Can set the "encrypt filenames" of 7z?

[Polar-Pumpkin]

I created a password-protected archive, but I found that I just needed a password for extraction, and I was still free to view the list of files. So I searched for related methods and found that 7zip supports "encrypt file names", which requires a password when opening the archive, can I do this in bit7z?

[Polar-Pumpkin]

I found the setFormatProperty method, and based on the search, I found the -mhe command line parameter can encrypt the file header, thereby achieving the effect of encrypting the file name. At first I thought I needed to pass in mhe, and combined with the tm parameter mentioned in the document, I realized that I didn't need to specify m

[rikyoz]

Hi.
In addition to the setFormatProperty method, you might want to look at the setPassword method overload, which takes a second boolean parameter specifying whether or not to encrypt the headers.
It's perhaps a cleaner way of enabling header encryption, as you don't need any knowledge of 7-Zip format properties to use it (but functionally it's equivalent to what you already did).

[Polar-Pumpkin]

Thank you so much for telling me this method! I thought this was a parameter for the encryption method, such as the encryption algorithm or something. Now I know that I misunderstood it 🤣

[rikyoz]

You're welcome!

I thought this was a parameter for the encryption method, such as the encryption algorithm or something. Now I know that I misunderstood it 🤣

To be honest, I don't really like this method signature myself.
I have long since come to the conclusion that bool parameters should be avoided (at least most of the time).
I have half a mind to add a more explicit method overload using an enumeration parameter instead of a boolean, e.g. using an enum like this:

enum struct EncryptionLevel {
    DataOnly, // Or ContentsOnly
    WholeArchive // Or just HeaderEncryption
};
//...
writer.setPassword("password", EncryptionLevel::WholeArchive);

I think this would be more readable than the current writer.setPassword("password", true);.
But I'm still not sure about the names of the enumeration values.
As they say, naming things is one of the hardest problems in computer science. 😅