I know this question has been asked before but I am trying to get to the bottom of this. I am trying to encrypt a number of files in a zip file using some sort of decent encryption mechanism. By decent, I mean an algorithm that is either AES256 or upwards and a strong password.
I cannot find what the best way to do this is. More specifically, what algorithm does zip use when the -e switch is used. Also, I have tried 7z that some people recommend but again it is unclear what algorithm is used when a standard zip file is created and not a 7z file.
I have done some digging but I am unable to reach a conclusion - any help would be more than appreciated.
P.s. I can not use GPG or Truecrypt - the file has to be a zip file for various reasons. Briefly, this is because the file will be send electronically and people at the other end a) do not know how to use any of these programs b) will attempt to open the file using winzip. Under no circumstances do I want to send the data insecure but I do wish to send it in a manner which the recipient can use it easily.