How to check & extract password protected files?

[asthagarg2428]

How can I check if a file is password protected and how to extract a password protected file?
Which command do I need for that? and from where can I get all the commands ?

Also, how to implement compression with password?

[huzongyao]

just use the command with param -p ***

[asthagarg2428]

How can I check if a file is password protected before calling extract?

What's the command for that

[asthagarg2428]

just use the command with param -p ***

I think that's for adding password while compressing file, no? (You answered in another question related to set password)