Merge pull request #18 from auth0-lab/readme_updates

docs: show samples for OID4VP only

README.md

@@ -36,8 +36,6 @@ import fs from "node:fs";
 
 ## Getting diagnostic information
 
-
-
 ```javascript
 import { Verifier } from "@auth0/mdl";
 import { inspect } from "node:util";
@@ -65,7 +63,6 @@ import fs from "node:fs";
 ```js
 import { MDoc, Document } from "@auth0/mdl";
 import { inspect } from "node:util";
-import fs from "node:fs";
 
 (async () => {
   const document = await new Document('org.iso.18013.5.1.mDL')
@@ -93,8 +90,7 @@ import fs from "node:fs";
 ## Generating a device response
 
 ```js
-import { DeviceResponse, DataItem, MDoc, DataItem, cborEncode} from '@auth0/mdl';
-import { createHash } from 'node:crypto';
+import { DeviceResponse, MDoc } from '@auth0/mdl';
 
 (async () => {
   let issuerMDoc;
@@ -107,6 +103,7 @@ import { createHash } from 'node:crypto';
     let issuerPrivateKey;
     let issuerCertificate;
     let devicePublicKey; // the public key for the device, as a JWK
+
     const document = await new Document('org.iso.18013.5.1.mDL')
       .addIssuerNameSpace('org.iso.18013.5.1', {
         family_name: 'Jones',
@@ -123,6 +120,7 @@ import { createHash } from 'node:crypto';
         issuerCertificate,
         alg: 'ES256',
       });
+
     issuerMDoc = new MDoc([document]).encode();
   }
 
@@ -131,8 +129,10 @@ import { createHash } from 'node:crypto';
    */
   {
     let devicePrivateKey; // the private key for the device, as a JWK
+
+    // Parameters coming from the OID4VP transaction
+    let mdocGeneratedNonce, clientId, responseUri, verifierGeneratedNonce;
     let presentationDefinition = {
-      // the presentation definition we create a response for
       id: 'family_name_only',
       input_descriptors: [
         {
@@ -149,42 +149,11 @@ import { createHash } from 'node:crypto';
       ],
     };
 
-    /** ... using a OID4VP handover: */
-    {
-      // Parameters coming from the OID4VP transaction
-      let mdocGeneratedNonce, clientId, responseUri, verifierGeneratedNonce;
-
-      deviceResponseMDoc = await DeviceResponse.from(issuerMDoc)
-        .usingPresentationDefinition(presentationDefinition)
-        .usingSessionTranscriptForOID4VP(mdocGeneratedNonce, clientId, responseUri, verifierGeneratedNonce)
-        .authenticateWithSignature(devicePrivateKey, 'ES256')
-        .sign();
-    }
-
-    /** ... OR ALTERNATIVELY using an "Annex A" transcript: */
-    {
-      let encodedReaderEngagement; // CBOR as received from the reader
-      let encodedDeviceEngagement; // CBOR as sent to the reader
-      let encodedReaderPublicKey;  // as found in the ReaderEngagement
-
-      const engagementToApp = Buffer.from(
-        createHash('sha256').update(encodedReaderEngagement).digest('hex'),
-        'hex',
-      );
-      const sessionTranscriptBytes = cborEncode(
-        DataItem.fromData([
-          new DataItem({ buffer: encodedDeviceEngagement }),
-          new DataItem({ buffer: encodedReaderPublicKey }),
-          engagementToApp,
-        ]),
-      );
-
-      deviceResponseMDoc = await DeviceResponse.from(issuerMDoc)
-        .usingPresentationDefinition(presentationDefinition)
-        .usingSessionTranscriptForWebAPI(encodedDeviceEngagement, encodedReaderEngagement, encodedReaderPublicKey)
-        .authenticateWithSignature(devicePrivateKey, 'ES256')
-        .sign();
-    }
+    deviceResponseMDoc = await DeviceResponse.from(issuerMDoc)
+      .usingPresentationDefinition(presentationDefinition)
+      .usingSessionTranscriptForOID4VP(mdocGeneratedNonce, clientId, responseUri, verifierGeneratedNonce)
+      .authenticateWithSignature(devicePrivateKey, 'ES256')
+      .sign();
   }
 })();
 ```