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-rw-r--r--src/p2p/net_peerlist.h5
1 files changed, 4 insertions, 1 deletions
diff --git a/src/p2p/net_peerlist.h b/src/p2p/net_peerlist.h
index 883997fd6..c65b9dd82 100644
--- a/src/p2p/net_peerlist.h
+++ b/src/p2p/net_peerlist.h
@@ -278,6 +278,9 @@ namespace nodetool
// was moved to the gray list (if it's not accessibe, which the attacker can check if
// the address accepts incoming connections) or it was the oldest to still fit in the 250 items,
// so its last_seen is old.
+ //
+ // See Cao, Tong et al. "Exploring the Monero Peer-to-Peer Network". https://eprint.iacr.org/2019/411
+ //
const uint32_t pick_depth = anonymize ? depth + depth / 5 : depth;
bs_head.reserve(pick_depth);
for(const peers_indexed::value_type& vl: boost::adaptors::reverse(by_time_index))
@@ -290,7 +293,7 @@ namespace nodetool
if (anonymize)
{
- std::random_shuffle(bs_head.begin(), bs_head.end());
+ std::shuffle(bs_head.begin(), bs_head.end(), crypto::random_device{});
if (bs_head.size() > depth)
bs_head.resize(depth);
for (auto &e: bs_head)