加解密的最基本常识，帮助你了解最简单的加解密知识-Encryption and decryption of the most basic common sense, to help you understand the most simple knowledge of encryption and decryption

encrypt a text with shifted letters the alphabet. Before that are deleted all spaces and non alpha characters. upper letters-encrypt a text with shifted letters the alphabet. Before that are deleted all spaces and non alpha characters. upper letters

基于傅里叶变换的数字盲水印加解密 加密文件encode-python.py, 解密文件decode-python.py 依赖环境：python+opencv 命令行参数 encode： --image [源文件] --watermark [水印文件] --result [生成目标文件地址] [--alpha 混杂强度] decode: --original [源文件] --image [待解密文件] --result [水印生成文件地址](Digital blind wate