> ## Documentation Index
> Fetch the complete documentation index at: https://docs.gobl.org/llms.txt
> Use this file to discover all available pages before exploring further.

# Digest

Digest defines a structure to hold a digest value including the algorithm used to generate it.

## Schema ID

`https://gobl.org/draft-0/dsig/digest`

## Properties

| Title     | Property | Type   | Description                                                                                     |
| --------- | -------- | ------ | ----------------------------------------------------------------------------------------------- |
| Algorithm | `alg`    | string | Algorithm stores the algorithm key that was used to generate the value.                         |
| Value     | `val`    | string | Value contains the Hexadecimal representation of the resulting hash generated by the algorithm. |

## Validation Rules

| Field | Test                                                                  | Validation Code / Message                        |
| ----- | --------------------------------------------------------------------- | ------------------------------------------------ |
| `alg` | <ul class="gobl-test"><li class="gobl-test-present">Present</li></ul> | `GOBL-DSIG-DIGEST-01`<br />Algorithm is required |
| `val` | <ul class="gobl-test"><li class="gobl-test-present">Present</li></ul> | `GOBL-DSIG-DIGEST-02`<br />Value is required     |