【feat】git忽略目录_v1

src/main/java/com/celnet/datadump/util/AESUtil.java

@@ -0,0 +1,109 @@
+package com.celnet.datadump.util;
+
+import lombok.extern.slf4j.Slf4j;
+
+import javax.crypto.Cipher;
+import javax.crypto.KeyGenerator;
+import javax.crypto.SecretKey;
+import javax.crypto.spec.SecretKeySpec;
+import java.nio.charset.StandardCharsets;
+import java.security.Key;
+import java.security.NoSuchAlgorithmException;
+import java.security.SecureRandom;
+import java.util.Base64;
+
+@Slf4j
+public class AESUtil {
+
+    private static String DEFAULT_CIPHER_ALGORITHM = "SHA1PRNG";
+    private static String KEY_ALGORITHM = "AES";
+
+    /**
+     * 加密
+     *
+     * @param key
+     * @param messBytes
+     * @return
+     */
+    private static byte[] encrypt(Key key, byte[] messBytes) throws Exception {
+        if (key != null) {
+
+            Cipher cipher = Cipher.getInstance(KEY_ALGORITHM);
+            cipher.init(Cipher.ENCRYPT_MODE, key);
+            return cipher.doFinal(messBytes);
+        }
+        return null;
+    }
+
+    /**
+     * AES（256）解密
+     *
+     * @param key
+     * @param cipherBytes
+     * @return
+     */
+    private static byte[] decrypt(Key key, byte[] cipherBytes) throws Exception {
+        if (key != null) {
+
+            Cipher cipher = Cipher.getInstance(KEY_ALGORITHM);
+            cipher.init(Cipher.DECRYPT_MODE, key);
+            return cipher.doFinal(cipherBytes);
+        }
+        return null;
+    }
+
+
+    /**
+     * 生成加密秘钥
+     *
+     * @return
+     * @throws NoSuchAlgorithmException
+     */
+    private static KeyGenerator getKeyGenerator() {
+
+        String key = "WEQWESDASDSSXCWA";
+
+        KeyGenerator keygen = null;
+        try {
+            keygen = KeyGenerator.getInstance(KEY_ALGORITHM);
+            SecureRandom secureRandom = SecureRandom.getInstance(DEFAULT_CIPHER_ALGORITHM);
+            secureRandom.setSeed(key.getBytes());
+            keygen.init(128, secureRandom);
+        } catch (NoSuchAlgorithmException e) {
+            log.warn("Get key generator error {}", e.getMessage());
+        }
+
+        return keygen;
+    }
+
+    public static String encrypt(String message) {
+        try {
+            KeyGenerator keygen = getKeyGenerator();
+            SecretKey secretKey = new SecretKeySpec(keygen.generateKey().getEncoded(), KEY_ALGORITHM);
+            return Base64.getEncoder().encodeToString(encrypt(secretKey, message.getBytes(StandardCharsets.UTF_8)));
+        } catch (Exception e) {
+            log.warn("content encrypt error {}", e.getMessage());
+        }
+        return null;
+    }
+
+    public static String decrypt(String ciphertext) {
+        try {
+            KeyGenerator keygen = getKeyGenerator();
+            SecretKey secretKey = new SecretKeySpec(keygen.generateKey().getEncoded(), KEY_ALGORITHM);
+            return new String(decrypt(secretKey, Base64.getDecoder().decode(ciphertext)), StandardCharsets.UTF_8);
+        } catch (Exception e) {
+            log.warn("content decrypt error {}", e.getMessage());
+        }
+        return null;
+    }
+
+    public static void main(String[] args) {
+        String message = "root";
+        String ciphertext = encrypt(message);
+
+        System.out.println("加密后密文为: " + ciphertext);
+        System.out.println("解密后明文为:" + decrypt(ciphertext));
+    }
+
+}