---
title: "POST /projects/{project}/zones/{zone}/instances/{instance}/startWithEncryptionKey"
method: POST
path: "/projects/{project}/zones/{zone}/instances/{instance}/startWithEncryptionKey"
tags: ["instances"]
---

# POST /projects/{project}/zones/{zone}/instances/{instance}/startWithEncryptionKey

`POST /projects/{project}/zones/{zone}/instances/{instance}/startWithEncryptionKey`

Starts an instance that was stopped using theinstances().stop
method. For more information, seeRestart an
instance.

## Path parameters

- `project` string, required
- `zone` string, required
- `instance` string, required

## Query parameters

- `requestId` string

## Request body

- InstancesStartWithEncryptionKeyRequest
  - `disks` CustomerEncryptionKeyProtectedDisk[] — Array of disks associated with this instance that are protected with acustomer-supplied encryption key. In order to start the instance, the disk url and its corresponding key must be provided. If the disk is not protected with a customer-supplied encryption key it should not be specified.
    - `source` string — Specifies a valid partial or full URL to an existing Persistent Disk resource. This field is only applicable for persistent disks. For example: "source": "/compute/v1/projects/project_id/zones/zone/disks/ disk_name
    - `diskEncryptionKey` CustomerEncryptionKey
      - `kmsKeyName` string — The name of the encryption key that is stored in Google Cloud KMS. For example: "kmsKeyName": "projects/kms_project_id/locations/region/keyRings/ key_region/cryptoKeys/key The fully-qualifed key name may be returned for resource GET requests. For example: "kmsKeyName": "projects/kms_project_id/locations/region/keyRings/ key_region/cryptoKeys/key /cryptoKeyVersions/1
      - `sha256` string — [Output only] TheRFC 4648 base64 encoded SHA-256 hash of the customer-supplied encryption key that protects this resource.
      - `rawKey` string — Specifies a 256-bit customer-supplied encryption key, encoded in RFC 4648 base64 to either encrypt or decrypt this resource. You can provide either the rawKey or thersaEncryptedKey. For example: "rawKey": "SGVsbG8gZnJvbSBHb29nbGUgQ2xvdWQgUGxhdGZvcm0="
      - `kmsKeyServiceAccount` string — The service account being used for the encryption request for the given KMS key. If absent, the Compute Engine default service account is used. For example: "kmsKeyServiceAccount": "name@project_id.iam.gserviceaccount.com/
      - `rsaEncryptedKey` string — Specifies an RFC 4648 base64 encoded, RSA-wrapped 2048-bit customer-supplied encryption key to either encrypt or decrypt this resource. You can provide either the rawKey or thersaEncryptedKey. For example: "rsaEncryptedKey": "ieCx/NcW06PcT7Ep1X6LUTc/hLvUDYyzSZPPVCVPTVEohpeHASqC8uw5TzyO9U+Fka9JFH z0mBibXUInrC/jEk014kCK/NPjYgEMOyssZ4ZINPKxlUh2zn1bV+MCaTICrdmuSBTWlUUiFoD D6PYznLwh8ZNdaheCeZ8ewEXgFQ8V+sDroLaN3Xs3MDTXQEMMoNUXMCZEIpg9Vtp9x2oe==" The key must meet the following requirements before you can provide it to Compute Engine: 1. The key is wrapped using a RSA public key certificate provided by Google. 2. After being wrapped, the key must be encoded in RFC 4648 base64 encoding. Gets the RSA public key certificate provided by Google at: https://cloud-certs.storage.googleapis.com/google-cloud-csek-ingress.pem

## Response `200`

Successful response

---

[API](https://skmtc.net/google/apis/compute.md) · [All operations](https://skmtc.net/google/apis/compute/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/google/compute/versions/6120ed8969d4/schema)