Index: base/rand_util_nacl.cc |
diff --git a/base/rand_util_nacl.cc b/base/rand_util_nacl.cc |
new file mode 100644 |
index 0000000000000000000000000000000000000000..47450aaba68be254001da2f5e9d84e182b19ed76 |
--- /dev/null |
+++ b/base/rand_util_nacl.cc |
@@ -0,0 +1,53 @@ |
+// Copyright (c) 2012 The Chromium Authors. All rights reserved. |
+// Use of this source code is governed by a BSD-style license that can be |
+// found in the LICENSE file. |
+ |
+#include "base/rand_util.h" |
+ |
+#include "base/basictypes.h" |
+#include "base/lazy_instance.h" |
+#include "base/logging.h" |
+#include "native_client/src/untrusted/irt/irt.h" |
+ |
+namespace { |
+ |
+class NaclRandom { |
+ public: |
+ NaclRandom() { |
+ size_t result = nacl_interface_query(NACL_IRT_RANDOM_v0_1, |
+ &random_, sizeof(random_)); |
+ CHECK_EQ(result, sizeof(random_)); |
+ } |
+ |
+ ~NaclRandom() { |
+ } |
+ |
+ void GetRandomBytes(char* buffer, uint32_t num_bytes) { |
+ while (num_bytes > 0) { |
+ size_t nread; |
+ int error = random_.get_random_bytes(buffer, num_bytes, &nread); |
+ CHECK_EQ(error, 0); |
+ CHECK_LE(nread, num_bytes); |
+ buffer += nread; |
+ num_bytes -= nread; |
+ } |
+ } |
+ |
+ private: |
+ nacl_irt_random random_; |
+}; |
+ |
+base::LazyInstance<NaclRandom>::Leaky g_nacl_random = LAZY_INSTANCE_INITIALIZER; |
+ |
+} // namespace |
+ |
+namespace base { |
+ |
+uint64 RandUint64() { |
+ uint64 result; |
+ g_nacl_random.Pointer()->GetRandomBytes( |
+ reinterpret_cast<char*>(&result), sizeof(result)); |
+ return result; |
+} |
+ |
+} // namespace base |