---
title: digest.hash_sha256
summary: null
url: >-
  https://www.fastly.com/documentation/reference/vcl/functions/cryptographic/digest-hash-sha256
---

```
STRING digest.hash_sha256(STRING s)
```

**Available in:** all subroutines

Returns a SHA-256 cryptographic hash for the string `s`.

## Example

```vcl
declare local var.hash_sha256 STRING;
set var.hash_sha256 = digest.hash_sha256("123456789");
# var.hash_sha256 is now "15e2b0d3c33891ebb0f1ef609ec419420c20e320ce94c65fbc8c3312448eb225"
```