diff a/test/jdk/sun/security/ec/SignatureDigestTruncate.java b/test/jdk/sun/security/ec/SignatureDigestTruncate.java
--- a/test/jdk/sun/security/ec/SignatureDigestTruncate.java
+++ b/test/jdk/sun/security/ec/SignatureDigestTruncate.java
@@ -19,12 +19,10 @@
  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  * or visit www.oracle.com if you need additional information or have any
  * questions.
  */
 
-import jdk.test.lib.Convert;
-
 import java.security.*;
 import java.security.spec.*;
 import java.math.*;
 import java.util.*;
 
@@ -77,28 +75,27 @@
     }
 
     private static void assertEquals(byte[] expected, byte[] actual,
             String name) {
         if (!Arrays.equals(actual, expected)) {
-            System.out.println("expect: "
-                    + Convert.byteArrayToHexString(expected));
-            System.out.println("actual: "
-                    + Convert.byteArrayToHexString(actual));
+            System.out.println("expect: " + Hex.encoder().encode(expected));
+            System.out.println("actual: " + Hex.encoder().encode(actual));
             throw new RuntimeException("Incorrect " + name + " value");
         }
     }
 
     private static void runTest(String alg, String curveName,
         String privateKeyStr, String msgStr, String kStr, String sigStr)
         throws Exception {
 
         System.out.println("Testing " + alg + " with " + curveName);
 
-        byte[] privateKey = Convert.hexStringToByteArray(privateKeyStr);
-        byte[] msg = Convert.hexStringToByteArray(msgStr);
-        byte[] k = Convert.hexStringToByteArray(kStr);
-        byte[] expectedSig = Convert.hexStringToByteArray(sigStr);
+        Hex.Decoder decoder = Hex.decoder();
+        byte[] privateKey = decoder.decode(privateKeyStr);
+        byte[] msg = decoder.decode(msgStr);
+        byte[] k = decoder.decode(kStr);
+        byte[] expectedSig = decoder.decode(sigStr);
 
         AlgorithmParameters params =
             AlgorithmParameters.getInstance("EC", "SunEC");
         params.init(new ECGenParameterSpec(curveName));
         ECParameterSpec ecParams =