"$schema": "http://json-schema.org/draft-04/schema"
"$id": "https://nix.dev/manual/nix/latest/protocols/json/schema/hash-v1.json"
title: Hash
description: |
  A cryptographic hash value used throughout Nix for content addressing and integrity verification.

  This schema describes the JSON representation of Nix's `Hash` type as an [SRI](https://developer.mozilla.org/en-US/docs/Web/Security/Subresource_Integrity) string.
type: string
pattern: "^(blake3|md5|sha1|sha256|sha512)-[A-Za-z0-9+/]+=*$"
examples:
- "sha256-ungWv48Bz+pBQUDeXa4iI7ADYaOWF3qctBD/YfIAFa0="
- "sha512-IEqPxt2oLwoM7XvrjgikFlfBbvRosiioJ5vjMacDwzWW/RXBOxsH+aodO+pXeJygMa2Fx6cd1wNU7GMSOMo0RQ=="

"$defs":
  algorithm:
    type: string
    enum:
    - blake3
    - md5
    - sha1
    - sha256
    - sha512
    title: Hash algorithm
    description: |
      The hash algorithm used to compute the hash value.

      `blake3` is currently experimental and requires the [`blake-hashing`](@docroot@/development/experimental-features.md#xp-feature-blake3-hashes) experimental feature.