From: Chris Duncan <chris@zoso.dev>
Date: Sun, 3 Aug 2025 07:27:06 +0000 (-0700)
Subject: Subarray to eliminate a copy.
X-Git-Tag: v0.10.5~46^2~34
X-Git-Url: https://git.codecow.com/?a=commitdiff_plain;h=10e79d4a22487324352e1652be41fb7b786cde69;p=libnemo.git

Subarray to eliminate a copy.
---

diff --git a/src/lib/nano-nacl.ts b/src/lib/nano-nacl.ts
index 51efcb4..52c6abd 100644
--- a/src/lib/nano-nacl.ts
+++ b/src/lib/nano-nacl.ts
@@ -78,7 +78,7 @@ export class NanoNaCl {
 		let b: number
 		const m: Float64Array = this.gf()
 		const t: Float64Array = this.gf()
-		t.set(n.slice(0, 16), 0)
+		t.set(n.subarray(0, 16), 0)
 		this.car25519(t)
 		this.car25519(t)
 		this.car25519(t)
@@ -177,7 +177,7 @@ export class NanoNaCl {
 
 	static inv25519 (o: Float64Array, i: Float64Array): void {
 		const c: Float64Array = new Float64Array(16)
-		c.set(i.slice(0, 16), 0)
+		c.set(i.subarray(0, 16), 0)
 		for (let a = 253; a >= 0; a--) {
 			this.S(c, c)
 			if (a !== 2 && a !== 4) {
@@ -189,7 +189,7 @@ export class NanoNaCl {
 
 	static pow2523 (o: Float64Array, i: Float64Array): void {
 		const c: Float64Array = this.gf()
-		c.set(i.slice(0, 16), 0)
+		c.set(i.subarray(0, 16), 0)
 		for (let a = 250; a >= 0; a--) {
 			this.S(c, c)
 			if (a !== 1) {
@@ -307,7 +307,7 @@ export class NanoNaCl {
 
 	static reduce (r: Uint8Array): void {
 		let x = new Float64Array(64)
-		x.set(r.slice(0, 64), 0)
+		x.set(r.subarray(0, 64), 0)
 		r.fill(0, 0, 64)
 		this.modL(r, x)
 	}
@@ -397,8 +397,8 @@ export class NanoNaCl {
 
 		if (this.unpackneg(q, pk)) return -1
 
-		m.set(sm.slice(0, n), 0)
-		m.set(pk.slice(0, 32), 32)
+		m.set(sm.subarray(0, n), 0)
+		m.set(pk.subarray(0, 32), 32)
 		const h = new Blake2b(64).update(m).digest()
 		this.reduce(h)
 		this.scalarmult(p, q, h)
@@ -412,7 +412,7 @@ export class NanoNaCl {
 			m.fill(0, 0, n)
 			return -1
 		}
-		m.set(sm.slice(64, n + 64), 0)
+		m.set(sm.subarray(64, n + 64), 0)
 		return n
 	}