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class=md-nav__link> <span class=md-ellipsis> REST API🔗 </span> </a> </li> <li class=md-nav__item> <a href=#example-no-1-generate-header-values class=md-nav__link> <span class=md-ellipsis> Example No 1 Generate header values🔗 </span> </a> </li> <li class=md-nav__item> <a href=#example-no-2-aws-cli-s3api class=md-nav__link> <span class=md-ellipsis> Example No 2 aws-cli (s3api)🔗 </span> </a> </li> <li class=md-nav__item> <a href=#example-no-3-aws-cli-s3 class=md-nav__link> <span class=md-ellipsis> Example No 3 aws-cli (s3)🔗 </span> </a> </li> <li class=md-nav__item> <a href=#example-no-4-aws-cli-s3-blob class=md-nav__link> <span class=md-ellipsis> Example No 4 aws-cli (s3 blob)🔗 </span> </a> </li> <li class=md-nav__item> <a href=#downloading-the-encrypted-object class=md-nav__link> <span class=md-ellipsis> Downloading the encrypted object🔗 </span> </a> </li> </ul> </nav> </li> <li class=md-nav__item> <a 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href=Configuration-files-for-s3cmd-command-on-3Engines-Cloud.html.html class=md-nav__link> <span class=md-ellipsis> Configuration files for s3cmd command on 3Engines Cloud </span> </a> </li> <li class=md-nav__item> <a href=S3-bucket-object-versioning-on-3Engines-Cloud.html.html class=md-nav__link> <span class=md-ellipsis> S3 bucket object versioning on 3Engines Cloud </span> </a> </li> </ul> </nav> </li> <li class="md-nav__item md-nav__item--nested"> <input class="md-nav__toggle md-toggle " type=checkbox id=__nav_6> <label class=md-nav__link for=__nav_6 id=__nav_6_label tabindex=0> <span class=md-ellipsis> Windows </span> <span class="md-nav__icon md-icon"></span> </label> <nav class=md-nav data-md-level=1 aria-labelledby=__nav_6_label aria-expanded=false> <label class=md-nav__title for=__nav_6> <span class="md-nav__icon md-icon"></span> Windows </label> <ul class=md-nav__list data-md-scrollfix> <li class=md-nav__item> <a href=../windows/windows.html.html class=md-nav__link> <span class=md-ellipsis> Overview </span> </a> </li> <li class=md-nav__item> <a href=../windows/How-to-access-a-VM-from-Windows-PuTTY-on-3Engines-Cloud.html.html class=md-nav__link> <span class=md-ellipsis> How to access a VM from Windows PuTTY on 3Engines Cloud </span> </a> </li> <li class=md-nav__item> <a href=../windows/Connecting-to-a-Windows-VM-via-RDP-through-a-Linux-bastion-host-port-forwarding-on-3Engines-Cloud.html.html class=md-nav__link> <span class=md-ellipsis> Connecting to a Windows VM via RDP through a Linux bastion host port forwarding on 3Engines Cloud </span> </a> </li> <li class=md-nav__item> <a href=../windows/How-to-connect-to-a-virtual-machine-via-SSH-from-Windows-10-Command-Prompt-on-3Engines-Cloud.html.html class=md-nav__link> <span class=md-ellipsis> How to connect to a virtual machine via SSH from Windows 10 Command Prompt on 3Engines Cloud </span> </a> </li> <li class=md-nav__item> <a href=../windows/How-To-Create-SSH-Key-Pair-In-Windows-On-3Engines-Cloud.html.html class=md-nav__link> <span class=md-ellipsis> How to Create SSH Key Pair in Windows 10 On 3Engines Cloud </span> </a> </li> <li class=md-nav__item> <a href=../windows/Can-I-change-my-password-through-RDP-on-3Engines-Cloud.html.html class=md-nav__link> <span class=md-ellipsis> Can I change my password through RDP on 3Engines Cloud? </span> </a> </li> <li class=md-nav__item> <a href=../windows/How-To-Create-SSH-Key-Pair-In-Windows-11-On-3Engines-Cloud.html.html class=md-nav__link> <span class=md-ellipsis> How to Create SSH Key Pair in Windows 11 On 3Engines Cloud </span> </a> </li> </ul> </nav> </li> </ul> </nav> </div> </div> </div> <div class="md-sidebar md-sidebar--secondary" data-md-component=sidebar data-md-type=toc> <div class=md-sidebar__scrollwrap> <div class=md-sidebar__inner> <nav class="md-nav md-nav--secondary" aria-label="On this page"> <label class=md-nav__title for=__toc> <span class="md-nav__icon md-icon"></span> On this page </label> <ul class=md-nav__list data-md-component=toc data-md-scrollfix> <li class=md-nav__item> <a href=#introduction class=md-nav__link> <span class=md-ellipsis> Introduction🔗 </span> </a> </li> <li