为防止差分功耗分析攻击，SM4加密算法添加了随机掩码，利用随机掩码打乱了结果数据和功耗的相关性，从而实现抗差分功耗分析攻击的能力。
To prevent the differential power analysis attack, SM4 encryption algorithm adds random mask mask disrupted by random correlation result data and power, enabling resistance to differential power analysis attacks. (2016-06-01, Visual C++, 907KB, 下载19次)
问客是用VC编写的加密软件，能够对保密文件进行简单的加密，保证文件的安全性。
Asked passenger is written in VC encryption software, can simply encrypt confidential files to ensure file security. (2010-03-28, Visual C++, 509KB, 下载6次)