How to achieve 7z format compression?

[kyjdp]

Thank you very much, I use the above code, press the file successfully!

I would like to know:

1. how to set the password of the compressed file?

2.How do I extract a compressed file with a password?

I use the following command line to unzip the compressed file with the password(filepassword),-p is the encrypted parameter:

7z.exe e file.7z -pfilepassword

3.How to encrypt the password (do not directly display the password) Otherwise, through some binary view tool, can view my password :oops: