Yap is a Browser Based Extention for Firefox made on HITB2012AMS made by Pieter Vlasblom and Erik Kooistra. we won the 1337 prize
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YAP - Yet Another Plugin

Made by Erik Kooistra and Pieter Vlasblom on HITB2012AMS Hackweekday. We won 1337 Dollar, and we are now going to continue development.

The plugin is a very very basic proof of concept to proof that we can compare sha1 hashes based on a sha1 file.


Add SSL Checks

Add a basic API For developers to create systems to retrieve hashes!


in the future we want to be able to change the download location to a secure sandbox, and give the user the option to delete the file if the hashes fail.

We want to be able to make sure our end-users are safe and secure!


Copyright [2012] [Erik Kooistra and Pieter Vlasblom]

Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at


Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.