Initial rebrand: @polkadot -> @pezkuwi (14 packages)

- Package namespace: @polkadot/* -> @pezkuwi/*
- Repository: polkadot-js/common -> pezkuwichain/pezkuwi-common
- Author: Pezkuwi Team <team@pezkuwichain.io>

Core packages:
- @pezkuwi/util (utilities)
- @pezkuwi/util-crypto (crypto primitives)
- @pezkuwi/keyring (account management)
- @pezkuwi/networks (chain metadata)
- @pezkuwi/hw-ledger (Ledger hardware wallet)
- @pezkuwi/x-* (10 polyfill packages)

Total: 14 packages
Upstream: polkadot-js/common v14.0.1

packages/util-crypto/src/blake2/asU8a.ts

@@ -0,0 +1,40 @@
+// Copyright 2017-2025 @polkadot/util-crypto authors & contributors
+// SPDX-License-Identifier: Apache-2.0
+
+import { blake2b as blake2bJs } from '@noble/hashes/blake2b';
+
+import { hasBigInt, u8aToU8a } from '@pezkuwi/util';
+import { blake2b, isReady } from '@pezkuwi/wasm-crypto';
+
+import { createAsHex } from '../helpers.js';
+
+/**
+ * @name blake2AsU8a
+ * @summary Creates a blake2b u8a from the input.
+ * @description
+ * From a `Uint8Array` input, create the blake2b and return the result as a u8a with the specified `bitLength`.
+ * @example
+ * <BR>
+ *
+ * ```javascript
+ * import { blake2AsU8a } from '@pezkuwi/util-crypto';
+ *
+ * blake2AsU8a('abc'); // => [0xba, 0x80, 0xa5, 0x3f, 0x98, 0x1c, 0x4d, 0x0d]
+ * ```
+ */
+export function blake2AsU8a (data: string | Uint8Array, bitLength: 64 | 128 | 256 | 384 | 512 = 256, key?: Uint8Array | null, onlyJs?: boolean): Uint8Array {
+  const byteLength = Math.ceil(bitLength / 8);
+  const u8a = u8aToU8a(data);
+
+  return !hasBigInt || (!onlyJs && isReady())
+    ? blake2b(u8a, u8aToU8a(key), byteLength)
+    : key
+      ? blake2bJs(u8a, { dkLen: byteLength, key })
+      : blake2bJs(u8a, { dkLen: byteLength });
+}
+
+/**
+ * @name blake2AsHex
+ * @description Creates a blake2b hex from the input.
+ */
+export const blake2AsHex = /*#__PURE__*/ createAsHex(blake2AsU8a);