Go4Expert - C Encryption?? Adding Encryption To Text File?

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C Encryption?? Adding Encryption To Text File?

Hi I have this code to send a .txt file between 2 computers, I want to know how can I add simple encryption to it?

Code:

#include <stdio>

#include <conio>



#define CNTRLZ 0x1A



char sourceFileName[] = "H:\\text.txt";

char commStreamName[] = "COM1";

FILE *commStream;

FILE *SouceFile;

char charToSend;

char ReadAccess[] = "r";

char WriteAccess[] = "w";

char errorMsg[] = "fail to open data file\n";

char fileopenflag[] = "r";

char EndOfFile[] = "EOF";



int main(void) {

FILE *fp;

FILE *dp;

int c;



if ((dp = fopen("COM1", "r")) == NULL) {

printf("fail to open COM port\n"); return 1;

}





if ((fp = fopen( sourceFileName, "w")) == NULL) {

printf("fail to open data file\n"); return 1;

}





while ((c = fgetc(fp )) != EOF) {

fputc( c, dp);

putch(c);



}



fputc('*', dp);

fclose(dp);

fclose(fp);

}

I don't have a clue and please can someone give me an idea? also where where I stick the code, I'm still a noob.

Re: C Encryption?? Adding Encryption To Text File?

http://www.go4expert.com/showpost.ph...70&postcount=3
The poster doesn't want help to learn, he just wants a free lunch.
No point in even trying to help.

Re: C Encryption?? Adding Encryption To Text File?

Bunch of fags, get off your computers and step outside for a minute.

Re: C Encryption?? Adding Encryption To Text File?

If you want simple encryption, try this http://en.wikipedia.org/wiki/Caesar_cipher, it's really easy to implement!