Java基于SM4算法实现文件加密 SM4FileUtils

public class SM4FileUtils {
    public SM4FileUtils() {
    }

    public static String encrypt(String key, String filePath) {
        String secretKey = "";

        try {
            SM4Utils sm4 = new SM4Utils();
            sm4.setSecretKey(key);
            byte[] fileByte = ByteUtil.getBytes(filePath);
            byte[] encryptByte = sm4.encryptData_ECB(fileByte);
            boolean res = ByteUtil.getFile(encryptByte, filePath);
            if (res) {
                secretKey = key;
            }
        } catch (Exception var7) {
            var7.printStackTrace();
        }

        return secretKey;
    }

    public static boolean decrypt(String filePath, String secretKey) {
        boolean res = false;

        try {
            SM4Utils sm4 = new SM4Utils();
            sm4.setSecretKey(secretKey);
            byte[] encryptByte = ByteUtil.getBytes(filePath);
            byte[] decryptByte = sm4.decryptData_ECB(encryptByte);
            res = ByteUtil.getFile(decryptByte, filePath);
        } catch (Exception var6) {
            var6.printStackTrace();
        }

        return res;
    }

    public static void main(String[] args) {
    }
}