(adsbygoogle = window.adsbygoogle || []).push({}); Hey, this is just something I coded a while back and wanted to show you guys.

Here is the code:

    /*

 * Text cypher by jackrtk

 * usage: something.exe your text goes here!

 * example output: 979b99a15ba9a0a75f97a7979aa39e9e67a5b1

 * 

 * also, heres a challenge: decypher the example output  

*/



#include <stdio.h> 



void main(int argc, char *argv[])

{

	int i,

		k,

		j;

	printf("Encrypted Text: ");

	

	for(k = 1; k != argc; k++)

	{

		for(i = 0; argv[k][i] != 0; i++)

		{

			j = ((argv[k][i]+i)+43);	// algorithm: ((position in array + hex(chr))+43)

			printf("%x",j);

		}

	}

}

BreakDown

Let's focus on 'cypher' code:

argv[k] = the 'k'th argument passed to the program, for example, if you executed:

cypher.exe hello im jack
argv[1] = hello
argv[2] = im
You get the picture...

So, argv[k]; we know that k is the argument number, so 'i' is the char of that argument, example:

cypher.exe hello im jackr
argv[1][3] = "l"
argv[3][1] = "j"

Once we have this character, we apply our algorithm to it. My algorithm is

hex(((argv[k]+i)+43));

When we execute: cypher.exe lol hi

the program executes (to find "l"):

hex(((argv[1][1]+i)+43))
= hex(108+1+43)
= hex(152)
= 98

This procedure is repeated until no characters are left.

kbai; jackrtk.

A tip: Dont use explicit Variable names, it makes it almost impossible for others to help.

Thanks for the advice