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implemented generateTextKeyChain

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This commit is contained in:
Václav Šmejkal 2022-04-27 18:07:26 +02:00
parent adf9f68dcb
commit 0a2066e55c
1 changed files with 7 additions and 30 deletions
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37
src/encrypter.c
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@ -21,8 +21,8 @@ encryptText(char *text, char *keyNew)
char *key = malloc(KEY_LENGTH); char *key = malloc(KEY_LENGTH);
char *returningText; char *returningText;
char *textBuffer; char *textBuffer;
int textKeyChain[strlen(text)]; int *textKeyChain = malloc(strlen(text) * sizeof(int));
int numberBuffer; int numberBuffer = 0;
if (keyNew != NULL) if (keyNew != NULL)
{ {
@ -64,28 +64,7 @@ encryptText(char *text, char *keyNew)
skipKey: skipKey:
//LOAD textKeyChain //LOAD textKeyChain
for (int i = 0; i < (sizeof(textKeyChain) / sizeof(int)); i++) generateTextKeyChain(key, textKeyChain, strlen(text));
{
numberBuffer = i;
//CHECK, IF numberBuffer ISN'T GREATER THAN KEY_LENGTH AND CUT UNUSED LENGTH
while (numberBuffer >= KEY_LENGTH)
{
numberBuffer -= KEY_LENGTH;
}
//FILL textKeyChain
if ((numberBuffer + 1) % 3 == 0)
{
textKeyChain[i] = key[numberBuffer] * key[numberBuffer + 1];
} else if ((numberBuffer + 1) % 2 == 0)
{
textKeyChain[i] = key[numberBuffer] - key[numberBuffer + 1];
} else
{
textKeyChain[i] = key[numberBuffer] + key[numberBuffer + 1];
}
}
//ACTUALLY ENCRYPT TEXT //ACTUALLY ENCRYPT TEXT
for (int i = 0; i < strlen(text); i++) for (int i = 0; i < strlen(text); i++)
@ -93,20 +72,18 @@ encryptText(char *text, char *keyNew)
textKeyChain[i] -= (int) text[i]; textKeyChain[i] -= (int) text[i];
} }
numberBuffer = 0;
//COUNT REQUIRED SIZE FOR returningText //COUNT REQUIRED SIZE FOR returningText
for (int i = 0; i < (sizeof(textKeyChain) / sizeof(int)); i++) for (int i = 0; i < strlen(text); i++)
{ {
numberBuffer += countIntLength(textKeyChain[i]); numberBuffer += countIntLength(textKeyChain[i]);
} }
//ALLOCATE returningText (WITH THE SEPARATORS) //ALLOCATE returningText (WITH THE SEPARATORS)
returningText = malloc(numberBuffer + (sizeof(textKeyChain) / sizeof(int) - 1)); returningText = malloc(numberBuffer + strlen(text) - 1);
strcpy(returningText, ""); strcpy(returningText, "");
//LOAD returningText //LOAD returningText
for (int i = 0; i < (sizeof(textKeyChain) / sizeof(int)); i++) for (int i = 0; i < strlen(text); i++)
{ {
textBuffer = malloc(countIntLength(textKeyChain[i])); textBuffer = malloc(countIntLength(textKeyChain[i]));
@ -114,7 +91,7 @@ encryptText(char *text, char *keyNew)
strcat(returningText, textBuffer); strcat(returningText, textBuffer);
if (i != (sizeof(textKeyChain) / sizeof(int) - 1)) if (i != strlen(text) - 1)
{ {
strcat(returningText, ENCRYPTION_SEPARATOR_STRING); strcat(returningText, ENCRYPTION_SEPARATOR_STRING);
} }