5/internal/crypto/RsaMd5CksumType.java	Tue Jul 02 18:24:47 2019 -0400
+++ b/src/java.security.jgss/share/classes/sun/security/krb5/internal/crypto/RsaMd5CksumType.java	Wed Jul 03 11:43:01 2019 +0800
@@ -101,4 +101,14 @@
         return false;
     }
 
+    @Override
+    public boolean verifyChecksum(byte[] data, byte[] checksum)
+            throws KrbCryptoException {
+        try {
+            byte[] calculated = MessageDigest.getInstance("MD5").digest(data);
+            return CksumType.isChecksumEqual(calculated, checksum);
+        } catch (Exception e) {
+            return false;
+        }
+    }
 }