From 72a108f960896c282bf1e4dd4dedb6bbfc3c29f5 Mon Sep 17 00:00:00 2001
From: Philippus Baalman <philippus@gmail.com>
Date: Fri, 23 Aug 2019 00:23:46 +0200
Subject: [PATCH 1/3] Drop last 4 bytes of computed SHA-1 hash

---
 .../src/main/java/com/baeldung/uuid/UUIDGenerator.java          | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/core-java-modules/core-java/src/main/java/com/baeldung/uuid/UUIDGenerator.java b/core-java-modules/core-java/src/main/java/com/baeldung/uuid/UUIDGenerator.java
index dcf186de93..70217cd556 100644
--- a/core-java-modules/core-java/src/main/java/com/baeldung/uuid/UUIDGenerator.java
+++ b/core-java-modules/core-java/src/main/java/com/baeldung/uuid/UUIDGenerator.java
@@ -67,7 +67,7 @@ public class UUIDGenerator {
         } catch (NoSuchAlgorithmException nsae) {
             throw new InternalError("MD5 not supported", nsae);
         }
-        byte[] bytes = md.digest(name);
+        byte[] bytes = Arrays.copyOfRange(md.digest(name), 0, 16);
         bytes[6] &= 0x0f; /* clear version        */
         bytes[6] |= 0x50; /* set to version 5     */
         bytes[8] &= 0x3f; /* clear variant        */

From ad54ac6f5e569654f72d29d961bf6f3a16edfb1d Mon Sep 17 00:00:00 2001
From: Philippus Baalman <philippus@gmail.com>
Date: Fri, 23 Aug 2019 00:29:27 +0200
Subject: [PATCH 2/3] Fix message for exception

---
 .../src/main/java/com/baeldung/uuid/UUIDGenerator.java          | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/core-java-modules/core-java/src/main/java/com/baeldung/uuid/UUIDGenerator.java b/core-java-modules/core-java/src/main/java/com/baeldung/uuid/UUIDGenerator.java
index 70217cd556..c4663a429c 100644
--- a/core-java-modules/core-java/src/main/java/com/baeldung/uuid/UUIDGenerator.java
+++ b/core-java-modules/core-java/src/main/java/com/baeldung/uuid/UUIDGenerator.java
@@ -65,7 +65,7 @@ public class UUIDGenerator {
         try {
             md = MessageDigest.getInstance("SHA-1");
         } catch (NoSuchAlgorithmException nsae) {
-            throw new InternalError("MD5 not supported", nsae);
+            throw new InternalError("SHA-1 not supported", nsae);
         }
         byte[] bytes = Arrays.copyOfRange(md.digest(name), 0, 16);
         bytes[6] &= 0x0f; /* clear version        */

From 2747b3b5e49e1e55e782481ada4ecec9aaddcc42 Mon Sep 17 00:00:00 2001
From: Eric Martin <emart_tigers@yahoo.com>
Date: Thu, 5 Sep 2019 14:45:00 -0500
Subject: [PATCH 3/3] import java.util.Arrays;

---
 .../core-java/src/main/java/com/baeldung/uuid/UUIDGenerator.java | 1 +
 1 file changed, 1 insertion(+)

diff --git a/core-java-modules/core-java/src/main/java/com/baeldung/uuid/UUIDGenerator.java b/core-java-modules/core-java/src/main/java/com/baeldung/uuid/UUIDGenerator.java
index c4663a429c..2659b29491 100644
--- a/core-java-modules/core-java/src/main/java/com/baeldung/uuid/UUIDGenerator.java
+++ b/core-java-modules/core-java/src/main/java/com/baeldung/uuid/UUIDGenerator.java
@@ -3,6 +3,7 @@ package com.baeldung.uuid;
 import java.io.UnsupportedEncodingException;
 import java.security.MessageDigest;
 import java.security.NoSuchAlgorithmException;
+import java.util.Arrays;
 import java.util.UUID;
 
 public class UUIDGenerator {