在线加密解密工具
http://tool.chacuo.net/cryptdes
https://csrc.nist.gov/projects/cryptographic-standards-and-guidelines
http://www.st.com/en/embedded-software/x-cube-cryptolib.html?ecmp=tt4183_gl_social_sep2016
https://wenku.baidu.com/view/a50c4accccbff121dc368396.html
http://www.51hei.com/bbs/dpj-46000-1.html
http://blog.csdn.net/qq_31878855/article/details/69396791
翻阅的资料放到百度云上。链接：http://pan.baidu.com/s/1jIvazfK 密码：5jis
https://codereview.stackexchange.com/questions/2050/tiny-encryption-algorithm-tea-for-arbitrary-sized-data
https://www.cnblogs.com/chevin/p/5681228.html