From 8b78e933ebb11ad7c88d2427a9766c090bac6eed Mon Sep 17 00:00:00 2001
From: sanderPostma <spostma@sphereon.com>
Date: Mon, 13 Jan 2025 12:46:36 +0100
Subject: [PATCH] chore: throw reason for
 VERIFIABLE_PRESENTATION_SIGNATURE_NOT_VALID

---
 .../lib/authorization-response/PresentationExchange.ts         | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/packages/siop-oid4vp/lib/authorization-response/PresentationExchange.ts b/packages/siop-oid4vp/lib/authorization-response/PresentationExchange.ts
index 66f717b2..6891bed8 100644
--- a/packages/siop-oid4vp/lib/authorization-response/PresentationExchange.ts
+++ b/packages/siop-oid4vp/lib/authorization-response/PresentationExchange.ts
@@ -397,7 +397,8 @@ export class PresentationExchange {
           try {
             verificationResult = await verifyPresentationCallback(presentation as W3CVerifiablePresentation, evaluationResults.value!)
           } catch (error: unknown) {
-            throw new Error(SIOPErrors.VERIFIABLE_PRESENTATION_SIGNATURE_NOT_VALID)
+            const errorMessage = error instanceof Error ? error.message : String(error)
+            throw new Error(`${SIOPErrors.VERIFIABLE_PRESENTATION_SIGNATURE_NOT_VALID}: ${errorMessage}`)
           }
 
           if (!verificationResult.verified) {