Fix illegal invocation of getRandomValues (#257)

uuidjs · Jan 16, 2018 · 262a8ea · 262a8ea
1 parent c0d44fd
commit 262a8ea
Showing 1 changed file with 3 additions and 2 deletions.
diff --git a/lib/rng-browser.js b/lib/rng-browser.js
@@ -3,8 +3,9 @@
 // and inconsistent support for the `crypto` API.  We do the best we can via
 // feature-detection
 
-var getRandomValues = (typeof(crypto) != 'undefined' && crypto.getRandomValues) ||
-                      (typeof(msCrypto) != 'undefined' && msCrypto.getRandomValues);
+// getRandomValues needs to be invoked in a context where "this" is a Crypto implementation.
+var getRandomValues = (typeof(crypto) != 'undefined' && crypto.getRandomValues.bind(crypto)) ||
+                      (typeof(msCrypto) != 'undefined' && msCrypto.getRandomValues.bind(msCrypto));
 if (getRandomValues) {
   // WHATWG crypto RNG - http://wiki.whatwg.org/wiki/Crypto
   var rnds8 = new Uint8Array(16); // eslint-disable-line no-undef