BAEL-2501 add a new section in SHA-256 article (#6271)

core-java-security/src/test/java/com/baeldung/hashing/Keccak256HashingUnitTest.java

@@ -0,0 +1,22 @@
+package com.baeldung.hashing;
+
+import org.junit.Test;
+
+import static org.junit.Assert.assertEquals;
+
+public class Keccak256HashingUnitTest {
+
+    private static String originalValue = "abc123";
+    private static String hashedValue = "719accc61a9cc126830e5906f9d672d06eab6f8597287095a2c55a8b775e7016";
+
+    @Test public void testHashWithJavaMessageDigest() throws Exception {
+        final String currentHashedValue = Keccak256Hashing.hashWithJavaMessageDigest(originalValue);
+        assertEquals(hashedValue, currentHashedValue);
+    }
+
+    @Test public void testHashWithBouncyCastle() {
+        final String currentHashedValue = Keccak256Hashing.hashWithBouncyCastle(originalValue);
+        assertEquals(hashedValue, currentHashedValue);
+    }
+
+}

core-java-security/src/test/java/com/baeldung/hashing/SHA256HashingUnitTest.java

@@ -12,24 +12,24 @@ public class SHA256HashingUnitTest {
     @Test
     public void testHashWithJavaMessageDigest() throws Exception {
         final String currentHashedValue = SHA256Hashing.HashWithJavaMessageDigest(originalValue);
-        assertEquals(currentHashedValue, hashedValue);
+        assertEquals(hashedValue, currentHashedValue);
     }
 
     @Test
     public void testHashWithGuava() throws Exception {
-        final String currentHashedValue = SHA256Hashing.HashWithApacheCommons(originalValue);
-        assertEquals(currentHashedValue, hashedValue);
+        final String currentHashedValue = SHA256Hashing.hashWithGuava(originalValue);
+        assertEquals(hashedValue, currentHashedValue);
     }
 
     @Test
     public void testHashWithApacheCommans() throws Exception {
-        final String currentHashedValue = SHA256Hashing.HashWithGuava(originalValue);
-        assertEquals(currentHashedValue, hashedValue);
+        final String currentHashedValue = SHA256Hashing.HashWithApacheCommons(originalValue);
+        assertEquals(hashedValue, currentHashedValue);
     }
 
     @Test
     public void testHashWithBouncyCastle() throws Exception {
         final String currentHashedValue = SHA256Hashing.HashWithBouncyCastle(originalValue);
-        assertEquals(currentHashedValue, hashedValue);
+        assertEquals(hashedValue, currentHashedValue);
     }
 }

core-java-security/src/test/java/com/baeldung/hashing/SHA3HashingUnitTest.java

@@ -0,0 +1,38 @@
+package com.baeldung.hashing;
+
+import org.junit.Test;
+
+import static org.junit.Assert.assertEquals;
+
+public class SHA3HashingUnitTest {
+
+    private static String originalValue = "abc123";
+    private static String hashedValue = "f58fa3df820114f56e1544354379820cff464c9c41cb3ca0ad0b0843c9bb67ee";
+
+    /* works with JDK9+ only */
+    //@Test
+    public void testHashWithJavaMessageDigestJDK9() throws Exception {
+        final String currentHashedValue = SHA3Hashing.hashWithJavaMessageDigestJDK9(originalValue);
+        assertEquals(hashedValue, currentHashedValue);
+    }
+
+    @Test
+    public void testHashWithJavaMessageDigest() throws Exception {
+        final String currentHashedValue = SHA3Hashing.hashWithJavaMessageDigest(originalValue);
+        assertEquals(hashedValue, currentHashedValue);
+    }
+
+    /* works with JDK9+ only */
+    //@Test
+    public void testHashWithApacheCommonsJDK9() {
+        final String currentHashedValue = SHA3Hashing.hashWithApacheCommonsJDK9(originalValue);
+        assertEquals(hashedValue, currentHashedValue);
+    }
+
+    @Test
+    public void testHashWithBouncyCastle() {
+        final String currentHashedValue = SHA3Hashing.hashWithBouncyCastle(originalValue);
+        assertEquals(hashedValue, currentHashedValue);
+    }
+
+}