Merge commit 'a3535c8486b2ce762b1a8a9c30b03985c3e02cee'

docs/content/en/hugo-pipes/fingerprint.md

@@ -0,0 +1,29 @@
+---
+title: Fingerprinting and SRI
+description: Hugo Pipes allows Fingerprinting and Subresource Integrity.
+date: 2018-07-14
+publishdate: 2018-07-14
+lastmod: 2018-07-14
+categories: [asset management]
+keywords: []
+menu:
+  docs:
+    parent: "pipes"
+    weight: 70
+weight: 70
+sections_weight: 70
+draft: false
+---
+
+
+Fingerprinting and [SRI](https://developer.mozilla.org/en-US/docs/Web/Security/Subresource_Integrity) can be applied to any asset file using `resources.Fingerpint` which takes two arguments, the resource object and a [hash function](https://en.wikipedia.org/wiki/Cryptographic_hash_function). 
+
+The default hash function is `sha256`. Other available functions are `sha512` and `md5`.
+
+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.
+
+```go-html-template
+{{ $js := resources.Get "js/global.js" }}
+{{ $secureJS := $js | resources.Fingerprint "sha512" }}
+<script type="text/javascript" src="{{ $secureJS.Permalink }}" integrity="{{ $secureJS.Data.Integrity }}"></script>
+```