Day 10: Build a Developer Debug View for Canonical XML, Hashes, and Signature #irbdebug

To troubleshoot IRBM submission issues like DS320, DS322, or DS333, you need a dedicated debug view that shows all key components of your digital signature process in one place.

✅ Why this is important:

• ✅ Easily verify canonical XML structure
• ✅ Confirm all digest values and base64 encodings
• ✅ Debug signatureValue mismatches faster

✅ Suggested Debug View Blade:

<h2>IRBM Signature Debug for Invoice #{{ $invoice->invoice_no }}</h2>

<h4>Canonicalized XML (Signed)</h4>
<textarea rows="10" class="form-control" readonly>{{ $invoice->debug_signed_xml }}</textarea>

<h4>SHA256 Digest (SignedProperties)</h4>
<pre>{{ $invoice->debug_digest_signed_properties }}</pre>

<h4>SHA256 Digest (Full Invoice)</h4>
<pre>{{ $invoice->debug_digest_invoice }}</pre>

<h4>Final SignatureValue (Base64)</h4>
<pre>{{ $invoice->debug_signature_value }}</pre>

✅ Suggested Columns to Store (if using JSON):

• debug_signed_xml
• debug_digest_signed_properties
• debug_digest_invoice
• debug_signature_value

💡 Tips:

• Show md5() and sha256() values together for faster comparisons
• Group by block: UBLExtensions, SignedInfo, KeyInfo
• Export full debug log as .txt for sharing with IRBM support

🎉 Congrats! You’ve now implemented a robust, compliant, and developer-friendly IRBM e-Invoicing system in Laravel with audit tracking, retry logic, and QR code integration.