From 847ec46ac9aac80722f603ce3ae8ece98bd9a633 Mon Sep 17 00:00:00 2001
From: dapplion <guillem.lion.benosa@gmail.com>
Date: Wed, 25 Nov 2020 15:06:05 +0000
Subject: [PATCH] Remove crypto from common helpers

---
 src/blst/privateKey.ts | 5 +++--
 src/functional.ts      | 2 +-
 src/helpers/utils.ts   | 6 ------
 3 files changed, 4 insertions(+), 9 deletions(-)

diff --git a/src/blst/privateKey.ts b/src/blst/privateKey.ts
index a421147..c9d7a29 100644
--- a/src/blst/privateKey.ts
+++ b/src/blst/privateKey.ts
@@ -1,5 +1,6 @@
+import crypto from "crypto";
 import * as blst from "@chainsafe/blst";
-import {bytesToHex, getRandomBytes, hexToBytes} from "../helpers/utils";
+import {bytesToHex, hexToBytes} from "../helpers/utils";
 import {IPrivateKey} from "../interface";
 import {PublicKey} from "./publicKey";
 import {Signature} from "./signature";
@@ -21,7 +22,7 @@ export class PrivateKey implements IPrivateKey {
   }
 
   static fromKeygen(entropy?: Uint8Array): PrivateKey {
-    const sk = blst.SecretKey.fromKeygen(entropy || getRandomBytes(32));
+    const sk = blst.SecretKey.fromKeygen(entropy || crypto.randomBytes(32));
     return new PrivateKey(sk);
   }
 
diff --git a/src/functional.ts b/src/functional.ts
index f25e670..ddc84bc 100644
--- a/src/functional.ts
+++ b/src/functional.ts
@@ -1,4 +1,4 @@
-import assert from "assert";
+import {assert} from "./helpers";
 import {IBls} from "./interface";
 
 // Returned type is enforced at each implementation's index
diff --git a/src/helpers/utils.ts b/src/helpers/utils.ts
index fecda8c..2451c50 100644
--- a/src/helpers/utils.ts
+++ b/src/helpers/utils.ts
@@ -1,5 +1,3 @@
-import crypto from "crypto";
-
 export function assert(condition: unknown, message = "Assertion failed"): asserts condition {
   if (!condition) {
     throw new Error(message);
@@ -14,10 +12,6 @@ export function bytesToHex(bytes: Uint8Array): string {
   return "0x" + Buffer.from(bytes).toString("hex");
 }
 
-export function getRandomBytes(size: number): Uint8Array {
-  return Uint8Array.from(crypto.randomBytes(size));
-}
-
 export function isEqualBytes(a: Buffer | Uint8Array, b: Buffer | Uint8Array): boolean {
   return Buffer.from(a).equals(Buffer.from(b));
 }