bat给文件加随机字符加密重命名。

根据后缀替换(*.pptx)

@echo off & setlocal enableDelayedExpansion
set "dic=ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789"
set /a bits=6
for %%a in (*.pptx) do (
    set "rand_pwd="
    for /L %%i in (1 1 !bits!) do (
        set /a j=!random! %% 62
        for %%j in (!j!) do set "rand_pwd=!rand_pwd!!dic:~%%j,1!"
    )
    ren "%%~fa" "%%~na@!rand_pwd!%%~xa"
)
pause