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created padding in encrypter

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lot of pain
This commit is contained in:
Václav Šmejkal 2024-11-20 21:41:21 +01:00
parent 5cc04d94b7
commit 1aab7bf996
Signed by: ENGO150
GPG Key ID: 4A57E86482968843
1 changed files with 85 additions and 22 deletions
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107
src/core/lib/encrypter.c
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@ -55,53 +55,116 @@ why2_output_flags why2_encrypt_text(char *text, char *key)
why2_set_memory_identifier("core_decrypt");
//VARIABLES
char *key = NULL;
char *key_new = NULL;
char *text_new = NULL;
char *returning_text = NULL;
char *text_buffer = NULL;
int *text_key_chain = why2_malloc(sizeof(int) * strlen(text));
int *text_key_chain;
int number_buffer = 0;
if (key_new != NULL)
if (key != NULL)
{
//CHECK FOR INVALID key
if ((check_exit_code = why2_check_key(key_new)) != WHY2_SUCCESS)
//CHECK FOR INVALID key_new
if ((check_exit_code = why2_check_key(key)) != WHY2_SUCCESS)
{
why2_clean_memory("core_decrypt");
return why2_no_output(check_exit_code);
}
key = why2_strdup(key_new);
key_new = why2_strdup(key);
//REDEFINE keyLength
why2_set_key_length(strlen(key));
why2_set_key_length(strlen(key_new));
} else //LOAD KEY
{
key = why2_generate_key(why2_get_key_length());
key_new = why2_generate_key(why2_get_key_length());
}
//PADDING
if (why2_get_flags().padding > 0)
{
why2_list_t split_text = WHY2_LIST_EMPTY; //LIST OF text SPLIT INTO CHARS
//ADD CHARS
for (unsigned long i = 0; i < strlen(text); i++)
{
why2_list_push(&split_text, &(text[i]), sizeof(text[i])); //ADD
}
//OBTAIN SEED FROM key_new
srand(why2_sum_segment(key_new));
//ADD PADDING TO split_text LIST
for (unsigned long i = 0; i < why2_get_flags().padding; i++)
{
unsigned long random_position = (unsigned long) (rand() % (why2_list_get_size(&split_text))); //GET RANDOM POSITION
char random_char;
why2_random(&random_char, sizeof(random_char)); //GENERATE COMPLETELY RANDOM CHARACTER
//INSERT RANDOM VALUE
why2_node_t *inserted_node = why2_malloc(sizeof(why2_node_t)); //ALLOCATE NODE
inserted_node -> value = why2_malloc(sizeof(random_char)); //ALLOCATE VALUE
memcpy(inserted_node -> value, &random_char, sizeof(random_char)); //INSERT DATA
//INSERT INTO LIST
if (random_position != 0) //SHOULDN'T BE FIRST
{
why2_node_t *node_before = split_text.head;
for (unsigned long j = 0; j < random_position - 1; j++) node_before = node_before -> next; //SCROLL TO THE POSITION
inserted_node -> next = node_before -> next; //SEW THE LIST BACK
node_before -> next = inserted_node;
} else //ADD BEFORE THE WHOLE LIST
{
inserted_node -> next = split_text.head;
split_text.head = inserted_node;
}
}
//PUT PADDED TEXT INTO text_new
text_new = why2_malloc(why2_list_get_size(&split_text) + 1);
why2_node_t *buffer = split_text.head;
why2_node_t *buffer_2;
unsigned long index_buffer = 0;
do
{
text_new[index_buffer++] = *(char*) buffer -> value; //COPY VALUE
buffer_2 = buffer;
buffer = buffer -> next; //ITER
why2_deallocate(buffer_2); //DEALLOCATION
