XOR Encryption Class

Here is a simple XOR encryption class:

Code:

class XOR{ protected: char key[256]; public: XOR(){ key="fjsldjf84937fd7f6s876df52396tegulhghs87f53f8w987r8970w987erSDFJDFLJSGHHEIHWOHGKDFGSLGDKHSLKDGH"; } char* xorStr(char *string){ const static int len = strlen(string); char* temp = new char(len); for(int i = 0; i < len+1;i++) temp[i] = string[i]^key[i]; return temp; } };

Now an example of how to use.
First you create an object of the XOR class:

Code:

XOR* xor = new XOR();

Then to encrypt a string and save it to a variable, you would do:

Code:

char* x=xor->xorStr("lol");

The same function would decrypt the encrypted string, so to get it back, you would do:

Code:

char* orig=xor->xorStr(x);

You can use this to encrypt strings in a hack, or anywhere else

You realize people can view the "lol" string when you call xorStr

Create a separate app to generate encrypted strings, and decrypt them in your actual program...?

its not really encrypting if we can still see the string...

Originally Posted by supercarz1991

its not really encrypting if we can still see the string...

Read the post directly above yours...

Originally Posted by Saltine

Create a separate app to generate encrypted strings, and decrypt them in your actual program...?

There lies the problem, you can't do that with the class you posted

Originally Posted by Refrain

There lies the problem, you can't do that with the class you posted

I realize that now, with my random key generation, I shall fix it, now.
Edit: fixed

Code:

#ifndef _XOR_H
#define _XOR_H
template <int XORSTART, int BUFLEN, int XREFKILLER>

class XorStr
{
private: 
	XorStr();
public: 
	char s[ BUFLEN ];

	XorStr( const char * xs );

	~XorStr()
	{
		for ( int i = 0; i < BUFLEN; i++ ) s[ i ]=0; 
	}
};

template <int XORSTART, int BUFLEN, int XREFKILLER>
XorStr<XORSTART,BUFLEN,XREFKILLER>::XorStr( const char * xs )
{
	int xvalue = XORSTART;
	int i = 0;

	for ( ; i < ( BUFLEN - 1 ); i++ ) 
	{
		s[ i ] = xs[ i - XREFKILLER ] ^ xvalue;
		xvalue += 1;
		xvalue %= 256;
	}

	s[ BUFLEN - 1 ] = 0;
}
#endif

its different from the other one i saw

Originally Posted by Saltine

I realize that now, with my random key generation, I shall fix it, now.
Edit: fixed

You can still find the key that you're using to encrypt the strings

nice memory leak.

Originally Posted by AVGN

Code:

#ifndef _XOR_H
#define _XOR_H
template <int XORSTART, int BUFLEN, int XREFKILLER>

class XorStr
{
private: 
	XorStr();
public: 
	char s[ BUFLEN ];

	XorStr( const char * xs );

	~XorStr()
	{
		for ( int i = 0; i < BUFLEN; i++ ) s[ i ]=0; 
	}
};

template <int XORSTART, int BUFLEN, int XREFKILLER>
XorStr<XORSTART,BUFLEN,XREFKILLER>::XorStr( const char * xs )
{
	int xvalue = XORSTART;
	int i = 0;

	for ( ; i < ( BUFLEN - 1 ); i++ ) 
	{
		s[ i ] = xs[ i - XREFKILLER ] ^ xvalue;
		xvalue += 1;
		xvalue %= 256;
	}

	s[ BUFLEN - 1 ] = 0;
}
#endif

its different from the other one i saw

What a pointless use of templates lol.

[at]Thread:
I'm not really sure why you need to make this a class; it doesn't contain any instance-specific info. Would make a lot more sense as a single function, with a param to set a dynamic key. Also, as soon as someone tries to encrypt a string with more chars than the "key", it's going to break. Not sure why the length of the string is static either

When you encrypt the string "127.0.0.1" you still see the PUSH to the 127.0.0.1.
If you edit it to "127.0.0.2", the program would encrypt 127.0.0.2.

Originally Posted by Jason

it cant be a single function. it has to store the unencrypted string somehow and clean it up later.

Originally Posted by ISmokeWeedAmICoolNow

it cant be a single function. it has to store the unencrypted string somehow and clean it up later.

Of course you're right! Functions can't return data, how stupid of me.

Originally Posted by Jason

Of course you're right! Functions can't return data, how stupid of me.

what are you going to return? maybe a class?

XOR Encryption Class

Post a Reply

Similar Threads

Tags for this Thread