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implemented keyLength

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This commit is contained in:
Václav Šmejkal 2022-05-03 18:37:28 +02:00
parent e85a14b253
commit 61ce5d0c1b
3 changed files with 13 additions and 15 deletions
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9
src/decrypter.c
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@ -11,15 +11,14 @@ char*
decryptText(char *text, char *key) decryptText(char *text, char *key)
{ {
//CHECK FOR INVALID key //CHECK FOR INVALID key
if (strlen(key) < KEY_LENGTH) if (strlen(key) < getKeyLength())
{ {
fprintf(stderr, "Key must be at least %d characters long!\n", KEY_LENGTH); fprintf(stderr, "Key must be at least %d characters long!\n", getKeyLength());
exit(INVALID_KEY); exit(INVALID_KEY);
} }
//REDEFINE KEY_LENGTH //REDEFINE keyLength
#undef KEY_LENGTH setKeyLength(strlen(key));
#define KEY_LENGTH strlen(key)
//VARIABLES //VARIABLES
char *returningText; char *returningText;

13
src/encrypter.c
View File

@ -18,7 +18,7 @@ encryptText(char *text, char *keyNew)
srand(time(0)); //TRY TO MAKE RANDOM GENERATION REALLY "RANDOM" srand(time(0)); //TRY TO MAKE RANDOM GENERATION REALLY "RANDOM"
//VARIABLES //VARIABLES
char *key = malloc(KEY_LENGTH); char *key = malloc(getKeyLength());
char *returningText; char *returningText;
char *textBuffer; char *textBuffer;
int *textKeyChain = malloc(strlen(text) * sizeof(int)); int *textKeyChain = malloc(strlen(text) * sizeof(int));
@ -26,23 +26,22 @@ encryptText(char *text, char *keyNew)
if (keyNew != NULL) if (keyNew != NULL)
{ {
if (strlen(keyNew) < KEY_LENGTH) if (strlen(keyNew) < getKeyLength())
{ {
fprintf(stderr, "Key must be at least %d characters long!\n", KEY_LENGTH); fprintf(stderr, "Key must be at least %d characters long!\n", getKeyLength());
exit(INVALID_KEY); exit(INVALID_KEY);
} }
strcpy(key, keyNew); strcpy(key, keyNew);
//REDEFINE KEY_LENGTH //REDEFINE keyLength
#undef KEY_LENGTH setKeyLength(strlen(key));
#define KEY_LENGTH strlen(key)
goto skipKey; goto skipKey;
} }
//LOAD KEY //LOAD KEY
for (int i = 0; i < KEY_LENGTH; i++) for (int i = 0; i < getKeyLength(); i++)
{ {
//SET numberBuffer TO RANDOM NUMBER BETWEEN 0 AND 52 //SET numberBuffer TO RANDOM NUMBER BETWEEN 0 AND 52
numberBuffer = (rand() % 52) + 1; numberBuffer = (rand() % 52) + 1;

6
src/misc.c
View File

@ -103,10 +103,10 @@ generateTextKeyChain(char key[], int *textKeyChain, int textKeyChainSize)
{ {
numberBuffer = i; numberBuffer = i;
//CHECK, IF numberBuffer ISN'T GREATER THAN KEY_LENGTH AND CUT UNUSED LENGTH //CHECK, IF numberBuffer ISN'T GREATER THAN keyLength AND CUT UNUSED LENGTH
while (numberBuffer >= KEY_LENGTH) while (numberBuffer >= getKeyLength())
{ {
numberBuffer -= KEY_LENGTH; numberBuffer -= getKeyLength();
} }
//FILL textKeyChain //FILL textKeyChain