Write a shell script, that decrypts all aes-cbc encrypted files in a folder and decodes the base64 coded filenames

I have some zipped folders with aes-cbc encrypted files. The filenames are base64 coded and has the filename and folder path in the base coded filename. The script needs to do the following: -unzip the archive (packed with winzip) -decrypt all aes-cbc encrypted files in the zip archive (would pass the password to the script in the arguments when calling the script) -decode base64 filenames this is how I now decode the files in mac os, but its too much work: openssl enc -aes-256-cbc -d -in <infile> -out <outfile>