} while (buffer != NULL);
} else text_new = why2_strdup(text); //USE TEXT WITHOUT PADDING
text_key_chain = why2_malloc(sizeof(int) * strlen(text_new));
//LOAD text_key_chain
why2_generate_text_key_chain(key, text_key_chain, strlen(text));
why2_generate_text_key_chain(key_new, text_key_chain, strlen(text_new));
//ACTUALLY ENCRYPT TEXT
for (int i = 0; i < (int) strlen(text); i++)
for (int i = 0; i < (int) strlen(text_new); i++)
{
text_key_chain[i] = why2_get_encryption_operation()(text_key_chain[i], (int) text[i]);
text_key_chain[i] = why2_get_encryption_operation()(text_key_chain[i], (int) text_new[i]);
}
//OUTPUT FORMATS
if (why2_get_flags().format == WHY2_OUTPUT_TEXT) //NORMAL 420.-69 FORMAT
{
//COUNT REQUIRED SIZE FOR returning_text
for (int i = 0; i < (int) strlen(text); i++)
for (int i = 0; i < (int) strlen(text_new); i++)
{
number_buffer += why2_count_int_length(text_key_chain[i]);
}
//ALLOCATE returning_text (WITH THE SEPARATORS)
returning_text = why2_calloc(number_buffer + strlen(text), sizeof(char));
returning_text = why2_calloc(number_buffer + strlen(text_new), sizeof(char));
//LOAD returning_text
for (int i = 0; i < (int) strlen(text); i++)
for (int i = 0; i < (int) strlen(text_new); i++)
{
number_buffer = sizeof(int) * why2_count_int_length(text_key_chain[i]);
@ -111,23 +174,23 @@ why2_output_flags why2_encrypt_text(char *text, char *key)
strcat(returning_text, text_buffer);
if (i != (int) strlen(text) - 1)
if (i != (int) strlen(text_new) - 1)
{
returning_text[strlen(returning_text)] = why2_get_encryption_separator();
}
}
} else if (why2_get_flags().format == WHY2_OUTPUT_BYTE) //FUCKED BUT SHORT(ER) OUTPUT
{
number_buffer = (strlen(text) + 1) * 2; //EACH CHARACTER WILL BE SPLIT INTO TWO CHARS AND FIRST TWO WILL BE LENGTH OF text
number_buffer = (strlen(text_new) + 1) * 2; //EACH CHARACTER WILL BE SPLIT INTO TWO CHARS AND FIRST TWO WILL BE LENGTH OF text_new
returning_text = why2_calloc(number_buffer + 1, sizeof(char)); //ALLOCATE
//SET LENGTH
returning_text[0] = (strlen(text) & 0x7f) + 1; //+1 BECAUSE WE DON'T WANT \0
returning_text[1] = (strlen(text) >> 7) + 1;
returning_text[0] = (strlen(text_new) & 0x7f) + 1; //+1 BECAUSE WE DON'T WANT \0
returning_text[1] = (strlen(text_new) >> 7) + 1;
//PUT THE text_key_chain INTO returning_text DIRECTLY
for (unsigned long i = 0; i < strlen(text); i++)
for (unsigned long i = 0; i < strlen(text_new); i++)
{
//BUILD returning_text
returning_text[2 + (i * 2)] = text_key_chain[i] & 0x7f;
@ -148,9 +211,9 @@ why2_output_flags why2_encrypt_text(char *text, char *key)
why2_output_flags output =
{
returning_text, //ENCRYPTED TEXT
key, //GENERATED/USED KEY
why2_count_unused_key_size(text, key), // NUMBER OF WHY2_UNUSED CHARS IN KEY
why2_count_repeated_key_size(text, key), //NUMBER OF REPEATED CHARS IN KEY
key_new, //GENERATED/USED KEY
why2_count_unused_key_size(text_new, key_new), // NUMBER OF WHY2_UNUSED CHARS IN KEY
why2_count_repeated_key_size(text_new, key_new), //NUMBER OF REPEATED CHARS IN KEY
why2_compare_time_micro(start_time, finish_time), // ELAPSED TIME
WHY2_SUCCESS //EXIT CODE
};