From 409b3a70adab4211d2cf4c996a01b3aa6d74bd21 Mon Sep 17 00:00:00 2001
From: Frank Denis <github@pureftpd.org>
Date: Wed, 23 Oct 2024 18:54:54 +0200
Subject: [PATCH] More optblocker usage

---
 src/libsodium/crypto_core/ed25519/ref10/ed25519_ref10.c | 7 ++-----
 1 file changed, 2 insertions(+), 5 deletions(-)

diff --git a/src/libsodium/crypto_core/ed25519/ref10/ed25519_ref10.c b/src/libsodium/crypto_core/ed25519/ref10/ed25519_ref10.c
index 9577e30a64..04b734799b 100644
--- a/src/libsodium/crypto_core/ed25519/ref10/ed25519_ref10.c
+++ b/src/libsodium/crypto_core/ed25519/ref10/ed25519_ref10.c
@@ -574,12 +574,9 @@ equal(signed char b, signed char c)
 static unsigned char
 negative(signed char b)
 {
-    /* 18446744073709551361..18446744073709551615: yes; 0..255: no */
-    uint64_t x = b;
+    const uint8_t x = (uint8_t) b; /* 0..127: no 128..255: yes */
 
-    x >>= 63; /* 1: yes; 0: no */
-
-    return x;
+    return ((x >> 5) ^ optblocker_u8) >> 2; /* 1: yes; 0: no */
 }
 
 static void