--- clit18/lib/litdrm.c.bak	2004-05-16 17:51:04.000000000 +0300
+++ clit18/lib/litdrm.c	2007-09-09 20:30:41.115715406 +0300
@@ -24,6 +24,7 @@
 #include <stdlib.h>
 #include <string.h>
 #include <time.h>
+#include <stdio.h>
 #include "litlib.h"
 #include "litinternal.h"
 #include "d3des.h"
@@ -31,7 +32,7 @@
 
 static int calculate_deskey(lit_file *, U8 key[8]);
 static void hash_bytes(SHA_CTX * pctx, U8 * pdata, int length, int padding);
-static void random_data(U8 * pData, int len);
+static int random_data(U8 * pData, int len);
 
 #define SEALED_SIZE 16
 
@@ -245,7 +246,9 @@ int lit_change_drm_level(lit_file * litf
     }
     if ((litfile->drmlevel == 5) || (litfile->drmlevel == 0)) {
         /* Need a new bookkey */
-        random_data(new_key, 8);
+        if (random_data(new_key, 8)) {
+            return E_LIT_URANDOM;
+	}
         for (i = 1; i < litfile->num_sections; i++) {
             status = lit_i_encrypt_section(litfile,litfile->sections[i].name,
                 &new_key[0]);
@@ -374,15 +377,21 @@ int calculate_deskey(lit_file * litfile,
 /*--[random_data]--------------------------------------------------------------
  |
  | Random data for creating book key's.
- | FUTUREFIX - This is very non-random.
 */
-void random_data(U8 * pData, int length)
+int random_data(U8 * pData, int length)
 {
-    int i, r;
+    FILE *ura;
+    int ret;
 
-    srand(time(NULL));
-    for (i = 0; i < length; i++) {
-        r = rand() ^ (rand() >> 7);
-        pData[i] = (r & 0xff); 
-    } 
+    if (length <= 0) return 0;
+    ura = fopen("/dev/urandom", "r");
+    if (ura == NULL)
+      ura = fopen("/dev/random", "r");
+    if (ura == NULL)
+      return -1;
+    setbuf(ura, NULL);
+    ret = fread(pData, 1, length, ura);
+    fclose(ura);
+    return length != ret;
 }
+
--- clit18/lib/litlib.h.bak	2004-05-15 21:56:12.000000000 +0300
+++ clit18/lib/litlib.h	2007-09-09 20:20:48.938108236 +0300
@@ -210,6 +210,7 @@ typedef struct lit_file
 #define E_LIT_WRITE_ERROR       -2012
 
 #define E_LIT_FILE_NOT_FOUND    -2030
+#define E_LIT_URANDOM           -2040
 
 #define E_LIT_FORMAT_ERROR      -2100
 #define E_LIT_NEWER_VERSION     -2110