Results for "Category: Security"

Run's a file or an application with a different user account than the user logged on. There was a small problem with type marshling, but it's now fixed!

This code will enum all groups and users currently available on your local machine the pure .NET way. There is no need of declaring some APIs.

I took this code from MSDN's November Magazine and used it in many project of mine..Its very useful security measure. I did change it to make it more understandable for all you .net coders there. Zip file includes a type lib and an example project. Hope you guys find it useful.

Cold Steel - Defender is a file encryption/decryption utility (using 3DES) that gives you the option to use a "USB Hard drive" as a secondary means of security in addition to just using a password. A USB drive is not required to use this program, but is suggested, as it will insure that only the person who knows the password -and- has the physical USB DRIVE can decrypt a file. Nothing is stored on your USB drive; we only extract some unique information from the USB drive and create a key from it.

This little sample shows the use of the ASP.NET form authentication. It comes with forms for registration/login/edit user data/logoff. The data is saved in a database using oledb. If you like this sample, please don't forget to vote...

The idea is that when the client connects to a server, each of the nodes create a pair of keys, and each send their public keys to the other side. after that each node encrypts the data using the other node's public key and decrypts the data it recieves using its own private key. almost impossible for a sniffer to decrypt the data. Remember that this is a just a sample on how to do this and it does not have many features including events and async data tranfer.

Encryption / Decryption of String

Cool KeyGenerator for implement in your application.Make your application strong. KeyGenerator generates an unique serial number using the username. Just download it and see the rest. Sorry my bad english.. :P La aplicacion tiene los comentarios en español tambien. :P

This code will encrypt and decrypt files. The files are stored in 2 folders called encrypted and decrypted files on the c drive. These folders are created automatically. Include the following namespaces: System.IO, System.Text, System.Security.Cryptography

This program blocks messenger service spam. I saw that there was no thing for VB.NET so here it is. This code also shows registry adding, keys, shell commands, some basic form functions, system tray icon in VB.NET, getting the application path in VB.NET, short code, tons of comments. A similar program like this might cost you $ 30 on web sites. Get it for free! HOPE YOU GUYS ENJOY IT AND VOTE FOR ME. Visit www.fusai.rules.it for more software.

A file that replaces the old coder.c. Thanks to Brett Taylor. Found at http://www.cprogramming.com/source.html

*(UPDATED)* ADDED: -Code Re-written -Now updates file size if you no the file has been changed by a program. This program makes a list of all the .ini .sys and .com files on you hard-drive in the c:\windows directory and then calculates there size and keeps them in a log. and then every time the program starts it checks the file sizes against the logged ones to see if they differ, if they do then it tells you. I made this because virusses can sometimes alter files and hide inside them so this basicly keeps a eye on them..

This is an early version of the new password program I am working on, it saves Passwords to disk with very low level encryption and it allows you to call it with-In dos prompt with arguments. Please tell me what you think.

Have you ever fogot a password, but it is still inside your program, only that it is hidden with astricks? This source will show you how to remove those astricks and show whats really there. (see screenshot)

*UPDATED* Now uses a more recursive and less pattern oriented algorithm. Basically encrypts a text type file using a simple recursive character shift techinque. Pretty basic, but powerful.

This program is my attempt at encryption. It's fairly secure, I think. It's definitely not a professional job, but it'll do. I devised a funky key representation/generation scheme. Check it out! Read the documentation for much more detail on how to operate it. (Tomb.txt)

It reads the binary of a file, and outputs it in reverse so the new "encrypted" file can't be normally read. To decrypt encode the new file and it will be reversed again, restoring it back to normal. Its pretty handy, and simple, please rate this code.

This code decrypts the passwords stored in a person's computer in the file *.pwl. This is where the passwords are stored for anything where someone has used the "save username and password" feature on a program, like internet dial-up. This is the only C source code of its kind at this site!! Please remember to RATE this awesome code!

This is not really meant as a repost of the one Jared Bruni did (there are some similarties, I admit...only in two cases); this is more of a demonstration of a more efficient way to perform the same task (i.e. no dynamic memory required and writting directly to the file). And, just to keep things a little interesting, this one can delete stuff from a list containing filenames. Vote/Comment/whatever, just keep the "you stole someone else's idea" stuff/flames (which I didn't) to a minimum, k? (update: fixed a slight logic bug and added a little extra error checking in the getline function) update 5-12-02: It's fixed now, according to the software I used to test it (R-undelete). Give it a whirl :)

This is a password script. Every charachter the user input it displays a star. the password is kcTHEgreat. Catches Control c (Taught to me by a friend :)) so the only way out is to enter the correct password. If you like and think it's secure put it in your autoexec.bat