diff --git a/src/v-check-user-password.c b/src/v-check-user-password.c
new file mode 100755
index 00000000..33f7cc71
--- /dev/null
+++ b/src/v-check-user-password.c
@@ -0,0 +1,85 @@
+/***************************************************************************/
+/*  v_check_user_password.c                                                */
+/*                                                                         */
+/*  This program compare user pasword from input with /etc/shadow          */
+/*  To compile run:                                                        */
+/*  "gcc -lcrypt v_check_user_password.c -o v-check-user-password"         */
+/*                                                                         */
+/*  Thanks to: bogolt, richie and burus                                    */
+/*                                                                         */
+/***************************************************************************/
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <sys/types.h>
+#include <pwd.h>
+#include <shadow.h>
+#include <time.h>
+#include <string.h>
+
+
+int main (int argc, char** argv) {
+    /* define ip */
+    char *ip = "127.0.0.1";
+
+    /* check argument list */
+    if (3 > argc) {
+        printf("Error: bad args\n",argv[0]);
+        printf("Usage: %s user password [ip]\n",argv[0]);
+        exit(1);
+    };
+
+    /* check ip */
+    if (4 <= argc) {
+      ip = (char*)malloc(strlen(argv[3]));
+      strcpy(ip, argv[3]);
+    }
+
+    /* format current time */
+    time_t lt = time(NULL);
+    struct tm* ptr = localtime(&lt);
+    char str[280];
+    strftime(str, 100, "%Y-%m-%d %H:%M:%S ", ptr);
+
+    /* open log file */
+    FILE* pFile = fopen ("/usr/local/vesta/log/auth.log","a+");
+    if (NULL == pFile) {
+        printf("Error: can not open file %s \n", argv[0]);
+        exit(12);
+    }
+
+    /* parse user argument */
+    struct passwd* userinfo = getpwnam(argv[1]);
+    if (NULL != userinfo) {
+        struct spwd* passw = getspnam(userinfo->pw_name);
+        if (NULL != passw) {
+            char* cryptedPasswrd = (char*)crypt(argv[2], passw->sp_pwdp);
+            if (strcmp(passw->sp_pwdp,crypt(argv[2],passw->sp_pwdp))==0) {
+                /* concatinate time with user and ip */
+                strcat(str, userinfo->pw_name);
+                strcat(str, " ");
+                strcat(str, ip);
+                strcat(str, " successfully logged in \n");
+                fputs (str,pFile);      /* write */
+                fclose (pFile);         /* close */
+                exit(EXIT_SUCCESS);     /* exit */
+            } else {
+                /* concatinate time with user string */
+                printf ("Error: password missmatch\n");
+                strcat(str, userinfo->pw_name);
+                strcat(str, " ");
+                strcat(str, ip);
+                strcat(str, " failed to login \n");
+                fputs (str,pFile);      /* write */
+                fclose (pFile);         /* close */
+                exit(9);                /* exit */
+            };
+        }
+    } else {
+        printf("Error: no such user\n",argv[1]);
+        exit(3);
+    };
+
+    return EXIT_SUCCESS;
+};