First iteration of account creation. More refactoring to come

src/libs/crypto/index.ts

@@ -0,0 +1,65 @@
+import { IIdentifier } from "@veramo/core";
+import { DEFAULT_DID_PROVIDER_NAME } from "../veramo/setup";
+import { getRandomBytesSync } from "ethereum-cryptography/random";
+import { entropyToMnemonic } from "ethereum-cryptography/bip39";
+import { wordlist } from "ethereum-cryptography/bip39/wordlists/english";
+import { HDNode } from "@ethersproject/hdnode";
+
+/**
+ *
+ *
+ * @param {string} address
+ * @param {string} publicHex
+ * @param {string} privateHex
+ * @param {string} derivationPath
+ * @return {*}  {Omit<IIdentifier, 'provider'>}
+ */
+export const newIdentifier = (
+  address: string,
+  publicHex: string,
+  privateHex: string,
+  derivationPath: string
+): Omit<IIdentifier, keyof "provider"> => {
+  return {
+    did: DEFAULT_DID_PROVIDER_NAME + ":" + address,
+    keys: [
+      {
+        kid: publicHex,
+        kms: "local",
+        meta: { derivationPath: derivationPath },
+        privateKeyHex: privateHex,
+        publicKeyHex: publicHex,
+        type: "Secp256k1",
+      },
+    ],
+    provider: DEFAULT_DID_PROVIDER_NAME,
+    services: [],
+  };
+};
+
+export const deriveAddress = (
+  mnemonic: string
+): [string, string, string, string] => {
+  const UPORT_ROOT_DERIVATION_PATH = "m/7696500'/0'/0'/0'";
+  mnemonic = mnemonic.trim().toLowerCase();
+
+  const hdnode: HDNode = HDNode.fromMnemonic(mnemonic);
+  const rootNode: HDNode = hdnode.derivePath(UPORT_ROOT_DERIVATION_PATH);
+  const privateHex = rootNode.privateKey.substring(2); // original starts with '0x'
+  const publicHex = rootNode.publicKey.substring(2); // original starts with '0x'
+  const address = rootNode.address;
+
+  return [address, privateHex, publicHex, UPORT_ROOT_DERIVATION_PATH];
+};
+
+/**
+ *
+ *
+ * @return {*}  {string}
+ */
+export const createIdentifier = (): string => {
+  const entropy: Uint8Array = getRandomBytesSync(32);
+  const mnemonic = entropyToMnemonic(entropy, wordlist);
+
+  return mnemonic;
+};