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User Name
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Uranium-239 |
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Unique Hits
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1,317 |
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Real Name
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Andrew Carter |
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Location
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United Kingdom
Berkshire |
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Occupation
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- - - |
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Gender
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- - - |
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Age
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17 Years Old |
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WebSite
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isitthursday.com |
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Basic Steganography
Security
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Steganography is an indirect form of encryption which basically involves hiding messages in files, usually it mixes in with encryption on its own.
http://www.coderprofile.com/source-code/389/bitmap-steganographer
This shows a program I made to hide messages in a bitmap image file.
It works because the first 54 bytes of a Bitmap File are the headers.
Yet, the integer at the offset 10, (10-14), specifies where the bitmap colour data starts.
So, if we modify the offset of the beggining of the bitmap colour data, we can hide messages between the headers and the raw data =]
You can experiement with other file formats using the same principle, just remember that with Hex editing software it is easy to find raw data, encoding it usually does the trick to make it that bit more secure. View In Full
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2 Comments |
6.00 out of 10 |
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Buffer Overflow Protection
Software Development
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The above code is vunerable to Buffer Overflow in two locations
Unfortunatly you see it now in lots of code.
The program gets a file name and prints it to the screen. If the file name is given in the first arguement it copys that into the buffer and prints the buffer, if not it asks the user for it.
Is the first vunerability.
This does not take into account size of the buffer and which just write everything it gets into there. So if the user types in more than 100 charachters the buffer will overflow and the program may crash.
strcpy also does not take into account the size of a buffer.
The Following code is not vunerable to buffer overflow:
[code]
#include <stdio.h>
#include <string.h>
int main(int argc,char **argv){
char f View In Full
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2 Comments |
5.33 out of 10 |
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Webcam Viewer
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C
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202 Days Ago
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1
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Yes
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7,870 Chrs
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Lets you view your webcam and save snapshots
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Myspace & Twitter Password Recovery [MSIE - Intelliforms]
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C
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288 Days Ago
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0
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Yes
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5,265 Chrs
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More proof of concept than anything, currently only set up for Myspace and Twitter but you can modify it for whatever you like really. I did do one which used the history to get a list of visited site
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Conway's Game of Life
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C
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328 Days Ago
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0
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4,085 Chrs
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Implementation of Conway's Game of Life in C.
- I understand the code for checking neighbours can be optimized, however in the intrests of speed, thats probably the quickest way of doing it in term
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Thanks man, i updated my pass gen again, with less needs of using cout so many times.
Cheers bud.
Otoom
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Lol, i would say they are reading that :-P
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Are you three friends or something, ?
welcome, welcome
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Vista >linux
Uranium==Dio>hav0c
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Haha, Love the site!
Welcome to CP.
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Vista sucks more then Dio btw, so if you use that shit, you've been officially
garyfied by Dio
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Nice source codes. Welcome to the site. :)
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Andrew Carter (17)
United Kingdom, Berkshire |
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Uranium-239 has 1 fans
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