64 lines
1.7 KiB
Markdown
64 lines
1.7 KiB
Markdown
---
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layout: "api"
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page_title: /sys/audit-hash - HTTP API"
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sidebar_current: "docs-http-system-audit-hash"
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description: |-
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The `/sys/audit-hash` endpoint is used to hash data using an audit device's
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hash function and salt.
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---
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# `/sys/audit-hash`
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The `/sys/audit-hash` endpoint is used to calculate the hash of the data used by
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an audit device's hash function and salt. This can be used to search audit logs
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for a hashed value when the original value is known.
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## Calculate Hash
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This endpoint hashes the given input data with the specified audit device's
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hash function and salt. This endpoint can be used to discover whether a given
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plaintext string (the `input` parameter) appears in the audit log in obfuscated
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form.
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The audit log records requests and responses. Since the Vault API is JSON-based,
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any binary data returned from an API call (such as a DER-format certificate) is
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base64-encoded by the Vault server in the response. As a result such information
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should also be base64-encoded to supply into the `input` parameter.
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| Method | Path | Produces |
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| :------- | :---------------------- | :--------------------- |
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| `POST` | `/sys/audit-hash/:path` | `204 (empty body)` |
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### Parameters
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- `path` `(string: <required>)` – Specifies the path of the audit device to
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generate hashes for. This is part of the request URL.
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- `input` `(string: <required>)` – Specifies the input string to hash.
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### Sample Payload
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```json
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{
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"input": "my-secret-vault"
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}
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```
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### Sample Request
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```
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$ curl \
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--header "X-Vault-Token: ..." \
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--request POST \
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--data @payload.json \
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http://127.0.0.1:8200/v1/sys/audit-hash/example-audit
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```
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### Sample Response
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```json
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{
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"hash": "hmac-sha256:08ba35..."
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}
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```
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