Initial commit

key-derivation.service.js

@@ -0,0 +1,27 @@
+import {
+  generateMnemonic as generateMnemonic_bip39,
+  mnemonicToSeed,
+} from "web-bip39";
+import wordlist from "web-bip39/wordlists/english";
+import elliptic from "elliptic";
+
+const MNEMONIC_STRENGTH = 192;
+const CURVE = "curve25519"
+
+export async function generateKeyPair(mnemonic) {
+  const seed = (await mnemonicToSeed(mnemonic)).toString("hex");
+
+  const ec = new elliptic.ec(CURVE);
+  const keyPair = ec.genKeyPair({
+    entropy: seed.slice(0, 32),
+  });
+
+  return {
+    publicKey: keyPair.getPublic("hex"),
+    privateKey: keyPair.getPrivate("hex"),
+  }
+}
+
+export function generateMnemonic() {
+  return generateMnemonic_bip39(wordlist, MNEMONIC_STRENGTH);
+}