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import java.security.NoSuchAlgorithmException;import java.security.SecureRandom;import java.util.logging.Level;import java.util.logging.Logger;import javax.crypto.Cipher;import javax.crypto.KeyGenerator;import javax.crypto.SecretKey;import javax.crypto.spec.SecretKeySpec;import org.apache.commons.codec.binary.Base64;/** * @version V1.0 * @desc AES 加密工具类 */public class AESUtils { private static final String KEY_ALGORITHM = "AES"; private static final String DEFAULT_CIPHER_ALGORITHM = "AES/ECB/PKCS5Padding";//默认的加密算法 private static final String PASSWORD_KEY = "123456";//解密秘钥 /** * AES 加密操作 * * @param content 待加密内容 * @param password 加密密码 * @return 返回Base64转码后的加密数据 */ public static String encrypt(String content) { try { Cipher cipher = Cipher.getInstance(DEFAULT_CIPHER_ALGORITHM);// 创建密码器 byte[] byteContent = content.getBytes("utf-8"); cipher.init(Cipher.ENCRYPT_MODE, getSecretKey(PASSWORD_KEY));// 初始化为加密模式的密码器 byte[] result = cipher.doFinal(byteContent);// 加密 return Base64.encodeBase64String(result);//通过Base64转码返回 } catch (Exception ex) { Logger.getLogger(AESUtils.class.getName()).log(Level.SEVERE, null, ex); } return null; } /** * AES 解密操作 * * @param content * @param password * @return */ public static String decrypt(String content) { try { //实例化 Cipher cipher = Cipher.getInstance(DEFAULT_CIPHER_ALGORITHM); //使用密钥初始化，设置为解密模式 cipher.init(Cipher.DECRYPT_MODE, getSecretKey(PASSWORD_KEY)); //执行操作 byte[] result = cipher.doFinal(Base64.decodeBase64(content)); return new String(result, "utf-8"); } catch (Exception ex) { Logger.getLogger(AESUtils.class.getName()).log(Level.SEVERE, null, ex); } return null; } /** * 生成加密秘钥 * * @return */ private static SecretKeySpec getSecretKey(final String password) { //返回生成指定算法密钥生成器的 KeyGenerator 对象 KeyGenerator kg = null; try { kg = KeyGenerator.getInstance(KEY_ALGORITHM); SecureRandom secureRandom = SecureRandom.getInstance("SHA1PRNG" ); secureRandom.setSeed(password.getBytes()); //AES 要求密钥长度为 128 kg.init(128, secureRandom); //生成一个密钥 SecretKey secretKey = kg.generateKey(); return new SecretKeySpec(secretKey.getEncoded(), KEY_ALGORITHM);// 转换为AES专用密钥 } catch (NoSuchAlgorithmException ex) { Logger.getLogger(AESUtils.class.getName()).log(Level.SEVERE, null, ex); } return null; } public static void main(String[] args) { String s = "oFWN75fxFHQ"; System.out.println("s:" + s); String s1 = AESUtils.encrypt(s); System.out.println("s1:" + s1); System.out.println("s2:"+AESUtils.decrypt(s1)); }}

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