| | |
| | | import javax.crypto.spec.SecretKeySpec; |
| | | import java.util.Base64; |
| | | |
| | | /** |
| | | * AES加密帮助 |
| | | * @author WWW |
| | | */ |
| | | @SuppressWarnings("restriction") |
| | | @SuppressWarnings("ALL") |
| | | public class AesHelper { |
| | | /** |
| | | * 密钥长度必须是16 |
| | | */ |
| | | private static final String DEFAULT_KEY = "A#s_lF_sErve_k.y"; |
| | | |
| | | private static final String KEY_ALGORITHM = "AES"; |
| | | |
| | | /** |
| | | * 算法 |
| | | */ |
| | | private static final String ALGORITHMSTR = "AES/ECB/PKCS5Padding"; |
| | | |
| | | /** |
| | | * aes解密 |
| | | * |
| | | * @param encrypt 内容 |
| | | * @return |
| | | * @throws Exception |
| | | */ |
| | | public static String decrypt(String encrypt) throws Exception { |
| | | return decrypt(encrypt, DEFAULT_KEY); |
| | | } |
| | | |
| | | /** |
| | | * aes加密 |
| | | * |
| | | * @param content 内容 |
| | | * @return |
| | | * @throws Exception |
| | | */ |
| | | public static String encrypt(String content) throws Exception { |
| | | return encrypt(content, DEFAULT_KEY); |
| | | } |
| | | |
| | | /** |
| | | * base 64 encode |
| | | * |
| | | * @param bytes 待编码的byte[] |
| | | * @return 编码后的base64 code |
| | | */ |
| | | private static String base64Encode(byte[] bytes) { |
| | | return Base64.getEncoder().encodeToString(bytes); |
| | | } |
| | | |
| | | /** |
| | | * base 64 decode |
| | | * |
| | | * @param base64Code 待解码的base64 code |
| | | * @return 解码后的byte[] |
| | | * @throws Exception |
| | | */ |
| | | private static byte[] base64Decode(String base64Code) { |
| | | return StringHelper.isEmpty(base64Code) ? null : Base64.getDecoder().decode(base64Code); |
| | | } |
| | | |
| | | /** |
| | | * AES加密 |
| | | * |
| | | * @param content 待加密的内容 |
| | | * @param encryptKey 加密密钥 |
| | | * @return 加密后的byte[] |
| | | * @throws Exception |
| | | */ |
| | | private static byte[] aesEncryptToBytes(String content, String encryptKey) throws Exception { |
| | | // KeyGenerator kGen = KeyGenerator.getInstance(KEY_ALGORITHM) |
| | | // kGen.init(128) |
| | |
| | | return cipher.doFinal(content.getBytes("utf-8")); |
| | | } |
| | | |
| | | /** |
| | | * AES加密为base 64 code |
| | | * |
| | | * @param content 待加密的内容 |
| | | * @param encryptKey 加密密钥 |
| | | * @return 加密后的base 64 code |
| | | * @throws Exception |
| | | */ |
| | | public static String encrypt(String content, String encryptKey) throws Exception { |
| | | return base64Encode(aesEncryptToBytes(content, encryptKey)); |
| | | } |
| | | |
| | | /** |
| | | * 将base 64 code AES解密 |
| | | * |
| | | * @param encryptStr 待解密的base 64 code |
| | | * @param decryptKey 解密密钥 |
| | | * @return 解密后的string |
| | | * @throws Exception |
| | | */ |
| | | public static String decrypt(String encryptStr, String decryptKey) throws Exception { |
| | | return StringHelper.isEmpty(encryptStr) ? null : aesDecryptByBytes(base64Decode(encryptStr), decryptKey); |
| | | } |
| | | |
| | | /** |
| | | * AES解密 |
| | | * |
| | | * @param encryptBytes 待解密的byte[] |
| | | * @param decryptKey 解密密钥 |
| | | * @return 解密后的String |
| | | * @throws Exception |
| | | */ |
| | | private static String aesDecryptByBytes(byte[] encryptBytes, String decryptKey) throws Exception { |
| | | // KeyGenerator kGen = KeyGenerator.getInstance(KEY_ALGORITHM) |
| | | // kGen.init(128) |