/****************************************************************************
Desc: Compose a key buffer from the vector's components.
****************************************************************************/
RCODE XFLAPI F_DataVector::outputKey(
IF_Db * ifpDb,
FLMUINT uiIndexNum,
FLMUINT, // uiMatchFlags, //VISIT: Need to remove this from the interface.
FLMBYTE * pucKeyBuf,
FLMUINT uiKeyBufSize,
FLMUINT * puiKeyLen)
{
RCODE rc = NE_XFLM_OK;
IXD * pIxd;
if (RC_BAD( rc = ((F_Db *)ifpDb)->m_pDict->getIndex( uiIndexNum, NULL, &pIxd, TRUE)))
{
goto Exit;
}
if (RC_BAD( rc = outputKey( pIxd, XFLM_MATCH_IDS | XFLM_MATCH_DOC_ID, pucKeyBuf,
uiKeyBufSize, puiKeyLen, 0)))
{
goto Exit;
}
Exit:
return( rc);
}
int main(int argc, char **argv) {
char key[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
FILE *fin = stdin;
/*
* Get command line arguments. Setup key and input location
*/
switch (argc) {
case 2:
fin = fopen(argv[1], "r");
if (fin == NULL) {
printf("Invalid file: %s. Unable to open for reading.\n", argv[3]);
return -1;
}
case 1:
if (!removeLetter(key, 'J')) {
printf("Could not remove letter J from cipher key.\n");
return -1;
}
break;
case 4:
fin = fopen(argv[3], "r");
if (fin == NULL) {
printf("Invalid file: %s. Unable to open for reading.\n", argv[3]);
return -1;
}
case 3:
if (strcmp(argv[1], "-r")) {
printf("Optional parameter '-r' not found. '%s' found instead.\n", argv[1]);
return -1;
}
if(!removeLetter(key, argv[2][0])) {
printf("Could not remove letter %c from cipher key.\n", argv[2][0]);
return -1;
}
break;
default:
printf("Invalid usage. See below for proper usage.\n");
printf("\t./%s [ -r <character_to_remove> ] [ ciphertext_filepath ]\n", argv[0]);
return -1;
}
/*
* Input cipher and ensure it is valid
*/
char *ciphertext, *plaintext;
int messageLen;
ciphertext = readCipher(fin, INPUT_STEP_SIZE);
messageLen = strlen(ciphertext);
if (validateText(ciphertext, &messageLen) != 0) {
free(ciphertext);
return -1;
}
ciphertext = realloc(ciphertext, sizeof(*ciphertext) * (messageLen + 1));
ciphertext[messageLen] = '\0';
plaintext = calloc(messageLen + 1, sizeof(*plaintext));
strcpy(plaintext, ciphertext);
// close the file as long as it is not stdin
if (fin != stdin)
fclose(fin);
// Output relevant information for error checking
printf("Attempting to crack the following ciphertext with key: %s\n", key);
printf("%s\n", ciphertext);
int iter = 0;
double score = -DBL_MAX, maxScore = -DBL_MAX;
srand(time(NULL)); // randomize seed
// Run until max iteration met
while (iter < MAX_ITERATIONS) {
iter++;
score = simulatedAnnealing(key, ciphertext, plaintext, messageLen);
if (score > maxScore) {
maxScore = score;
decipher(key, ciphertext, plaintext, messageLen);
printf("\nPossible Plaintext found using key:\n");
outputKey(key);
printf("%s\n\n", plaintext);
}
}
free(plaintext);
free(ciphertext);
return 0;
}
