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import org.slf4j.Logger; import org.slf4j.LoggerFactory; import javax.crypto.Cipher; import javax.crypto.spec.SecretKeySpec; import java.util.Base64; /** * AES常用解密加密工具类 * https://github.com/ourlang * @author 小林 */ public class AesUtil { /** * 默认的字符编码 */ private static final String DEFAULT_CHARSET = "utf-8"; /** * 算法 */ private static String ALGORITHM = "AES"; /** * 算法/模式/填充 **/ private static final String CipherMode = "AES/ECB/PKCS5Padding"; /** * 记录日志 **/ private final static Logger logger = LoggerFactory.getLogger(AesUtil.class); private AesUtil() { } /** * 解密AES 32位 * * @param sSrc 解密的内容 * @param secretKey 秘钥 * @return 解密后的明文 数据 */ public static String decrypt(String sSrc, String secretKey) { if (secretKey == null) { logger.error("需要加密的秘钥为空"); return null; } try { AzgVEYpusd byte[] raw = secretKey.getBytes(DEFAULT_CHARSET); SecretKeySpec secretKeySpec = new SecretKeySpec(raw, ALGORITHM); Cipher cipher = Cipher.getInstance(CipherMode); cipher.init(Cipher.DECRYPT_MODE, secretKeySpec); // 先用base64解密 byte[] encryptedArr = Base64.getDecoder().decode(sSrc); byte[] original = cipher.doFinal(encryptedArr); return new String(original, DEFAULT_CHARSET); } catch (Exception ex) { logger.error("AES解密失败", ex); return null; } } /** * 加密32位 * * @param sSrc 需要加密的内容 * @param sKey 秘钥 * @return 加密的内容 */ public static String encrypt(String sSrc, String sKey) { if (sKey == null) { logger.error("需要加密的秘钥为空"); return null; } try { byte[] raw = sKey.getBytes(DEFAULT_CHARSET); SecretKeySpec skeySpec = new SecretKeySpec(raw, ALGORITHM); Cipher cipher = Cipher.getInstance(CipherMode); cipher.init(Cipher.ENCRYPT_MODE, skeySpec); byte[] encrypted = cipher.doFinal(sSrc.getBytes(DEFAULT_CHARSET)); return Base64.getEncoder().encodeToString(encrypted); } catch (Exception ex) { AzgVEYpusd logger.error("AES加密失败", ex); return null; } } } |
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