From 4a78ca6c05049380c42394ca77cea7b9c9a1e73d Mon Sep 17 00:00:00 2001
From: adityankannan-tw <adityan410pm@gmail.com>
Date: Wed, 18 Dec 2024 18:01:36 +0530
Subject: [PATCH] [INJIMOB-2550]: encode ed25519 public key and pass to library

Signed-off-by: adityankannan-tw <adityan410pm@gmail.com>
---
 machines/openID4VP/openID4VPServices.ts | 3 ++-
 shared/openID4VP/OpenID4VP.ts           | 9 +++++----
 2 files changed, 7 insertions(+), 5 deletions(-)

diff --git a/machines/openID4VP/openID4VPServices.ts b/machines/openID4VP/openID4VPServices.ts
index 8234880e9..730d8aba9 100644
--- a/machines/openID4VP/openID4VPServices.ts
+++ b/machines/openID4VP/openID4VPServices.ts
@@ -1,6 +1,7 @@
 import {CACHED_API} from '../../shared/api';
 import {fetchKeyPair} from '../../shared/cryptoutil/cryptoUtil';
 import {hasKeyPair} from '../../shared/openId4VCI/Utils';
+import base64url from 'base64url';
 import {
   constructProofJWT,
   isClientValidationRequired,
@@ -53,7 +54,7 @@ export const openID4VPServices = () => {
       const vpResponseMetadata = {
         jws: proofJWT,
         signatureAlgorithm: OpenID4VP_Proof_Algo_Type,
-        publicKey: context.publicKey,
+        publicKey: base64url(context.publicKey),
         domain: OpenID4VP_Domain,
       };
       return await OpenID4VP.shareVerifiablePresentation(vpResponseMetadata);
diff --git a/shared/openID4VP/OpenID4VP.ts b/shared/openID4VP/OpenID4VP.ts
index 6005d3eb4..033062395 100644
--- a/shared/openID4VP/OpenID4VP.ts
+++ b/shared/openID4VP/OpenID4VP.ts
@@ -6,8 +6,9 @@ import {getJWK} from '../openId4VCI/Utils';
 import getAllConfigurations from '../api';
 
 export const OpenID4VP_Key_Ref = 'OpenID4VP_KeyPair';
-export const OpenID4VP_Proof_Algo_Type = 'RsaSignature2018';
+export const OpenID4VP_Proof_Algo_Type = 'Ed25519Signature2018';
 export const OpenID4VP_Domain = 'OpenID4VP';
+export const OpenID4VP_Proof_Algo = 'EdDSA';
 
 export class OpenID4VP {
   static InjiOpenID4VP = NativeModules.InjiOpenID4VP;
@@ -62,13 +63,13 @@ export class OpenID4VP {
 }
 
 export async function constructProofJWT(
-  publicKey: string,
-  privateKey: string,
+  publicKey: any,
+  privateKey: any,
   vpToken: Object,
   keyType: string,
 ): Promise<string> {
   const jwtHeader = {
-    alg: keyType,
+    alg: OpenID4VP_Proof_Algo,
     jwk: await getJWK(publicKey, keyType),
   };