---
type: api
title: Delegate PKI authentication
description: This API implements the exchange of an X509Certificate chain for an Elasticsearch access token.
url: https://www.elastic.co/elastic/docs-builder/docs/4371/api/doc/elasticsearch/v8/operation/operation-security-delegate-pki
resource: https://www.elastic.co/elastic/docs-builder/docs/4371/api/doc/elasticsearch/v8/operation/operation-security-delegate-pki
products:
  - Elasticsearch
---

# Delegate PKI authentication

Availability: 7.4+

## Paths

- `POST` `/_security/delegate_pki`

- [Api key auth](/elastic/docs-builder/docs/4371/api/doc/elasticsearch/v8/authentication#apikeyauth)
- [Basic auth](/elastic/docs-builder/docs/4371/api/doc/elasticsearch/v8/authentication#basicauth)
- [Bearer auth](/elastic/docs-builder/docs/4371/api/doc/elasticsearch/v8/authentication#bearerauth)

## Description

This API implements the exchange of an X509Certificate chain for an Elasticsearch access token.
The certificate chain is validated, according to RFC 5280, by sequentially considering the trust configuration of every installed PKI realm that has `delegation.enabled` set to `true`.
A successfully trusted client certificate is also subject to the validation of the subject distinguished name according to thw `username_pattern` of the respective realm.

This API is called by smart and trusted proxies, such as Kibana, which terminate the user's TLS session but still want to authenticate the user by using a PKI realm—-​as if the user connected directly to Elasticsearch.

IMPORTANT: The association between the subject public key in the target certificate and the corresponding private key is not validated.
This is part of the TLS authentication process and it is delegated to the proxy that calls this API.
The proxy is trusted to have performed the TLS authentication and this API translates that authentication into an Elasticsearch access token.

## Required authorization

* Cluster privileges: `all`

[Read the reference documentation](https://www.elastic.co/guide/en/elasticsearch/reference/8.19/pki-realm.html)

## Request Body

`application/json`

- `x509_certificate_chain` ([] string) — required
  The X509Certificate chain, which is represented as an ordered string array.
Each string in the array is a base64-encoded (Section 4 of RFC4648 - not base64url-encoded) of the certificate's DER encoding.

The first element is the target certificate that contains the subject distinguished name that is requesting access.
This may be followed by additional certificates; each subsequent certificate is used to certify the previous one.

## Response

`application/json`

- `access_token` (string)
  An access token associated with the subject distinguished name of the client's certificate.
- `expires_in` (number)
  The amount of time (in seconds) before the token expires.
- `type` (string)
  The type of token.
- `authentication` ({} Authentication)
  - `username` (string)
  - `roles` ([] string)
  - `full_name` (union string) — nullable
    One of: `string`
  - `email` (union string) — nullable
    One of: `string`
  - `token` (map string to string)
  - `metadata` (Metadata)
  - `enabled` (boolean)
  - `authentication_realm` ({} AuthenticationRealm)
    - `name` (string)
    - `type` (string)
    - `domain` (string)
  - `lookup_realm` ({} AuthenticationRealm)
    - `name` (string)
    - `type` (string)
    - `domain` (string)
  - `authentication_type` (string)
  - `api_key` (map string to string)
## Code Examples

#### Console

```console
POST /_security/delegate_pki
{
"x509_certificate_chain": ["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"]
}
```

#### JavaScript

```javascript
const response = await client.security.delegatePki({
  x509_certificate_chain: [
    "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",
  ],
});
```

#### Python

```python
resp = client.security.delegate_pki(
    x509_certificate_chain=[
        "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"
    ],
)
```

