消息加密：用户界面提供将明文加密为密文的选项，以及将密文解密为明文的选项

自己写的基于频率的密文解密程序 1.File List source.txt : the raw text from the router. target.txt : the text encoded. result.txt : the text to be decoded. 2.Task: We created a charactors-to-charactors mapping table. For example: A -> s; B -> Z; ... Using this mapping table, the text from "target.txt" are encoded while the "source.txt" is the raw plain text as the reference corpus. Your target is to find the mapping table, and then decode the text from "result.txt". Send the decoded text to E-mail: gaga.zhn@gmail.com 3.Tips i. The charactors mapping is a kind of a bijective mapping (or one-to-one correspondence). ii. The numbers and others non-alphabets are not changed. 4.Bonus The first three person who sends the correct text and provides his own program will receive a special gift. 5.This is not a group work.

STM32F10x移植ST官方库进行AES-128-CTR加密解密，KEIL5工程文件，包含stm32-cryp-lib库 集成base64编码解码，可以对base64编码的字符串实现解密 详细介绍请看博客https://blog.csdn.net/weixin_43155866/article/details/102650979