## Get Certificate

`origin_ca_certificates.get(strcertificate_id)  -> OriginCACertificate`

**get** `/certificates/{certificate_id}`

Get an existing Origin CA certificate by its serial number. You can use an Origin CA Key as your User Service Key or an API token when calling this endpoint ([see above](#requests)).

### Parameters

- `certificate_id: str`

  Identifier.

### Returns

- `class OriginCACertificate: …`

  - `csr: str`

    The Certificate Signing Request (CSR). Must be newline-encoded.

  - `hostnames: List[str]`

    Array of hostnames or wildcard names bound to the certificate.
    Hostnames must be fully qualified domain names (FQDNs) belonging to zones on your account (e.g., `example.com` or `sub.example.com`). Wildcards are supported only as a `*.` prefix for a single level (e.g., `*.example.com`). Double wildcards (`*.*.example.com`) and interior wildcards (`foo.*.example.com`) are not allowed. The wildcard suffix must be a multi-label domain (`*.example.com` is valid, but `*.com` is not). Unicode/IDN hostnames are accepted and automatically converted to punycode.

  - `request_type: CertificateRequestType`

    Signature type desired on certificate ("origin-rsa" (rsa), "origin-ecc" (ecdsa), or "keyless-certificate" (for Keyless SSL servers).

    - `"origin-rsa"`

    - `"origin-ecc"`

    - `"keyless-certificate"`

  - `requested_validity: RequestValidity`

    The number of days for which the certificate should be valid.

    - `7`

    - `30`

    - `90`

    - `365`

    - `730`

    - `1095`

    - `5475`

  - `id: Optional[str]`

    Identifier.

  - `certificate: Optional[str]`

    The Origin CA certificate. Will be newline-encoded.

  - `expires_on: Optional[str]`

    When the certificate will expire.

### Example

```python
import os
from cloudflare import Cloudflare

client = Cloudflare(
    user_service_key=os.environ.get("CLOUDFLARE_API_USER_SERVICE_KEY"),  # This is the default and can be omitted
)
origin_ca_certificate = client.origin_ca_certificates.get(
    "023e105f4ecef8ad9ca31a8372d0c353",
)
print(origin_ca_certificate.requested_validity)
```

#### Response

```json
{
  "errors": [
    {
      "code": 1000,
      "message": "message",
      "documentation_url": "documentation_url",
      "source": {
        "pointer": "pointer"
      }
    }
  ],
  "messages": [
    {
      "code": 1000,
      "message": "message",
      "documentation_url": "documentation_url",
      "source": {
        "pointer": "pointer"
      }
    }
  ],
  "success": true,
  "result": {
    "csr": "-----BEGIN CERTIFICATE REQUEST-----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\ndcWYTthM51JIqRBfNqy4QcBnX+GY05yltEEswQI55wdiS3CjTTA67sdbcQ==\n-----END CERTIFICATE REQUEST-----",
    "hostnames": [
      "example.com",
      "*.example.com",
      "sub.example.com"
    ],
    "request_type": "origin-rsa",
    "requested_validity": 5475,
    "id": "023e105f4ecef8ad9ca31a8372d0c353",
    "certificate": "-----BEGIN CERTIFICATE-----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\n97Ob1alpHPoZ7mWiEuJwjBPii6a9M9G30nUo39lBi1w=\n-----END CERTIFICATE-----",
    "expires_on": "2014-01-01 05:20:00 +0000 UTC"
  }
}
```