AES 128 加密
// 加密 AES 128 ECB PKCS7 public static String AES128_Encrypt(String sSrc, String sKey) throws Exception { if (sKey == null) { System.out.print("Key为空null"); return null; } // 判断Key是否为16位 // if (sKey.length() != 16) { // System.out.print("Key长度不是16位"); // return null; // } byte[] raw = sKey.getBytes("utf-8"); SecretKeySpec skeySpec = new SecretKeySpec(raw, "AES"); Cipher cipher = Cipher.getInstance("AES/ECB/PKCS7Padding");//"算法/模式/补码方式" cipher.init(Cipher.ENCRYPT_MODE, skeySpec); byte[] encrypted = cipher.doFinal(sSrc.getBytes("utf-8")); return new String(Base64.encode(encrypted, Base64.NO_WRAP),"utf-8"); // return new Base64().encodeToString(encrypted);//此处使用BASE64做转码功能,同时能起到2次加密的作用。 } // 解密 public static String AES128_Decrypt(String sSrc, String sKey) throws Exception { try { // 判断Key是否正确 if (sKey == null) { System.out.print("Key为空null"); return null; } // 判断Key是否为16位 // if (sKey.length() != 16) { // System.out.print("Key长度不是16位"); // return null; // } byte[] raw = sKey.getBytes("utf-8"); SecretKeySpec skeySpec = new SecretKeySpec(raw, "AES"); Cipher cipher = Cipher.getInstance("AES/ECB/PKCS5Padding"); cipher.init(Cipher.DECRYPT_MODE, skeySpec); // byte[] encrypted1 = new Base64().decode(sSrc);//先用base64解密 byte[] encrypted1 = Base64.decode(sSrc, Base64.NO_WRAP); try { byte[] original = cipher.doFinal(encrypted1); String originalString = new String(original,"utf-8"); return originalString; } catch (Exception e) { System.out.println(e.toString()); return null; } } catch (Exception ex) { System.out.println(ex.toString()); return null; } }
MD5加密
public static String MD5Encrypt(String plaintext) { char hexDigits[] = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f' }; try { byte[] btInput = plaintext.getBytes(); // 获得MD5摘要算法的 MessageDigest 对象 MessageDigest mdInst = MessageDigest.getInstance("MD5"); // 使用指定的字节更新摘要 mdInst.update(btInput); // 获得密文 byte[] md = mdInst.digest(); // 把密文转换成十六进制的字符串形式 int j = md.length; char str[] = new char[j * 2]; int k = 0; for (int i = 0; i < j; i++) { byte byte0 = md[i]; str[k++] = hexDigits[byte0 >>> 4 & 0xf]; str[k++] = hexDigits[byte0 & 0xf]; } return new String(str); } catch (Exception e) { return null; } }
Base64 加密
// 加密
String str = new String(Base64.encode("需要加密的字符串", Base64.DEFAULT));
// 解密
String str = new String(Base64.decode("需要解密的字符串", Base64.DEFAULT));