POST HMAC Key
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Creates, updates, or deletes an HMAC key.

Use a POST HMAC key request to:

Common request headers

The following are common request headers for POST HMAC Key.

Header	Description	Required
`Authorization`	The authentication string for the request.	Yes
`Date`	The date and time of the request.	Yes
`Host`	The URI for Cloud Storage. For more information, see Request Endpoints.	Yes
`x-goog-user-project`	The project to be billed for charges associated with the request.	No

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Last updated 2025-06-05 UTC.