moderncrytography

数据加密技术之几种算法 sa-faq-1-data encryption technology several algorithms rsa- faq-1

(C++)语言下文件输入输出函数的一些局限性 数据加密算法原理、实现-(C) language input and output file under some limitations function of data encryption algorithm theory, realization

SM2 SM3 签名，验证签名，加密，解密，很好用的(SM2 signature verification C language implements very good resources for signing signature verification signatures)

锁住/解锁硬盘 - Locks in/the solution to lock the hard disk

软件有限次加密，对软件的使用次数进行限制-finite encryption software, software usage restrictions

一些常用编码，加密算法的c/c++代码，包括，base64,sha1,des,md5等-Some commonly used encoding, encryption algorithm c/c++ Code, including, base64, sha1, des, md5, etc.

rsa的公钥计算，已知道密钥为5的情况下-rsa public key calculation, already know the key to the case of 5

AES的一个C语言编译代码，其中密码长度为128比特(aes 128bits encrption and decrption)

des算法，用vc++写出来的，密码学实验写的程序-des algorithm

Lock Manage 是一个功能比较全面的加密软件。 它具有多种加密方案：如文件口令加密，文件反拷贝加密，软硬盘加密，安装加密，文本加密，批处理加密等等。系统是由Ｃ和汇编写成，可从外部链接于主模块。可单独编译，单独调试。可执行ＥＸＥ／ＣＯＭ程序加密模块已经过长时间的测试分析，其工作性能己十分稳定。可移植性与兼容性很好。另外，代码实现了ＣＳ，ＤＳ不换技术，使其ＳＨＥＬＬ性能难以被ＤＥＢＵＧ识别。其内部密码采用单向不可逆变换，基本实现了不可解，原因在于四个随机密钥只能用穷举法找出。这种可靠原四密钥单向加密技术渗透到了后面的几个程序中。对于反拷贝加密，采用了随机的软指纹生成技术，可生成唯一密钥母盘。硬盘反拷贝在硬盘里产生四密钥，在非母机上程序运行错误。反反汇编可将整个文件的内容加密变换。反跟踪采用了目前十余种通用的反跟踪算法。可抵抗ＤＥＢＵＧ系列软件。批处理和文本加密十分方便，但保密性不太强，只能用于一般用户。-Lock function is a more comprehensive encryption software. It has a wide variety of encryption programs : documents such as password encryption, anti-copy document encryption, hard disk encryption software, the installation of encryption, encrypted text, etc. batch encryption. C system is written and compiled, from the external links in the main module. Separately compiler, debugger alone. EXE executable/COM procedures encryption module has been tested over a long period of analysis, their performance has very stable. Good portability and compatibility. In addition, the implementatio