[feat] oxyde scrypt

app/modules/keypair/lib/scrypt.ts

@@ -11,8 +11,7 @@
 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 // GNU Affero General Public License for more details.
 
-import * as crypto from "crypto";
-import { KeyPairBuilder, seedToSecretKey } from "../../../../neon/lib";
+import { KeyPairBuilder, scrypt, seedToSecretKey } from "../../../../neon/lib";
 
 const SEED_LENGTH = 32; // Length of the key
 
@@ -20,7 +19,7 @@ const SEED_LENGTH = 32; // Length of the key
  * Generates a new keypair object from salt + password strings.
  * @param salt
  * @param key
- * @param N Scrypt parameter N. Defaults to 4096.
+ * @param log_n Scrypt parameter log n. Defaults to 12.
  * @param r Scrypt parameter r. Defaults to 16.
  * @param p Scrypt parameter p. Defaults to 1.
  * @return keyPair An object containing the public and private keys, base58 encoded.
@@ -28,28 +27,14 @@ const SEED_LENGTH = 32; // Length of the key
 export const Scrypt = async (
   salt: string,
   key: string,
-  N = 4096,
+  log_n = 12,
   r = 16,
   p = 1
 ) => {
-  const res: { pub: string; sec: string } = await new Promise(
-    (resolve, reject) => {
-      crypto.scrypt(
-        key,
-        salt,
-        SEED_LENGTH,
-        { N, r, p },
-        (err: any, seed: Buffer) => {
-          if (err) return reject(err);
-          const pair = KeyPairBuilder.fromSeed(seed);
-          resolve({
-            pub: pair.getPublicKey(),
-            sec: seedToSecretKey(seed),
-          });
-        }
-      );
-    }
-  );
+  const seed = scrypt(salt, key, log_n, r, p);
 
-  return res;
+  return {
+    pub: KeyPairBuilder.fromSeed(seed).getPublicKey(),
+    sec: seedToSecretKey(seed),
+  };
 };