class=md-nav__item> <a href=#requirements class=md-nav__link> <span class=md-ellipsis> Requirements🔗 </span> </a> </li> <li class=md-nav__item> <a href=#rest-api class=md-nav__link> <span class=md-ellipsis> REST API🔗 </span> </a> </li> <li class=md-nav__item> <a href=#example-no-1-generate-header-values class=md-nav__link> <span class=md-ellipsis> Example No 1 Generate header values🔗 </span> </a> </li> <li class=md-nav__item> <a href=#example-no-2-aws-cli-s3api class=md-nav__link> <span class=md-ellipsis> Example No 2 aws-cli (s3api)🔗 </span> </a> </li> <li class=md-nav__item> <a href=#example-no-3-aws-cli-s3 class=md-nav__link> <span class=md-ellipsis> Example No 3 aws-cli (s3)🔗 </span> </a> </li> <li class=md-nav__item> <a href=#example-no-4-aws-cli-s3-blob class=md-nav__link> <span class=md-ellipsis> Example No 4 aws-cli (s3 blob)🔗 </span> </a> </li> <li class=md-nav__item> <a href=#downloading-the-encrypted-object class=md-nav__link> <span class=md-ellipsis> Downloading the encrypted object🔗 </span> </a> </li> </ul> </nav> </div> </div> </div> <div class=md-content data-md-component=content> <article class="md-content__inner md-typeset"> <h1 id=server-side-encryption-with-customer-managed-keys-sse-c-on-3engines-cloud>Server-Side Encryption with Customer-Managed Keys (SSE-C) on 3Engines Cloud<a href=#server-side-encryption-with-customer-managed-keys-sse-c-on-brand-name title="Permalink to this headline">🔗</a><a class=headerlink href=#server-side-encryption-with-customer-managed-keys-sse-c-on-3engines-cloud title="Permanent link">&para;</a></h1> <h2 id=introduction>Introduction<a href=#introduction title="Permalink to this headline">🔗</a><a class=headerlink href=#introduction title="Permanent link">&para;</a></h2> <p>This guide explains how to encrypt your objects server-side with SSE-C.</p> <p>Server-side encryption is a way to protecting data at rest. SSE encrypts only the object data. Using server-side encryption with customer-provided encryption keys (SSE-C) allows to set your own keys for encryption. Server manages the encryption as it writes to disks and decryption when you access your objects. The only thing that you must manage is to provide your own encryption keys.</p> <p>SSE-C is working as on the moment of uploading an object. Server uses the encryption key you provide to apply AES-256 encryption to data and removes the encryption key from memory. To access the data again you must provide the same encryption key on the request. Server verifies whether provided key matches and then decrypts the object before returning the object data to you.</p> <h2 id=requirements>Requirements<a href=#requirements title="Permalink to this headline">🔗</a><a class=headerlink href=#requirements title="Permanent link">&para;</a></h2> <ul> <li>A bucket (<a href=How-to-use-Object-Storage-on-3Engines-Cloud.html.html>How to use Object Storage on 3Engines Cloud</a>)</li> <li> <p>A user with the required access rights on the bucket</p> </li> <li> <p>EC2 credentials (<a href=../cloud/How-to-generate-ec2-credentials-on-3Engines-Cloud.html.html>How to generate and manage EC2 credentials on 3Engines Cloud</a>)</p> </li> <li>Have installed and configured aws</li> </ul> <p>If you have not used aws before:</p> <div class=highlight><pre><span></span><code><span id=__span-0-1><a id=__codelineno-0-1 name=__codelineno-0-1 href=#__codelineno-0-1></a>$ sudo apt install awscli
</span></code></pre></div> <p>Then:</p> <div class=highlight><pre><span></span><code><span id=__span-1-1><a id=__codelineno-1-1 name=__codelineno-1-1 href=#__codelineno-1-1></a>$ aws configure
</span><span id=__span-1-2><a id=__codelineno-1-2 name=__codelineno-1-2 href=#__codelineno-1-2></a>
</span><span id=__span-1-3><a id=__codelineno-1-3 name=__codelineno-1-3 href=#__codelineno-1-3></a>AWS Access Key ID [None]: &lt;your EC2 Access Key&gt;
</span><span id=__span-1-4><a id=__codelineno-1-4 name=__codelineno-1-4 href=#__codelineno-1-4></a>AWS Secret Access Key [None]: &lt;your EC2 Secret Key&gt;
</span><span id=__span-1-5><a id=__codelineno-1-5 name=__codelineno-1-5 href=#__codelineno-1-5></a>Default region name [None]: &lt;enter&gt;
