From a2195b9b7fba5da7f47903961db3fb31f6d7146c Mon Sep 17 00:00:00 2001
From: stoffu <stoffu@protonmail.ch>
Date: Wed, 3 Apr 2019 14:10:24 +0900
Subject: crypto: replace rand<T>()%N idiom with unbiased rand_idx(N)

---
 src/common/dns_utils.cpp | 7 ++-----
 1 file changed, 2 insertions(+), 5 deletions(-)

(limited to 'src/common/dns_utils.cpp')

diff --git a/src/common/dns_utils.cpp b/src/common/dns_utils.cpp
index 1a1155c7c..5e03bf897 100644
--- a/src/common/dns_utils.cpp
+++ b/src/common/dns_utils.cpp
@@ -33,7 +33,7 @@
 #include <stdlib.h>
 #include "include_base_utils.h"
 #include "common/threadpool.h"
-#include <random>
+#include "crypto/crypto.h"
 #include <boost/thread/mutex.hpp>
 #include <boost/algorithm/string/join.hpp>
 #include <boost/optional.hpp>
@@ -517,10 +517,7 @@ bool load_txt_records_from_dns(std::vector<std::string> &good_records, const std
   std::vector<std::vector<std::string> > records;
   records.resize(dns_urls.size());
 
-  std::random_device rd;
-  std::mt19937 gen(rd());
-  std::uniform_int_distribution<int> dis(0, dns_urls.size() - 1);
-  size_t first_index = dis(gen);
+  size_t first_index = crypto::rand_idx(dns_urls.size());
 
   // send all requests in parallel
   std::deque<bool> avail(dns_urls.size(), false), valid(dns_urls.size(), false);
-- 
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