Enhancing website security using Content Security Policy in conjunction with Google Closure

Implementing CSP for my web application is a top priority. Here's the policy I have in mind:

"default-src 'self' gap: cdvfile;"

I rely on google closure for my javascript needs. However, it seems that without javascript optimization, my script gets blocked due to this issue:

goog.json.parse uses eval()

To resolve this, I can compile my code using closure compiler, which eliminates the use of eval() thanks to JSON.parse.

While I understand the workaround involving sha256-..... or nonce=...., I'm curious if there are any alternative methods to utilize CSP without relying on sha.. or nonce...

javascriptjsongoogle-closure-compilergoogle-closure-library

Answer №1

In my opinion, including 

goog.json.USE_NATIVE_JSON = true;
in your code will prevent the use of eval.

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