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src/main/java/com/its/utils/SHA256Util.java

@@ -0,0 +1,58 @@
+package com.its.utils;
+
+import java.security.MessageDigest;
+import java.security.NoSuchAlgorithmException;
+import java.security.SecureRandom;
+import java.util.Base64;
+
+public class SHA256Util {
+
+    private static final String algorithm = "SHA-256";
+    private static final String saltAlgorithm = "SHA1PRNG";
+
+    public static String encrypt(String text) {
+        StringBuffer sb = new StringBuffer();
+        try {
+            MessageDigest md = MessageDigest.getInstance(algorithm);
+            md.update(text.getBytes());
+            byte[] data = md.digest();
+            for (byte b : data) {
+                sb.append(String.format("%02x", b & 0xFF));
+            }
+        } catch (NoSuchAlgorithmException e) {
+            return "";
+        }
+        return sb.toString();
+    }
+
+    public static String getSalt() {
+        String salt;
+        try {
+            SecureRandom random = SecureRandom.getInstance(saltAlgorithm);
+            byte[] bytes = new byte[16];
+            random.nextBytes(bytes);
+            salt = new String(Base64.getEncoder().encode(bytes));
+        } catch (NoSuchAlgorithmException e) {
+            return "1234567890";
+        }
+        return salt;
+    }
+
+    public static String encrypt(String text, String salt) {
+        String saltText = text + salt;
+        StringBuffer sb = new StringBuffer();
+        try {
+            MessageDigest md = MessageDigest.getInstance(algorithm);
+            md.update(saltText.getBytes());
+            byte[] data = md.digest();
+            for (byte b : data) {
+                sb.append(String.format("%02x", b & 0xFF));
+            }
+        } catch (NoSuchAlgorithmException e) {
+            return "";
+        }
+        return sb.toString();
+    }
+
+}
+