fingerprint.md (1153B)
1 ---
2 title: Fingerprinting and SRI
3 description: Hugo Pipes allows Fingerprinting and Subresource Integrity.
4 date: 2018-07-14
5 publishdate: 2018-07-14
6 lastmod: 2018-07-14
7 categories: [asset management]
8 keywords: []
9 menu:
10 docs:
11 parent: "pipes"
12 weight: 70
13 weight: 70
14 sections_weight: 70
15 draft: false
16 ---
17
18
19 Fingerprinting and [SRI](https://developer.mozilla.org/en-US/docs/Web/Security/Subresource_Integrity) can be applied to any asset file using `resources.Fingerprint` which takes two arguments, the resource object and a [hash function](https://en.wikipedia.org/wiki/Cryptographic_hash_function).
20
21 The default hash function is `sha256`. Other available functions are `sha384` (from Hugo `0.55`), `sha512` and `md5`.
22
23 Any so processed asset will bear a `.Data.Integrity` property containing an integrity string, which is made up of the name of the hash function, one hyphen and the base64-encoded hash sum.
24
25 ```go-html-template
26 {{ $js := resources.Get "js/global.js" }}
27 {{ $secureJS := $js | resources.Fingerprint "sha512" }}
28 <script type="text/javascript" src="{{ $secureJS.Permalink }}" integrity="{{ $secureJS.Data.Integrity }}"></script>
29 ```