# Cloud File Signer

This crate defines a generic interface for signing cloud object store URLs.

A presigned URL is a URL that grants temporary access to a file in a cloud object store. The URL is signed by the cloud provider and can be used to access the file without further authentication. 


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## Supported Object Stores

This crate provides an implementation of the `CloudFileSigner` trait for the following object stores.

| Object Store         | Status             |
|:--------------------:|:------------------:|
| Amazon S3            | :white_check_mark: |
| Azure Blob Storage   | :white_check_mark: |
| Google Cloud Storage | :white_check_mark: |