Beefy Boxes and Bandwidth Generously Provided by pair Networks
Do you know where your variables are?
 
PerlMonks  

Re: Encrypting Largish Files

by suaveant (Parson)
on Sep 23, 2001 at 07:30 UTC ( [id://114133]=note: print w/replies, xml ) Need Help??


in reply to Encrypting Largish Files

Well, you could kill two birds with one stone, zip allows you to encrypt a zipfile with a password. That way you can compress and protect in one step... dunno how secure it is, but it's worth looking into

                - Ant
                - Some of my best work - Fish Dinner

Replies are listed 'Best First'.
Re: Re: Encrypting Largish Files
by IndyZ (Friar) on Sep 23, 2001 at 08:56 UTC
    Zip file security is extremely weak. It won't even stop a 5 year old if he can download a few utilities off the net.

    --
    IndyZ
[reply]
      I was curious as to how well it encrypted... any other zippers have that function?

                      - Ant
                      - Some of my best work - Fish Dinner

[reply]
        I think that zip file encryption started with pkzip (I'm not sure, but that's the first place that I saw it), and anybody that wanted to maintain compatibility had to add it to their zip software. If you want to encrypt a zip file, you should probably use a strong algorithm that comes in an encryption package such as GPG.

        --
        IndyZ
[reply]
Re: Re: Encrypting Largish Files
by guillaume (Pilgrim) on Sep 23, 2001 at 22:30 UTC
    In fact zipfile encryption is weak, the cipher is vulnerable to a known plaintext attack, if you already know a part of what is encrypted you can easily break the encryption.

    ---
    Guillaume
[reply]

In Section Seekers of Perl Wisdom

Log In?
Username:
Password:

What's my password?
Create A New User
Domain Nodelet?

www.com | www.net | www.org
Node Status?
node history
Node Type: note [id://114133]
help
Chatterbox?
and the web crawler heard nothing...

How do I use this? • Last hour • Other CB clients
Other Users?
Others drinking their drinks and smoking their pipes about the Monastery: (2)
As of 2024-04-19 18:54 GMT
Sections?
Information?
Find Nodes?
Leftovers?
    Voting Booth?

    No recent polls found