Jump to content

Decrypting a file if RC4 key is avaiable


Recommended Posts

  • 2 weeks later...
Does anyone know how to decrypt a file if it is encrypted using RC4 and I am having its Key!!

How to do it ?

Pretty simple.  This is a windows program, download it and use command line to run.

The syntax for this version is of rc4 is:

rc4 key inFile outFile

hxxp: www. dslreports. com/r0/download/994162~acb685196365a7a25e865252b1b62cf0/RC4. zip

One thing to make sure of, double check that the encrypted file isn't marked "Read Only"

If you are using Linux or Mac, you can download and compile this:

hxxp: www. uqtr. ca/~delisle/Crypto/codes/rc4/rc4. c

I compiled it on my box like this:

1.  put rc4. c in a folder on your linux box.

2.  type:

cc rc4. c -o rc4

3.  done

Link to comment
Share on other sites

Well, I didn't mean to step on toes or create apprehension . If anyone wants to verify the zip file download they can goto dslreports.com > forums > vonage (under Voice Over IP - VOIP). In this forum, look for the thread "[Vonage] SIP credentials, RTP300, GPP_K?" (you may have to take the search past 60 days) and in that thread you can goto page 3 and scroll down about 2/3 and look for a post by "rizzo2dial". You will also see my handle there as I'm a regular.

BTW - I found this forum by the people who run this site via their great videos! Stumbled on them in YouTube. Keep up the great work!

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

  • Recently Browsing   0 members

    • No registered users viewing this page.
  • Create New...