From c19fb57747770677cf029723b3aa42acdf404200 Mon Sep 17 00:00:00 2001
From: jamesthompson26-nhs <james.thompson26@nhs.net>
Date: Mon, 22 Jun 2026 14:55:01 +0100
Subject: [PATCH] CCM-18334: Firehose Delivery Stream Permissions Update

---
 .../terraform/modules/eventpub/iam_role_sns.tf     | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/infrastructure/terraform/modules/eventpub/iam_role_sns.tf b/infrastructure/terraform/modules/eventpub/iam_role_sns.tf
index fa48a90e..18ef8a6c 100644
--- a/infrastructure/terraform/modules/eventpub/iam_role_sns.tf
+++ b/infrastructure/terraform/modules/eventpub/iam_role_sns.tf
@@ -49,4 +49,18 @@ data "aws_iam_policy_document" "firehose_delivery" {
       "${aws_kinesis_firehose_delivery_stream.main[0].arn}",
     ]
   }
+
+  statement {
+    sid    = "AllowKmsAccessForFirehoseDelivery"
+    effect = "Allow"
+
+    actions = [
+      "kms:GenerateDataKey",
+      "kms:Decrypt",
+    ]
+
+    resources = [
+      var.kms_key_arn,
+    ]
+  }
 }