Добавил свое решение для сервера

master
Khabalov Pavel 6 months ago
parent 0120fb3ccb
commit 453774dc91

@ -0,0 +1,51 @@
#include <time.h>
#include <stdio.h>
#include <stdlib.h>
#define _GNU_SOURCE
#include <string.h>
unsigned int MakeChecksum(unsigned char *buffer, int len)
{
unsigned int result;
result = 0;
for (int i = 0; i < len; i = i + 1) {
result = (result << 3 | result >> 0x1d) ^ buffer[i];
}
return result;
}
unsigned char *make_message(const unsigned char* s) {
int len = strlen(s);
unsigned char* message = (char*) calloc(1, len + 11);
message[8] = len + 7;
message[10] = len;
message[9] = 0x2A;
memcpy(message + 11, s, len);
*((unsigned int*)message + 1) = time(0LL);
*(unsigned int*) message = MakeChecksum(message + 4, len + 7);
return message;
}
int main() {
unsigned char message[] = "g1mm3_th3_k3y";
size_t len = strlen(message);
for (int i = 0; i < len; i++) {
message[i] ^= 42;
}
fwrite(make_message(message), 1, strlen(message) + 11, stdout);
return 0;
}
Loading…
Cancel
Save