From f913730e4576d123950eff754403f4993c169615 Mon Sep 17 00:00:00 2001
From: Chris Duncan <chris@zoso.dev>
Date: Wed, 4 Dec 2024 06:27:17 -0800
Subject: [PATCH] Return empty byte array instead of null if there are issues
 opening a signed message. Return detached signature as uppercase hex so
 calling function can ingest it more easily.

---
 src/lib/nano-nacl.ts | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/src/lib/nano-nacl.ts b/src/lib/nano-nacl.ts
index d6f9fad..5f5b651 100644
--- a/src/lib/nano-nacl.ts
+++ b/src/lib/nano-nacl.ts
@@ -809,25 +809,25 @@ const n = () => {
 		return signedMsg
 	}
 
-	const open = function (signedMsg: Uint8Array, publicKey: Uint8Array): Uint8Array | null {
+	const open = function (signedMsg: Uint8Array, publicKey: Uint8Array): Uint8Array {
 		checkArrayTypes(signedMsg, publicKey)
 		if (publicKey.length !== crypto_sign_PUBLICKEYBYTES)
 			throw new Error('bad public key size')
 		const tmp = new Uint8Array(signedMsg.length)
 		var mlen = crypto_sign_open(tmp, signedMsg, signedMsg.length, publicKey)
 
-		if (mlen < 0) return null
+		if (mlen < 0) return new Uint8Array(0)
 
 		var m = new Uint8Array(mlen)
 		for (var i = 0; i < m.length; i++) m[i] = tmp[i]
 		return m
 	}
 
-	const detached = function (msg: Uint8Array, secretKey: Uint8Array): Uint8Array {
+	const detached = function (msg: Uint8Array, secretKey: Uint8Array): string {
 		var signedMsg = sign(msg, secretKey)
 		var sig = new Uint8Array(crypto_sign_BYTES)
 		for (var i = 0; i < sig.length; i++) sig[i] = signedMsg[i]
-		return sig
+		return hexify(sig).toUpperCase()
 	}
 
 	const verify = function (msg: Uint8Array, sig: Uint8Array, publicKey: Uint8Array): boolean {
-- 
2.34.1