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gcloud compute backend-services add-signed-url-key | Google Cloud SDK Documentation

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NAME

gcloud compute backend-services add-signed-url-key - add Cloud CDN Signed URL key to a backend service

SYNOPSIS

gcloud compute backend-services add-signed-url-key BACKEND_SERVICE_NAME --key-file=LOCAL_FILE_PATH --key-name=KEY_NAME [GCLOUD_WIDE_FLAG …]

DESCRIPTION

gcloud compute backend-services add-signed-url-key is used to add a new Cloud CDN Signed URL key to a backend service.

Cloud CDN Signed URLs give you a way to serve responses from the globally distributed CDN cache, even if the request needs to be authorized.

Signed URLs are a mechanism to temporarily give a client access to a private resource without requiring additional authorization. To achieve this, the full request URL that should be allowed is hashed and cryptographically signed. By using the signed URL you give it, that one request will be considered authorized to receive the requested content.

Generally, a signed URL can be used by anyone who has it. However, it is usually only intended to be used by the client that was directly given the URL. To mitigate this, they expire at a time chosen by the issuer. To minimize the risk of a signed URL being shared, it is recommended that the signed URL be set to expire as soon as possible.

A 128-bit secret key is used for signing the URLs.

POSITIONAL ARGUMENTS

BACKEND_SERVICE_NAME

Name of the backend service to operate on.

REQUIRED FLAGS

--key-file=LOCAL_FILE_PATH

The file containing the RFC 4648 Section 5 base64url encoded 128-bit secret key for Cloud CDN Signed URL. It is vital that the key is strongly random. One way to generate such a key is with the following command:

head -c 16 /dev/random | base64 | tr +/ -_ > [KEY_FILE_NAME]

--key-name=KEY_NAME

Name of the Cloud CDN Signed URL key.

GCLOUD WIDE FLAGS

These flags are available to all commands: --access-token-file, --account, --billing-project, --configuration, --flags-file, --flatten, --format, --help, --impersonate-service-account, --log-http, --project, --quiet, --trace-token, --user-output-enabled, --verbosity.

Run $ gcloud help for details.

NOTES

These variants are also available:

gcloud alpha compute backend-services add-signed-url-key

gcloud beta compute backend-services add-signed-url-key

Except as otherwise noted, the content of this page is licensed under the Creative Commons Attribution 4.0 License, and code samples are licensed under the Apache 2.0 License. For details, see the Google Developers Site Policies. Java is a registered trademark of Oracle and/or its affiliates.

Last updated 2025-07-22 UTC.

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