diff --git a/package.json b/package.json
index 937c1b6..793cf72 100644
--- a/package.json
+++ b/package.json
@@ -26,8 +26,8 @@
     "build-types": "tsc --declaration --project tsconfig.build.json --incremental --outDir lib --emitDeclarationOnly",
     "build-web": "webpack --mode production --entry ./lib/web.js --output ./dist/bls.min.js",
     "check-types": "tsc --noEmit",
-    "lint": "eslint --ext .ts src/",
-    "lint:fix": "eslint --ext .ts src/ --fix",
+    "lint": "eslint --color --ext .ts src/",
+    "lint:fix": "yarn run lint --fix",
     "pretest": "yarn check-types",
     "prepublishOnly": "yarn build",
     "test:unit": "nyc --cache-dir .nyc_output/.cache -r lcov -e .ts mocha --colors -r ts-node/register 'test/unit/**/*.test.ts' && nyc report",
@@ -41,8 +41,7 @@
     "@chainsafe/eth2-bls-wasm": "^0.1.0",
     "@chainsafe/eth2.0-types": "^0.1.0",
     "assert": "^1.4.1",
-    "bls-wasm": "^0.2.7",
-    "js-sha256": "^0.9.0"
+    "bls-wasm": "^0.2.7"
   },
   "devDependencies": {
     "@babel/cli": "^7.2.3",
@@ -67,6 +66,7 @@
     "codecov": "^3.1.0",
     "eslint": "^5.14.1",
     "js-yaml": "^3.13.1",
+    "js-sha256": "^0.9.0",
     "mocha": "^6.2.0",
     "nyc": "^13.3.0",
     "sinon": "^7.2.7",
diff --git a/src/context.ts b/src/context.ts
index 6b9b5a9..0fb1585 100644
--- a/src/context.ts
+++ b/src/context.ts
@@ -1,9 +1,9 @@
-// eslint-disable-next-line import/no-extraneous-dependencies
 import blsWasmWrapper from "@chainsafe/eth2-bls-wasm";
 
 let blsWrapper: typeof blsWasmWrapper | null = null;
 
 export async function init(): Promise<typeof blsWasmWrapper> {
+  if(blsWrapper) return blsWrapper;
   await blsWasmWrapper.init();
   blsWrapper = blsWasmWrapper;
   return blsWrapper;
diff --git a/src/index.ts b/src/index.ts
index 7275111..d57c575 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -5,6 +5,7 @@ import {Signature} from "./signature";
 import {BLSPubkey, BLSSecretKey, BLSSignature, Domain, Hash} from "@chainsafe/eth2.0-types";
 import {init} from "./context";
 import {PUBLIC_KEY_LENGTH} from "./constants";
+
 export {Keypair, PrivateKey, PublicKey, Signature};
 
 
diff --git a/src/privateKey.ts b/src/privateKey.ts
index 6afd832..48865e1 100644
--- a/src/privateKey.ts
+++ b/src/privateKey.ts
@@ -30,6 +30,13 @@ export class PrivateKey {
     return new PrivateKey(context.deserializeHexStrToSecretKey(value));
   }
 
+  public static fromInt(num: number): PrivateKey {
+    const context = getContext();
+    const secretKey = new context.SecretKey();
+    secretKey.setInt(num);
+    return new PrivateKey(secretKey);
+  }
+
   public static random(): PrivateKey {
     const context = getContext();
     const secretKey = new context.SecretKey();
diff --git a/test/benchmarks/suites/index.ts b/test/benchmarks/suites/index.ts
index 9af379d..031b168 100644
--- a/test/benchmarks/suites/index.ts
+++ b/test/benchmarks/suites/index.ts
@@ -1,5 +1,5 @@
-export {verifyInValidSignatureBenchmark} from './verifyInValidSignature';
-export {verifyValidSignatureBenchmark} from './verifyValidSignature';
-export {verifyValidAggregatedSignature} from './verifyValidAggregatedSignature';
-export {verifyInvalidAggregatedSignature} from './verifyInvalidAggregatedSignature';
-export {aggregateSignaturesBenchmark} from './signatureAggregation';
\ No newline at end of file
+// export {verifyInValidSignatureBenchmark} from "./verifyInValidSignature";
+export {verifyValidSignatureBenchmark} from "./verifyValidSignature";
+// export {verifyValidAggregatedSignature} from "./verifyValidAggregatedSignature";
+// export {verifyInvalidAggregatedSignature} from "./verifyInvalidAggregatedSignature";
+// export {aggregateSignaturesBenchmark} from "./signatureAggregation";
\ No newline at end of file
diff --git a/test/benchmarks/suites/verifyValidAggregatedSignature.ts b/test/benchmarks/suites/verifyValidAggregatedSignature.ts
index d514508..88eaca6 100644
--- a/test/benchmarks/suites/verifyValidAggregatedSignature.ts
+++ b/test/benchmarks/suites/verifyValidAggregatedSignature.ts
@@ -41,7 +41,7 @@ export function verifyValidAggregatedSignature(dir: string): BenchSuite {
       const sha256 = require("js-sha256");
       const {aggregateSignatures} = require("../../../src");
       const message = Buffer.from(sha256.arrayBuffer(Math.random().toString(36)));
-      const signatures = [];
+      const signatures: any[] = [];
       global.messages = [];
       global.keypairs.forEach((keypair) => {
         signatures.push(keypair.privateKey.signMessage(message, global.domain).toBytesCompressed());
diff --git a/test/benchmarks/suites/verifyValidSignature.ts b/test/benchmarks/suites/verifyValidSignature.ts
index d77a2bb..7b7341a 100644
--- a/test/benchmarks/suites/verifyValidSignature.ts
+++ b/test/benchmarks/suites/verifyValidSignature.ts
@@ -2,6 +2,7 @@
 
 import {BenchSuite} from "@chainsafe/benchmark-utils";
 import {verify} from "../../../src";
+import {sha256} from "js-sha256";
 
 
 // eslint-disable-next-line @typescript-eslint/no-namespace
@@ -19,6 +20,10 @@ global.require = require;
 global.domain = Buffer.alloc(8);
 global.verify = verify;
 
+global.message = Buffer.from(sha256.arrayBuffer(Math.random().toString(36)));
+
+
+
 export function verifyValidSignatureBenchmark(dir: string): BenchSuite {
 
   // Set the function test
@@ -32,11 +37,11 @@ export function verifyValidSignatureBenchmark(dir: string): BenchSuite {
     name: FUNCTION_NAME,
     testFunctions: [verifyValidSignature],
     setup: function() {
-      const {Keypair} = require("../../../src");
-      const {sha256} = require('js-sha256');
-      const keypair = Keypair.generate();
+      let i = 0;
+      const {Keypair, PrivateKey} = require("../../../src");
+      const keypair = new Keypair(PrivateKey.fromInt(i));
+      i = i+1;
       global.publicKey = keypair.publicKey.toBytesCompressed();
-      global.message = Buffer.from(sha256.arrayBuffer(Math.random().toString(36)));
       global.signature = keypair.privateKey.signMessage(Buffer.from(global.message), global.domain).toBytesCompressed();
     },
     file: dir + FUNCTION_NAME + ".txt"