diff --git a/libc/inc/ipc/ipc.h b/libc/inc/ipc/ipc.h
index ed2413d..ce0ad4c 100644
--- a/libc/inc/ipc/ipc.h
+++ b/libc/inc/ipc/ipc.h
@@ -5,6 +5,8 @@
 
 #pragma once
 
+
+
 /// @brief Permission details of an IPC object.
 struct ipc_perm {
     /// Key supplied to msgget(2).
@@ -22,3 +24,11 @@ struct ipc_perm {
     /// Sequence number.
     unsigned short __seq;
 };
+
+
+/// @brief Returns a possible key
+/// @param path file path
+/// @param id integer
+/// @return IPC key
+key_t ftok( char *path, int id);
+
diff --git a/libc/src/ipc/ipc.c b/libc/src/ipc/ipc.c
index 7e1a213..af82f51 100644
--- a/libc/src/ipc/ipc.c
+++ b/libc/src/ipc/ipc.c
@@ -10,6 +10,11 @@
 #include "ipc/sem.h"
 #include "ipc/shm.h"
 #include "ipc/msg.h"
+//#include "fs/vfs_types.h"
+//#include "fs/vfs.h"
+#include "fcntl.h"
+#include "sys/stat.h"
+#include "stdio.h"
 
 _syscall3(void *, shmat, int, shmid, const void *, shmaddr, int, shmflg)
 
@@ -33,3 +38,31 @@ _syscall5(long, msgrcv, int, msqid, struct msgbuf *, msgp, size_t, msgsz, long,
 
 _syscall3(long, msgctl, int, msqid, int, cmd, struct msqid_ds *, buf)
 
+key_t ftok(char *path, int id){
+
+
+    /*int fd;
+
+    fd=open(path, O_RDONLY, 0777);*/
+    
+    /*
+        if (() == -1){
+        errno = ENOENT;
+        return -1;
+    }
+    */
+    struct stat_t st;   //struct containing the serial number and the device number of the file 
+    if (stat(path, &st)<0){
+        errno = ENOENT;
+        //printf("Error finding the serial number, check Errno...\n");
+        return -1;   
+    }
+    //printf("Serial number: %d\n", st.st_ino);
+
+
+    //taking the upper 8 bits from the lower 8 bits of id, the second upper 8 bits from the lower 8 bits of the device number of the provided pathname, and the lower 16 bits from the lower 16 bits of the inode number of the provided pathname
+
+    return ((st.st_ino & 0xffff) | ((st.st_dev & 0xff) << 16) | ((id & 0xffu) << 24));
+
+}
+
diff --git a/programs/tests/t_semget.c b/programs/tests/t_semget.c
index dab2594..ac221e3 100644
--- a/programs/tests/t_semget.c
+++ b/programs/tests/t_semget.c
@@ -1,8 +1,17 @@
 //test
-#include <ipc/sem.h>
+#include "ipc/sem.h"
+#include "stdio.h"
 int main()
 {
-    long i = semget(0,0,0);  //checking if the syscalls are already linked
+
+    key_t i = ftok("/test80.txt", 5);  //checking if the syscalls are already linked
+    //long i = semget(0,0,0);
     
+    if (i == -1){
+        printf("Error with IPC_KEY\n");
+        return -1;
+    }
+    
+    printf("IPC_KEY: %d\n", i);
     return 0;
-}
+}
\ No newline at end of file