#### curl

```curl
curl -X POST "$ELASTICSEARCH_URL/_security/delegate_pki" \
  -H "Authorization: ApiKey $ELASTIC_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "x509_certificate_chain": [
      "MIIDeDCCAmCgAwIBAgIUBzj/nGGKxP2iXawsSquHmQjCJmMwDQYJKoZIhvcNAQELBQAwUzErMCkGA1UEAxMiRWxhc3RpY3NlYXJjaCBUZXN0IEludGVybWVkaWF0ZSBDQTEWMBQGA1UECxMNRWxhc3RpY3NlYXJjaDEMMAoGA1UEChMDb3JnMB4XDTIzMDcxODE5MjkwNloXDTQzMDcxMzE5MjkwNlowSjEiMCAGA1UEAxMZRWxhc3RpY3NlYXJjaCBUZXN0IENsaWVudDEWMBQGA1UECxMNRWxhc3RpY3NlYXJjaDEMMAoGA1UEChMDb3JnMIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAllHL4pQkkfwAm/oLkxYYO\u002Br950DEy1bjH\u002B4viCHzNADLCTWO\u002BlOZJVlNx7QEzJE3QGMdif9CCBBxQFMapA7oUFCLq84fPSQQu5AnvvbltVD9nwVtCs\u002B9ZGDjMKsz98RhSLMFIkxdxi6HkQ3Lfa4ZSI4lvba4oo\u002BT/GveazBDS\u002BNgmKyq00EOXt3tWi1G9vEVItommzXWfv0agJWzVnLMldwkPqsw0W7zrpyT7FZS4iLbQADGceOW8fiauOGMkscu9zAnDR/SbWl/chYioQOdw6ndFLn1YIFPd37xL0WsdsldTpn0vH3YfzgLMffT/3P6YlwBegWzsx6FnM/93Ecb4wIDAQABo00wSzAJBgNVHRMEAjAAMB0GA1UdDgQWBBQKNRwjW\u002BAd/FN1Rpoqme/5\u002BjrFWzAfBgNVHSMEGDAWgBRcya0c0x/PaI7MbmJVIylWgLqXNjANBgkqhkiG9w0BAQsFAAOCAQEACZ3PF7Uqu47lplXHP6YlzYL2jL0D28hpj5lGtdha4Muw1m/BjDb0Pu8l0NQ1z3AP6AVcvjNDkQq6Y5jeSz0bwQlealQpYfo7EMXjOidrft1GbqOMFmTBLpLA9SvwYGobSTXWTkJzonqVaTcf80HpMgM2uEhodwTcvz6v1WEfeT/HMjmdIsq4ImrOL9RNrcZG6nWfw0HR3JNOgrbfyEztEI471jHznZ336OEcyX7gQuvHE8tOv5\u002BoD1d7s3Xg1yuFp\u002BYnh\u002BFfOi3hPCuaHA\u002B7F6fLmzMDLVUBAllugst1C3U\u002BL/paD7tqIa4ka\u002BKNPCbSfwazmJrt4XNiivPR4hwH5g=="
    ]
  }'
```

#### Java

```java
client.security().delegatePki(d -> d
    .x509CertificateChain("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")
);
```

#### C#

```c#
var response = await client.Security
    .DelegatePkiAsync(d1 => d1
        .X509CertificateChain("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")
    );
```

#### PHP

```php
$requestFactory = Psr17FactoryDiscovery::findRequestFactory();
$streamFactory = Psr17FactoryDiscovery::findStreamFactory();
$request = $requestFactory->createRequest(
    "POST",
    "/_security/delegate_pki",
);
$request = $request->withHeader("Content-Type", "application/json");
$request = $request->withBody($streamFactory->createStream(
    json_encode([
        "x509_certificate_chain" => array(
            "MIIDeDCCAmCgAwIBAgIUBzj/nGGKxP2iXawsSquHmQjCJmMwDQYJKoZIhvcNAQELBQAwUzErMCkGA1UEAxMiRWxhc3RpY3NlYXJjaCBUZXN0IEludGVybWVkaWF0ZSBDQTEWMBQGA1UECxMNRWxhc3RpY3NlYXJjaDEMMAoGA1UEChMDb3JnMB4XDTIzMDcxODE5MjkwNloXDTQzMDcxMzE5MjkwNlowSjEiMCAGA1UEAxMZRWxhc3RpY3NlYXJjaCBUZXN0IENsaWVudDEWMBQGA1UECxMNRWxhc3RpY3NlYXJjaDEMMAoGA1UEChMDb3JnMIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAllHL4pQkkfwAm/oLkxYYO+r950DEy1bjH+4viCHzNADLCTWO+lOZJVlNx7QEzJE3QGMdif9CCBBxQFMapA7oUFCLq84fPSQQu5AnvvbltVD9nwVtCs+9ZGDjMKsz98RhSLMFIkxdxi6HkQ3Lfa4ZSI4lvba4oo+T/GveazBDS+NgmKyq00EOXt3tWi1G9vEVItommzXWfv0agJWzVnLMldwkPqsw0W7zrpyT7FZS4iLbQADGceOW8fiauOGMkscu9zAnDR/SbWl/chYioQOdw6ndFLn1YIFPd37xL0WsdsldTpn0vH3YfzgLMffT/3P6YlwBegWzsx6FnM/93Ecb4wIDAQABo00wSzAJBgNVHRMEAjAAMB0GA1UdDgQWBBQKNRwjW+Ad/FN1Rpoqme/5+jrFWzAfBgNVHSMEGDAWgBRcya0c0x/PaI7MbmJVIylWgLqXNjANBgkqhkiG9w0BAQsFAAOCAQEACZ3PF7Uqu47lplXHP6YlzYL2jL0D28hpj5lGtdha4Muw1m/BjDb0Pu8l0NQ1z3AP6AVcvjNDkQq6Y5jeSz0bwQlealQpYfo7EMXjOidrft1GbqOMFmTBLpLA9SvwYGobSTXWTkJzonqVaTcf80HpMgM2uEhodwTcvz6v1WEfeT/HMjmdIsq4ImrOL9RNrcZG6nWfw0HR3JNOgrbfyEztEI471jHznZ336OEcyX7gQuvHE8tOv5+oD1d7s3Xg1yuFp+Ynh+FfOi3hPCuaHA+7F6fLmzMDLVUBAllugst1C3U+L/paD7tqIa4ka+KNPCbSfwazmJrt4XNiivPR4hwH5g==",
        ),
    ]),
));
$resp = $client->sendRequest($request);
```

