Introduce a random entropy source which can optionally be provided at initialization.

include/v8.h

Index: include/v8.h
===================================================================
--- include/v8.h	(revision 8657)
+++ include/v8.h	(working copy)
@@ -2801,7 +2801,14 @@
   char** raw_data;
 };
 
+
 /**
+ * EntropySource is used as a callback function when v8 needs a source
+ * of cryptographically safe entropy.

[Mads Ager (chromium), 2011/07/17 08:59:12]

Let's remove the "cryptographically safe" part of this comment. There is no
requirement on the entropy source. Whether or not it is cryptographically safe
is up to the user of the API to decide.

+ */
+typedef bool (*EntropySource)(unsigned char* buffer, size_t length);
+
+/**
  * Container class for static utility functions.
  */
 class V8EXPORT V8 {
@@ -3026,6 +3033,12 @@
   static bool Initialize();
 
   /**
+   * Allows the host application to provide a callback which can be used
+   * as a source of entropy for random number generators.
+   */
+  static void SetEntropySource(EntropySource source);
+
+  /**
    * Adjusts the amount of registered external memory.  Used to give
    * V8 an indication of the amount of externally allocated memory
    * that is kept alive by JavaScript objects.  V8 uses this to decide