From dbda6608e17f8366fecfc8027fa1cb4213100c8b Mon Sep 17 00:00:00 2001
From: Hans Larsen <hans@larsen.online>
Date: Mon, 12 Apr 2021 08:36:17 -0700
Subject: [PATCH] chore: remove unused function (#355)

Fixes #259
---
 .../src/identity/ed25519.test.ts              | 32 -------------------
 .../authentication/src/identity/ed25519.ts    | 20 ------------
 2 files changed, 52 deletions(-)

diff --git a/packages/authentication/src/identity/ed25519.test.ts b/packages/authentication/src/identity/ed25519.test.ts
index e568f5fe..857d26a4 100644
--- a/packages/authentication/src/identity/ed25519.test.ts
+++ b/packages/authentication/src/identity/ed25519.test.ts
@@ -71,38 +71,6 @@ test('DER decoding of invalid keys', async () => {
   }).toThrow();
 });
 
-// Test vectors consist of [hex seed, private key, public key], taken from
-// https://github.com/satoshilabs/slips/blob/master/slip-0010.md
-const testVectorsSLIP10 = [
-  [
-    '000102030405060708090a0b0c0d0e0f',
-    '2b4be7f19ee27bbf30c667b642d5f4aa69fd169872f8fc3059c08ebae2eb19e7',
-    '00a4b2856bfec510abab89753fac1ac0e1112364e7d250545963f135f2a33188ed',
-  ],
-  [
-    'fffcf9f6f3f0edeae7e4e1dedbd8d5d2cfccc9c6c3c0bdbab7b4b1aeaba8a5a29f9c999693908d8a8784817e' +
-      '7b7875726f6c696663605d5a5754514e4b484542',
-    '171cb88b1b3c1db25add599712e36245d75bc65a1a5c9e18d76f9f2b1eab4012',
-    '008fe9693f8fa62a4305a140b9764c5ee01e455963744fe18204b4fb948249308a',
-  ],
-];
-
-test('derive Ed25519 via SLIP 0010', async () => {
-  await Promise.all(
-    testVectorsSLIP10.map(([seed, privateKey, publicKey]) => {
-      const expectedPrivateKey = blobFromHex(privateKey);
-      // The SLIP 0010 test vectors contain a leading 0-byte for now obvious reason, the remainder
-      // makes sense.
-      const expectedPublicKey = blobFromHex(publicKey).slice(1, 33);
-      return Ed25519KeyIdentity.fromSeedWithSlip0010(blobFromHex(seed)).then(identity => {
-        const keyPair = identity.getKeyPair();
-        expect(keyPair.secretKey.slice(0, 32)).toEqual(expectedPrivateKey);
-        expect(Ed25519PublicKey.from(keyPair.publicKey).toRaw()).toEqual(expectedPublicKey);
-      });
-    }),
-  );
-});
-
 test('can encode and decode to/from JSON', async () => {
   const seed = new Array(32).fill(0);
   const key = Ed25519KeyIdentity.generate(new Uint8Array(seed));
diff --git a/packages/authentication/src/identity/ed25519.ts b/packages/authentication/src/identity/ed25519.ts
index 6199122e..c3ad9b31 100644
--- a/packages/authentication/src/identity/ed25519.ts
+++ b/packages/authentication/src/identity/ed25519.ts
@@ -106,26 +106,6 @@ export class Ed25519KeyIdentity extends SignIdentity {
     );
   }
 
-  // Derive an Ed25519 key pair according to SLIP 0010:
-  // https://github.com/satoshilabs/slips/blob/master/slip-0010.md
-  public static async fromSeedWithSlip0010(seed: Uint8Array): Promise<Ed25519KeyIdentity> {
-    const encoder = new TextEncoder();
-    const rawKey = encoder.encode('ed25519 seed');
-    const key = await window.crypto.subtle.importKey(
-      'raw',
-      rawKey,
-      {
-        name: 'HMAC',
-        hash: { name: 'SHA-512' },
-      },
-      false,
-      ['sign'],
-    );
-    const result = await window.crypto.subtle.sign('HMAC', key, seed.buffer);
-    const slipSeed = new Uint8Array(result.slice(0, 32));
-    return this.generate(slipSeed);
-  }
-
   public static fromParsedJson(obj: JsonnableEd25519KeyIdentity): Ed25519KeyIdentity {
     const [publicKeyDer, privateKeyRaw] = obj;
     return new Ed25519KeyIdentity(