OroPlatform API WSSE Header generation client Side in Angular2

account.service.ts

import { Injectable } from '@angular/core';
import { Http, Response, Headers } from '@angular/http';
import { Observable } from 'rxjs/Observable';
import 'rxjs/add/operator/map';
import 'rxjs/add/operator/catch';
import { Account } from '../model/account-model';
import hashes = require('crypto-js');
import moment = require('moment');

@Injectable()
export class AccountService {

  private actionUrl: string;
  private headers: Headers;



  constructor(private _http: Http) {

    this.actionUrl = 'http://dawkins.ut14php7.lo/app_dev.php/api/accounts/4625';

    // $userName = 'your username';
    // $userPassword = 'your password';
    // $nonce = uniqid();
    // $created  = date('c');
    // $digest   = base64_encode(sha1(base64_decode($nonce) . $created . $userPassword, true));
    // $digest   = base64_encode(sha1($nonce . $created . $userPassword, true));

    var username = 'admin';
    var password = '289cb21479bc8818234b513511ac22981e3a43df';

    var nonce = '';
    var possible = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789';
    var length = 13;
    for(var i = 0; i < length; i++) {
      nonce += possible.charAt(Math.floor(Math.random() * possible.length));
    }

    //2016-07-21T11:50:37+00:00
    var now = moment.utc( new Date() ).format();
    var created = now;
    console.log(created);
    // // Generating digest from secret, creation and nonce
    // var nonceDecode64 = hashes.enc.Base

    var _sha1 = hashes.SHA1(nonce+created+password);
    var digest = _sha1.toString(hashes.enc.Base64);

    nonce = hashes.enc.Utf8.parse(nonce);
    nonce = hashes.enc.Base64.stringify(nonce);
    // var hash = hashes.SHA1(nonce+created+password);
    // var digest = hashes.enc.Base64.stringify(hash);



    var str = 'UsernameToken Username="'+username+'", PasswordDigest="'+digest+'", Nonce="'+nonce+'", Created="'+created+'"';
    console.log(str);
    this.headers = new Headers();
    this.headers.append('Authorization', 'WSSE profile="UsernameToken"');
    this.headers.append('X-WSSE', str);
  }

  public GetAllAccounts = (): Observable<Account[]> => {
    //noinspection TypeScriptUnresolvedFunction
    return this._http.get(this.actionUrl, { headers: this.headers})
      .map((response: Response) => response.json())
      .catch(this.handleError);
  }


  private handleError(error: Response) {
    console.error(error);
    return Observable.throw(error.json().error || 'Server error');
  }
}