#### Ruby

```ruby
response = client.security.delegate_pki(
  body: {
    "x509_certificate_chain": [
      "MIIDeDCCAmCgAwIBAgIUBzj/nGGKxP2iXawsSquHmQjCJmMwDQYJKoZIhvcNAQELBQAwUzErMCkGA1UEAxMiRWxhc3RpY3NlYXJjaCBUZXN0IEludGVybWVkaWF0ZSBDQTEWMBQGA1UECxMNRWxhc3RpY3NlYXJjaDEMMAoGA1UEChMDb3JnMB4XDTIzMDcxODE5MjkwNloXDTQzMDcxMzE5MjkwNlowSjEiMCAGA1UEAxMZRWxhc3RpY3NlYXJjaCBUZXN0IENsaWVudDEWMBQGA1UECxMNRWxhc3RpY3NlYXJjaDEMMAoGA1UEChMDb3JnMIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAllHL4pQkkfwAm/oLkxYYO+r950DEy1bjH+4viCHzNADLCTWO+lOZJVlNx7QEzJE3QGMdif9CCBBxQFMapA7oUFCLq84fPSQQu5AnvvbltVD9nwVtCs+9ZGDjMKsz98RhSLMFIkxdxi6HkQ3Lfa4ZSI4lvba4oo+T/GveazBDS+NgmKyq00EOXt3tWi1G9vEVItommzXWfv0agJWzVnLMldwkPqsw0W7zrpyT7FZS4iLbQADGceOW8fiauOGMkscu9zAnDR/SbWl/chYioQOdw6ndFLn1YIFPd37xL0WsdsldTpn0vH3YfzgLMffT/3P6YlwBegWzsx6FnM/93Ecb4wIDAQABo00wSzAJBgNVHRMEAjAAMB0GA1UdDgQWBBQKNRwjW+Ad/FN1Rpoqme/5+jrFWzAfBgNVHSMEGDAWgBRcya0c0x/PaI7MbmJVIylWgLqXNjANBgkqhkiG9w0BAQsFAAOCAQEACZ3PF7Uqu47lplXHP6YlzYL2jL0D28hpj5lGtdha4Muw1m/BjDb0Pu8l0NQ1z3AP6AVcvjNDkQq6Y5jeSz0bwQlealQpYfo7EMXjOidrft1GbqOMFmTBLpLA9SvwYGobSTXWTkJzonqVaTcf80HpMgM2uEhodwTcvz6v1WEfeT/HMjmdIsq4ImrOL9RNrcZG6nWfw0HR3JNOgrbfyEztEI471jHznZ336OEcyX7gQuvHE8tOv5+oD1d7s3Xg1yuFp+Ynh+FfOi3hPCuaHA+7F6fLmzMDLVUBAllugst1C3U+L/paD7tqIa4ka+KNPCbSfwazmJrt4XNiivPR4hwH5g=="
    ]
  }
)
```

## Response Examples

#### Security delegate pki response example1

A successful response from delegating a one element certificate chain.

```json
{
  "access_token": "dGhpcyBpcyBub3QgYSByZWFsIHRva2VuIGJ1dCBpdCBpcyBvbmx5IHRlc3QgZGF0YS4gZG8gbm90IHRyeSB0byByZWFkIHRva2VuIQ==",
  "type": "Bearer",
  "expires_in": 1200,
  "authentication": {
    "username": "Elasticsearch Test Client",
    "roles": [],
    "full_name": null,
    "email": null,
    "metadata": {
      "pki_dn": "O=org, OU=Elasticsearch, CN=Elasticsearch Test Client",
      "pki_delegated_by_user": "test_admin",
      "pki_delegated_by_realm": "file"
    },
    "enabled": true,
    "authentication_realm": {
      "name": "pki1",
      "type": "pki"
    },
    "lookup_realm": {
      "name": "pki1",
      "type": "pki"
    },
    "authentication_type": "realm"
  }
}
```