From b4537c39126a3dbed9fbe5e843b5d9a050acdad6 Mon Sep 17 00:00:00 2001
From: Justus Winter <justus@sequoia-pgp.org>
Date: Mon, 24 Feb 2020 17:49:19 +0100
Subject: openpgp: De-optimize crypto::random.

  - Previously, we used a thread-local cache of the Yarrow CPRNG
    state.  However, without fork(2)-detection this is not safe.  For
    now, just initialize a fresh one on every invocation.
---
 openpgp/src/crypto/mod.rs | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

(limited to 'openpgp/src/crypto/mod.rs')

diff --git a/openpgp/src/crypto/mod.rs b/openpgp/src/crypto/mod.rs
index 9b338f13..c93b3625 100644
--- a/openpgp/src/crypto/mod.rs
+++ b/openpgp/src/crypto/mod.rs
@@ -30,9 +30,7 @@ pub use self::asymmetric::{
 
 /// Fills the given buffer with random data.
 pub fn random<B: AsMut<[u8]>>(mut buf: B) {
-    use std::cell::RefCell;
-    thread_local!(static RNG: RefCell<Yarrow> = Default::default());
-    RNG.with(|rng| rng.borrow_mut().random(buf.as_mut()));
+    Yarrow::default().random(buf.as_mut());
 }
 
 /// Holds a session key.
-- 
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