commit

2026-04-21 19:45:09 +08:00 · 2023-03-04 16:29:55 +08:00
commit 397ba75479
1007 changed files with 109050 additions and 0 deletions
--- a/jsowell-common/src/main/java/com/jsowell/common/util/AESUtil.java
+++ b/jsowell-common/src/main/java/com/jsowell/common/util/AESUtil.java
@@ -0,0 +1,176 @@
+package com.jsowell.common.util;
+
+import org.apache.commons.lang3.RandomStringUtils;
+import sun.misc.BASE64Decoder;
+
+import javax.crypto.Cipher;
+import javax.crypto.KeyGenerator;
+import javax.crypto.SecretKey;
+import javax.crypto.spec.IvParameterSpec;
+import javax.crypto.spec.SecretKeySpec;
+import java.security.NoSuchAlgorithmException;
+
+/**
+ * Copyright (c) 2019-present ShenBao
+ *
+ * @author ShenBao <shenbaoone@gmail.com>
+ * @homepage https://github.com/ShenBao/rsa-aes-utils
+ */
+public class AESUtil {
+	/**
+	 * 随机生成秘钥
+	 *
+	 * @return String
+	 */
+	public static String createAesKey() {
+		try {
+			KeyGenerator kg = KeyGenerator.getInstance("AES");
+			kg.init(128);
+			//要生成多少位，只需要修改这里即可 128, 192 或 256
+			SecretKey sk = kg.generateKey();
+			byte[] b = sk.getEncoded();
+			String k = byteToHexString(b);
+			return k;
+		} catch (NoSuchAlgorithmException e) {
+			e.printStackTrace();
+			return null;
+		}
+	}
+
+	/**
+	 * 随机生成 IV
+	 *
+	 * @return String
+	 */
+	public static String createAesIv() {
+		String iv = RandomStringUtils.randomAlphanumeric(16);
+		return iv.toLowerCase();
+	}
+
+	/**
+	 * byte 数组转化为 16 进制字符串
+	 *
+	 * @param bytes
+	 * @return String
+	 */
+	public static String byteToHexString(byte[] bytes) {
+		StringBuffer sb = new StringBuffer();
+		for (int i = 0; i < bytes.length; i++) {
+			String strHex = Integer.toHexString(bytes[i]);
+			if (strHex.length() > 3) {
+				sb.append(strHex.substring(6));
+			} else {
+				if (strHex.length() < 2) {
+					sb.append("0" + strHex);
+				} else {
+					sb.append(strHex);
+				}
+			}
+		}
+		return sb.toString();
+	}
+
+	/**
+	 * 加密 CBC
+	 *
+	 * @param data String
+	 * @param key  String
+	 * @param iv   String
+	 * @return String
+	 */
+	public static String encryptByCBC(String data, String key, String iv) throws Exception {
+		try {
+			Cipher cipher = Cipher.getInstance("AES/CBC/NoPadding");
+			int blockSize = cipher.getBlockSize();
+			byte[] dataBytes = data.getBytes();
+			int plaintextLength = dataBytes.length;
+			if (plaintextLength % blockSize != 0) {
+				plaintextLength = plaintextLength + (blockSize - (plaintextLength % blockSize));
+			}
+			byte[] plaintext = new byte[plaintextLength];
+			System.arraycopy(dataBytes, 0, plaintext, 0, dataBytes.length);
+			SecretKeySpec keyspec = new SecretKeySpec(key.getBytes(), "AES");
+			IvParameterSpec ivspec = new IvParameterSpec(iv.getBytes());
+			cipher.init(Cipher.ENCRYPT_MODE, keyspec, ivspec);
+			byte[] encrypted = cipher.doFinal(plaintext);
+			return new sun.misc.BASE64Encoder().encode(encrypted);
+		} catch (Exception e) {
+			e.printStackTrace();
+			return null;
+		}
+	}
+
+	/**
+	 * 解密 CBC
+	 *
+	 * @param data String
+	 * @param key  String
+	 * @param iv   String
+	 * @return String
+	 */
+	public static String decryptByCBC(String data, String key, String iv) throws Exception {
+		try {
+			byte[] encrypted1 = new BASE64Decoder().decodeBuffer(data);
+			Cipher cipher = Cipher.getInstance("AES/CBC/NoPadding");
+			SecretKeySpec keyspec = new SecretKeySpec(key.getBytes(), "AES");
+			IvParameterSpec ivspec = new IvParameterSpec(iv.getBytes());
+			cipher.init(Cipher.DECRYPT_MODE, keyspec, ivspec);
+			byte[] original = cipher.doFinal(encrypted1);
+			String originalString = new String(original);
+			return originalString.trim();
+		} catch (Exception e) {
+			e.printStackTrace();
+			return null;
+		}
+	}
+
+	/**
+	 * 加密 ECB
+	 *
+	 * @param data String
+	 * @param key  String
+	 * @return String
+	 */
+	public static String encryptByECB(String data, String key) throws Exception {
+		try {
+			Cipher cipher = Cipher.getInstance("AES/ECB/NoPadding");
+			int blockSize = cipher.getBlockSize();
+			byte[] dataBytes = data.getBytes();
+			int plaintextLength = dataBytes.length;
+			if (plaintextLength % blockSize != 0) {
+				plaintextLength = plaintextLength + (blockSize - (plaintextLength % blockSize));
+			}
+			byte[] plaintext = new byte[plaintextLength];
+			System.arraycopy(dataBytes, 0, plaintext, 0, dataBytes.length);
+			SecretKeySpec keyspec = new SecretKeySpec(key.getBytes(), "AES");
+			cipher.init(Cipher.ENCRYPT_MODE, keyspec);
+			byte[] encrypted = cipher.doFinal(plaintext);
+			return new sun.misc.BASE64Encoder().encode(encrypted);
+		} catch (Exception e) {
+			e.printStackTrace();
+			return null;
+		}
+	}
+
+	/**
+	 * 解密 ECB
+	 *
+	 * @param data String
+	 * @param key  String
+	 * @return String
+	 */
+	public static String decryptByECB(String data, String key) throws Exception {
+		try {
+			byte[] encrypted1 = new BASE64Decoder().decodeBuffer(data);
+			Cipher cipher = Cipher.getInstance("AES/ECB/NoPadding");
+			SecretKeySpec keyspec = new SecretKeySpec(key.getBytes(), "AES");
+			cipher.init(Cipher.DECRYPT_MODE, keyspec);
+			byte[] original = cipher.doFinal(encrypted1);
+			String originalString = new String(original);
+			return originalString.trim();
+		} catch (Exception e) {
+			e.printStackTrace();
+			return null;
+		}
+	}
+}