Fixes to reflect comments

- Rename `decodeExtensions` to `decodeAuthenticatorExtensions`
- Mention authenticator extension
- Include decoding in `parseAuthenticatorData`
- Add tests for `decodeAuthenticatorExtensions`

1 files changed, 27 insertions, 0 deletions

diff --git a/packages/server/src/helpers/decodeAuthenticatorExtensions.test.ts b/packages/server/src/helpers/decodeAuthenticatorExtensions.test.ts
new file mode 100644
index 0000000..b6af487
--- /dev/null
+++ b/packages/server/src/helpers/decodeAuthenticatorExtensions.test.ts
@@ -0,0 +1,27 @@
+import decodeAuthenticatorExtensionData from "./decodeAuthenticatorExtensions";
+
+test('should decode authenticator extensions', () => {
+  const extensions = decodeAuthenticatorExtensionData(Buffer.from(
+    'A16F6465766963655075626C69634B6579A56364706B584DA5010203262001215820991A' +
+    'ABED9DE4271A9EDEAD8806F9DC96D6DCCD0C476253A5510489EC8379BE5B225820A0973C' +
+    'FDEDBB79E27FEF4EE7481673FB3312504DDCA5434CFD23431D6AD29EDA63736967584730' +
+    '45022100EFB38074BD15B8C82CF09F87FBC6FB3C7169EA4F1806B7E90937374302345B7A' +
+    '02202B7113040731A0E727D338D48542863CE65880AA79E5EA740AC8CCD94347988E656E' +
+    '6F6E6365406573636F706541006661616775696450000000000000000000000000000000' +
+    '00', 'hex'
+  ));
+  expect(extensions).toMatchObject({
+    "devicePublicKey": {
+      "dpk": Buffer.from('A5010203262001215820991AABED9DE4271A9EDEAD8806F9DC96D6DCCD0C476253A5510489EC8379BE5B225820A0973CFDEDBB79E27FEF4EE7481673FB3312504DDCA5434CFD23431D6AD29EDA', 'hex'),
+      "sig": Buffer.from('3045022100EFB38074BD15B8C82CF09F87FBC6FB3C7169EA4F1806B7E90937374302345B7A02202B7113040731A0E727D338D48542863CE65880AA79E5EA740AC8CCD94347988E', 'hex'),
+      "nonce": Buffer.from('', 'hex'),
+      "scope": Buffer.from('00', 'hex'),
+      "aaguid": Buffer.from('00000000000000000000000000000000', 'hex')
+    }
+  })
+});
+
+test('should return undefined decoding authenticator extensions', () => {
+  const extensions = decodeAuthenticatorExtensionData(Buffer.from('A16F'));
+  expect(extensions).toEqual(undefined);
+});