Bucket Encryption Made Easy: How to Upload and Download Encrypted Files to Your Object Storage
We now support SSE-C encryption for files in Object Storage. This new feature allows you to encrypt your files during upload.
Once a file has been uploaded with an encryption key, only the user who has that key can download and view the contents of the file.
Customers in data-sensitive markets will appreciate this new feature.
For this tutorial, we will use the AWS CLI to upload and download files.
Prerequisites:
- Install the AWS CLI
Step-by-step guide
- Create a bucket in the Cloud Panel or use an existing object store and make sure it has the appropriate access key.
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We will use an existing bucket for this tutorial. There is currently one file in this object store.
- Configure your AWS CLI
aws configure
AWS Access Key ID [****************FMF2]:
AWS Secret Access Key [****************G4Rm]:
Default region name [eu-central-1]:
Default output format [json]:
In turn, you will be asked to set the various parameters in your CLI so that it can access your bucket.
Note: You can find the secret of your access key in the corresponding tab in the Object Storage.
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- Verify that the S3API can access the bucket
aws s3api list-buckets --endpoint https://gos3.io
- Create an encrypted file
secret=$(echo $RANDOM | md5 | head -c 32)
key=$(echo -n $secret | base64)
key_md5=$(echo -n $secret | openssl dgst -md5 -binary | base64)
- Create a folder and a file
mkdir encryption
cd encryption
touch test.txt
- Upload the file you just created to your bucket
aws s3api --endpoint=https://gos3.io put-object \
--bucket my-first-bucket \
--key test.txt \
--sse-customer-algorithm AES256 \
--sse-customer-key $key \
--sse-customer-key-md5 $key_md5
You should now see the file in your bucket. Note that you cannot open encrypted items in the Cloud Panel.
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- Now download the file again
aws s3api --endpoint=https://gos3.io get-object \
--bucket my-first-bucket \
--key test.txt \
--sse-customer-algorithm AES256 \
--sse-customer-key $key \
--sse-customer-key-md5 $key_md5 test-
downloaded.txt
Important: Rename the file you want to download or the existing file will be overwritten.
- Verify that the download was successful
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If everything works, the downloaded file should show up in your folder.