Use blake2b instead of blake2AsU8a

Author: raymondkfcheung

.snippets/code/develop/interoperability/xcm-observability/forward-id-for.ts

@@ -1,22 +1,22 @@
-import {blake2AsU8a} from "@polkadot/util-crypto";
-import {hexToU8a, stringToU8a, u8aConcat, u8aToHex} from "@polkadot/util";
+import {blake2b} from "@noble/hashes/blake2";
+import {fromHex, mergeUint8, toHex} from "@polkadot-api/utils";
+import {Binary} from "polkadot-api";
 
 function forwardIdFor(originalMessageId: string): string {
     // Decode the hex original_id into bytes
-    const messageIdBytes = hexToU8a(originalMessageId);
+    const messageIdBytes = fromHex(originalMessageId);
 
     // Create prefixed input: b"forward_id_for" + original_id
-    const prefix = stringToU8a("forward_id_for");
-    const input = u8aConcat(prefix, messageIdBytes);
-
-    // Hash it using blake2_256
-    const forwardedIdBytes = blake2AsU8a(input);
+    const prefix = Binary.fromText("forward_id_for").asBytes();
+    const input = mergeUint8([prefix, messageIdBytes]);
 
+    // Hash it using blake2b with 32-byte output
+    const forwardedIdBytes = blake2b(input, {dkLen: 32});
     // Convert to hex
-    return u8aToHex(forwardedIdBytes);
+    return toHex(forwardedIdBytes);
 }
 
-// Example: Forwarded ID from a original_id
+// Example: Forwarded ID from an original_id
 const originalMessageId = "0x5c082b4750ee8c34986eb22ce6e345bad2360f3682cda3e99de94b0d9970cb3e";
 
 // Create the forwarded ID

llms.txt

@@ -89,7 +89,7 @@
 - [Storage](https://raw.githubusercontent.com/polkadot-developers/polkadot-docs/refs/heads/master/develop/toolkit/integrations/storage.md): Explore decentralized storage solutions for your Polkadot dApp. Discover key integrations, such as Crust and IPFS, for robust, censorship-resistant data storage.
 - [Transaction Construction](https://raw.githubusercontent.com/polkadot-developers/polkadot-docs/refs/heads/master/develop/toolkit/integrations/transaction-construction.md): Understand how to construct, sign, and broadcast transactions in the Polkadot ecosystem using various tools and libraries.
 - [Wallets](https://raw.githubusercontent.com/polkadot-developers/polkadot-docs/refs/heads/master/develop/toolkit/integrations/wallets.md): Explore blockchain wallets. Securely manage digital assets with hot wallets for online access or cold wallets for offline, enhanced security.
-- [Interoperability](https://raw.githubusercontent.com/polkadot-developers/polkadot-docs/refs/heads/master/develop/toolkit/interoperability/index.md): Explore Polkadot's XCM tooling ecosystem, featuring the Asset Transfer API and other utilities for implementing cross-chain messaging and transfers.
+- [Interoperability](https://raw.githubusercontent.com/polkadot-developers/polkadot-docs/refs/heads/master/develop/toolkit/interoperability/index.md): Explore Polkadot's XCM tooling ecosystem, featuring utilities for implementing cross-chain messaging and transfers.
 - [ParaSpell XCM SDK](https://raw.githubusercontent.com/polkadot-developers/polkadot-docs/refs/heads/master/develop/toolkit/interoperability/paraspell-xcm-sdk/index.md): A powerful open-source library that simplifies XCM integration, enabling developers to easily build interoperable dApps on Polkadot.
 - [XCM Tools](https://raw.githubusercontent.com/polkadot-developers/polkadot-docs/refs/heads/master/develop/toolkit/interoperability/xcm-tools.md): Explore essential XCM tools across Polkadot, crafted to enhance cross-chain functionality and integration within the ecosystem.
 - [E2E Testing on Polkadot SDK Chains](https://raw.githubusercontent.com/polkadot-developers/polkadot-docs/refs/heads/master/develop/toolkit/parachains/e2e-testing/index.md): Discover a suite of tools for E2E testing on Polkadot SDK-based blockchains, including configuration management, automation, and debugging utilities.

tutorials/interoperability/xcm-observability-in-action.md

@@ -86,7 +86,8 @@ If you're new to replay or dry-run XCMs, see [Replay and Dry Run XCMs Using Chop
 
     ```bash
     npm install --save-dev typescript @types/node tsx
-    npm install polkadot-api @polkadot-labs/hdkd @polkadot-labs/hdkd-helpers
+    npm install  polkadot-api @polkadot-labs/hdkd @polkadot-labs/hdkd-helpers
+    npm install @noble/hashes
     ```
 
 9. Initialise TypeScript: