From dc1c5806c9e8cbe314149259d741d8fb7098e193 Mon Sep 17 00:00:00 2001
From: Sun Yimin <emmansun@users.noreply.github.com>
Date: Wed, 26 Feb 2025 10:50:35 +0800
Subject: [PATCH] internal/bigmod: use clear()

---
 ecdh/ecdh_test.go      |  4 +---
 internal/bigmod/nat.go | 10 ++--------
 2 files changed, 3 insertions(+), 11 deletions(-)

diff --git a/ecdh/ecdh_test.go b/ecdh/ecdh_test.go
index bf348ab..85f4ff8 100644
--- a/ecdh/ecdh_test.go
+++ b/ecdh/ecdh_test.go
@@ -374,9 +374,7 @@ type zr struct{}
 
 // Read replaces the contents of dst with zeros. It is safe for concurrent use.
 func (zr) Read(dst []byte) (n int, err error) {
-	for i := range dst {
-		dst[i] = 0
-	}
+	clear(dst)
 	return len(dst), nil
 }
 
diff --git a/internal/bigmod/nat.go b/internal/bigmod/nat.go
index 6cd801e..128a40c 100644
--- a/internal/bigmod/nat.go
+++ b/internal/bigmod/nat.go
@@ -85,10 +85,7 @@ func (x *Nat) expand(n int) *Nat {
 		return x
 	}
 	extraLimbs := x.limbs[len(x.limbs):n]
-	// clear(extraLimbs)
-	for i := range extraLimbs {
-		extraLimbs[i] = 0
-	}
+	clear(extraLimbs)
 	x.limbs = x.limbs[:n]
 	return x
 }
@@ -99,10 +96,7 @@ func (x *Nat) reset(n int) *Nat {
 		x.limbs = make([]uint, n)
 		return x
 	}
-	// clear(x.limbs)
-	for i := range x.limbs {
-		x.limbs[i] = 0
-	}
+	clear(x.limbs)
 	x.limbs = x.limbs[:n]
 	return x
 }