From 7bebcc9d30fdf0810849f6fdaf0905b682e5ada4 Mon Sep 17 00:00:00 2001
From: Felicio Mununga <felicio@users.noreply.github.com>
Date: Fri, 3 Jun 2022 23:36:36 +0200
Subject: [PATCH] add payload-to-id.ts

---
 packages/status-js/src/utils/payload-to-id.ts | 12 ++++++++++++
 1 file changed, 12 insertions(+)
 create mode 100644 packages/status-js/src/utils/payload-to-id.ts

diff --git a/packages/status-js/src/utils/payload-to-id.ts b/packages/status-js/src/utils/payload-to-id.ts
new file mode 100644
index 00000000..9db98a21
--- /dev/null
+++ b/packages/status-js/src/utils/payload-to-id.ts
@@ -0,0 +1,12 @@
+import { keccak256 } from 'ethereum-cryptography/keccak'
+import { bytesToHex } from 'ethereum-cryptography/utils'
+
+export function payloadToId(
+  publicKey: Uint8Array,
+  payload: Uint8Array
+): string {
+  const hash = keccak256(new Uint8Array([...publicKey, ...payload]))
+  const hex = bytesToHex(hash)
+
+  return `0x${hex}`
+}