void fileCrypt(char* filenameIn, char* password) {
int fileLen;
int filenameLen = strlen(filenameIn);
int passLen = strlen(password);
char *fileInputTemp, *fileInput, *fileOutput;
char *filenameOut;
fileInputTemp = readFile(filenameIn);
fileLen = strlen(fileInputTemp);
filenameOut = (char*) malloc(strlen(filenameIn) + 6);
fileInput = (char*) malloc(passLen + fileLen + 1);
fileOutput = (char*) malloc(passLen + fileLen + 1);
if (strstr(filenameIn, ".crpt" )) {
printf("Running decryption protocol on %s!\n", filenameIn);
strcpy(fileInput, fileInputTemp);
XORCrypt(fileInput, fileOutput, password);
strcpy(fileInput, fileOutput);
subDecodeString(fileInput, fileOutput, 6);
strcpy(fileInput, fileOutput);
transDecodeString(fileInput, fileOutput);
memset(fileInput, 0, passLen+1);
strncpy(fileInput, fileOutput, passLen);
if (strcmp(fileInput, password)) {
printf("This file cannot be decrypted with your password. You do not have authority!\n");
} else {
printf("File decrypted. Writing back data!\n");
memset(filenameOut, 0, filenameLen);
strncpy(filenameOut, filenameIn, filenameLen-5);
writeFile(filenameOut, &fileOutput[passLen]);
remove(filenameIn);
}
} else {
printf("Running Encryption protocol on %s!\n", filenameIn);
sprintf(fileInput, "%s%s", password, fileInputTemp);
transEncodeString(fileInput, fileOutput);
strcpy(fileInput, fileOutput);
subEncodeString(fileInput, fileOutput, 6);
strcpy(fileInput, fileOutput);
XORCrypt(fileInput, fileOutput, password);
sprintf(filenameOut, "%s.crpt", filenameIn);
printf("File encrypted. Writing back data!\n");
writeFile(filenameOut, fileOutput);
remove(filenameIn);
}
free (fileInputTemp);
free (fileInput);
free (fileOutput);
}
//us -> client
void OSIEncryption::EncryptForClient( const BYTE *in, BYTE *out, int len )
{
XORCrypt( in, out, len );
}
//server -> us
void OSIEncryption::DecryptFromServer( const BYTE *in, BYTE *out, int len )
{
XORCrypt( in, out, len );
}
