From df4dc7b3836359d4249eab3b28d87986eb3b2f4f Mon Sep 17 00:00:00 2001
From: abhip2565 <paul.apaul.abhishek.AP@gmail.com>
Date: Fri, 19 Sep 2025 13:29:08 +0530
Subject: [PATCH] [INJIMOB-3546] fix es256 based kb-jwt signing for ios ovp
 (#2085)

Signed-off-by: Abhishek Paul <paul.apaul.abhishek.ap@gmail.com>
---
 machines/openID4VP/openID4VPServices.ts | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/machines/openID4VP/openID4VPServices.ts b/machines/openID4VP/openID4VPServices.ts
index c37351f5..33573af6 100644
--- a/machines/openID4VP/openID4VPServices.ts
+++ b/machines/openID4VP/openID4VPServices.ts
@@ -182,8 +182,17 @@ export const openID4VPServices = () => {
             const header = JSON.parse(atob(unsignedKBJWT.split('.')[0]));
             const alg = header.alg;
             const keyType = JWT_ALG_TO_KEY_TYPE[alg];
+
+            let privateKey: string;
+
+            if (keyType === KeyTypes.ED25519) {
+              privateKey = context.privateKey;
+            } else {
+              const keypair = await fetchKeyPair(keyType);
+              privateKey = keypair.privateKey;
+            }
             const signature = await createSignature(
-              context.privateKey,
+              privateKey,
               unsignedKBJWT,
               keyType,
             );
@@ -203,4 +212,3 @@ export const openID4VPServices = () => {
     },
   };
 };
-