java实现AESECB 32位加密解密的方案
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;
}
}
}
0条评论