From e5f0187693cb1521eb7f032adac2ca1005d4e406 Mon Sep 17 00:00:00 2001
From: Matthew Miller <matthew@millerti.me>
Date: Fri, 11 Nov 2022 15:50:45 -0800
Subject: Refactor more to handle CBOR maps

---
 .../server/src/helpers/decodeAttestationObject.ts  | 27 +++++++++++-----------
 1 file changed, 13 insertions(+), 14 deletions(-)

(limited to 'packages/server/src/helpers/decodeAttestationObject.ts')

diff --git a/packages/server/src/helpers/decodeAttestationObject.ts b/packages/server/src/helpers/decodeAttestationObject.ts
index bab6ced..9d08e33 100644
--- a/packages/server/src/helpers/decodeAttestationObject.ts
+++ b/packages/server/src/helpers/decodeAttestationObject.ts
@@ -1,13 +1,12 @@
-import { decodeCborFirst } from './decodeCbor';
+import * as cbor from './cbor';
 
 /**
  * Convert an AttestationObject buffer to a proper object
  *
  * @param base64AttestationObject Attestation Object buffer
  */
-export function decodeAttestationObject(attestationObject: Buffer): AttestationObject {
-  const toCBOR: AttestationObject = decodeCborFirst(attestationObject);
-  return toCBOR;
+export function decodeAttestationObject(attestationObject: Uint8Array): AttestationObject {
+  return cbor.decodeFirst<AttestationObject>(attestationObject);
 }
 
 export type AttestationFormat =
@@ -20,17 +19,17 @@ export type AttestationFormat =
   | 'none';
 
 export type AttestationObject = {
-  fmt: AttestationFormat;
-  attStmt: AttestationStatement;
-  authData: Buffer;
+  get(key: 'fmt'): AttestationFormat;
+  get(key: 'attStmt'): AttestationStatement;
+  get(key: 'authData'): Uint8Array;
 };
 
 export type AttestationStatement = {
-  sig?: Buffer;
-  x5c?: Buffer[];
-  response?: Buffer;
-  alg?: number;
-  ver?: string;
-  certInfo?: Buffer;
-  pubArea?: Buffer;
+  get(key: 'sig'): Uint8Array | undefined;
+  get(key: 'x5c'): Uint8Array[] | undefined;
+  get(key: 'response'): Uint8Array | undefined;
+  get(key: 'alg'): number | undefined;
+  get(key: 'ver'): string | undefined;
+  get(key: 'certInfo'): Uint8Array | undefined;
+  get(key: 'pubArea'): Uint8Array | undefined;
 };
-- 
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