From 8d221c9ba3d2f777eebe290ee3ffd58acda22637 Mon Sep 17 00:00:00 2001
From: Andrew Jones <ajones@digitalbazaar.com>
Date: Sat, 6 May 2023 14:29:35 -0400
Subject: [PATCH] Add unique key pair test for ed25519.

---
 tests/unit/ed25519.js | 16 +++++++++++++++-
 1 file changed, 15 insertions(+), 1 deletion(-)

diff --git a/tests/unit/ed25519.js b/tests/unit/ed25519.js
index a7af3ddac..40381bfec 100644
--- a/tests/unit/ed25519.js
+++ b/tests/unit/ed25519.js
@@ -30,7 +30,21 @@ var UTIL = require('../../lib/util');
       ASSERT.equal(privateKey, b64PrivateKey);
       ASSERT.equal(publicKey, b64PublicKey);
     });
-
+    it('should generate a unique key pair for each seed', function() {
+        let _pwd = 'password';
+        let md = SHA256.create();
+        md.update(_pwd, 'utf8');
+        let seed = md.digest().getBytes();
+        let kp = ED25519.generateKeyPair({seed: seed});
+
+        md = SHA256.create();
+        md.update(_pwd + '!', 'utf8');  // << different password
+        let seed2 = md.digest().getBytes();
+        let kp2 = ED25519.generateKeyPair({ seed: seed2 });
+        ASSERT.notEqual(seed, seed2);
+        ASSERT.notEqual(kp.privateKey, kp2.privateKey);
+        ASSERT.notEqual(kp.publicKey, kp2.publicKey);
+    });
     it('should get a public key from a private key', function() {
       var privateKey = db64(b64PrivateKey);
       var publicKey = ED25519.publicKeyFromPrivateKey({