reference to : http://blog.csdn.net/wfung_kwok/article/details/7766029
加密和解密要用同一個key
AES：
import java.util.UUID; import javax.crypto.Cipher; import javax.crypto.spec.IvParameterSpec; import javax.crypto.spec.SecretKeySpec; public class DES { private static final byte[] iv = { 1, 2, 3, 4, 5, 6, 7, 8 }; /** * * @param encryptString 加密内容 * @param encryptKey 加密key * @return * @throws Exception */ public static String encryptDES(String encryptString, String encryptKey) throws Exception { IvParameterSpec zeroIv = new IvParameterSpec(iv); SecretKeySpec key = new SecretKeySpec(encryptKey.getBytes(), "DES"); Cipher cipher = Cipher.getInstance("DES/CBC/PKCS5Padding"); cipher.init(Cipher.ENCRYPT_MODE, key, zeroIv); String tmp = Base64.encodeBytes(encryptString.getBytes("UTF-8")); byte[] encryptedData = cipher.doFinal(tmp.getBytes("UTF-8")); return Base64.encodeBytes(encryptedData); } /** * * @param decryptString 解密内容 * @param encryptKey 解密key * @return * @throws Exception */ public static String decryptDES(String decryptString,String encryptKey)throws Exception { IvParameterSpec zeroIv = new IvParameterSpec(iv); SecretKeySpec key = new SecretKeySpec(encryptKey.getBytes(), "DES"); Cipher cipher = Cipher.getInstance("DES/CBC/PKCS5Padding"); cipher.init(Cipher.DECRYPT_MODE, key, zeroIv); byte[] decryptBytes = cipher.doFinal(Base64.decode(decryptString)); String tmp = new String(decryptBytes,"UTF-8"); return new String(Base64.decode(tmp)); } public static String getKey(){ String p = UUID.randomUUID().toString(); return SHA1.Encrypt(p).substring(0, 8); } }
Test：
public static void testDES() throws Exception{ String content = "AES加密"; String key = DES.getKey(); String a = DES.encryptDES(content, key); System.out.println("DES Encrypt..." + a); String b = DES.decryptDES(a, key); System.out.println("DES decrypt..." + b); }
Console：
DES Encrypt...93koM7boCXsNrH91Y0MDJA==
DES decrypt...AES加密