</span><span id=__span-1-6><a id=__codelineno-1-6 name=__codelineno-1-6 href=#__codelineno-1-6></a>Default output format [None]: &lt;enter&gt;
</span></code></pre></div> <p><strong>SSE-C at a glance</strong></p> <blockquote> <ul> <li><em>Only HTTPS</em> S3 rejects any requests made over HTTP using SSE-C.</li> <li>If you send request erroneously using HTTP, for security you should discard the key and rotate as appropriate.</li> <li>The ETag in the response is not the MD5 of the object data.</li> <li>You are responsible for managing encryption keys and to which object they were used.</li> <li>If bucket is versioning-enabled, each object version can have its own encryption key.</li> </ul> </blockquote> <p>Attention</p> <p>If you lose encryption key it means the object is also lost. Our servers do not store encryption keys, so it is not possible to access the data again without them.</p> <h2 id=rest-api>REST API<a href=#rest-api title="Permalink to this headline">🔗</a><a class=headerlink href=#rest-api title="Permanent link">&para;</a></h2> <p>To encrypt or decrypt objects in SSE-C mode the following headers are required:</p> <table> <thead> <tr> <th>Header</th> <th>Type</th> <th>Description</th> </tr> </thead> <tbody> <tr> <td>x-amz-server-side-encryption-customer-algorithm</td> <td>string</td> <td>Encryption algorithm. Must be set to AES256</td> </tr> <tr> <td>x-amz-server-side-encryption-customer-key</td> <td>string</td> <td>256-bit base64-encoded encryption key used in the server-side encryption process</td> </tr> <tr> <td>x-amz-server-side-encryption-customer-key-MD5</td> <td>string</td> <td>base64-encoded 128-bit MD5 digest of the encryption key according to <a href=https://www.rfc-editor.org/rfc/rfc1321>RFC 1321</a>. It is used to ensure that the encryption has not been corrupted during transport and encoding process.</td> </tr> </tbody> </table> <p>Note</p> <p>MD5 digest of the key before base64 encoding.</p> <p>Headers apply to the following API operations:</p> <blockquote> <ul> <li>PutObject</li> <li>PostObject</li> <li>CopyObject (to target objects)</li> <li>HeadObject</li> <li>GetObject</li> <li>InitiateMultipartUpload</li> <li>UploadPart</li> <li>UploadPart-Copy (to target parts)</li> </ul> </blockquote> <h2 id=example-no-1-generate-header-values>Example No 1 Generate header values<a href=#example-no-1-generate-header-values title="Permalink to this headline">🔗</a><a class=headerlink href=#example-no-1-generate-header-values title="Permanent link">&para;</a></h2> <div class=highlight><pre><span></span><code><span id=__span-2-1><a id=__codelineno-2-1 name=__codelineno-2-1 href=#__codelineno-2-1></a>secret=&quot;32bytesOfTotallyRandomCharacters&quot;
</span><span id=__span-2-2><a id=__codelineno-2-2 name=__codelineno-2-2 href=#__codelineno-2-2></a>key=$(echo -n $secret | base64)
</span><span id=__span-2-3><a id=__codelineno-2-3 name=__codelineno-2-3 href=#__codelineno-2-3></a>keymd5=$(echo -n $secret | openssl dgst -md5 -binary | base64)
</span></code></pre></div> <p>OR</p> <div class=highlight><pre><span></span><code><span id=__span-3-1><a id=__codelineno-3-1 name=__codelineno-3-1 href=#__codelineno-3-1></a>openssl rand 32 &gt; sse-c.key
</span><span id=__span-3-2><a id=__codelineno-3-2 name=__codelineno-3-2 href=#__codelineno-3-2></a>key=$(cat sse-c.key | base64)
</span><span id=__span-3-3><a id=__codelineno-3-3 name=__codelineno-3-3 href=#__codelineno-3-3></a>keymd5=$(cat sse-c.key | openssl dgst -md5 -binary | base64)
</span></code></pre></div> <h2 id=example-no-2-aws-cli-s3api>Example No 2 aws-cli (s3api)<a href=#example-no-2-aws-cli-s3api title="Permalink to this headline">🔗</a><a class=headerlink href=#example-no-2-aws-cli-s3api title="Permanent link">&para;</a></h2> <p>Upload an object with SSE-C encryption enabled</p> <div class=highlight><pre><span></span><code><span id=__span-4-1><a id=__codelineno-4-1 name=__codelineno-4-1 href=#__codelineno-4-1></a>aws s3api put-object \
</span><span id=__span-4-2><a id=__codelineno-4-2 name=__codelineno-4-2 href=#__codelineno-4-2></a> --bucket bucket-name --key object-name \
</span><span id=__span-4-3><a id=__codelineno-4-3 name=__codelineno-4-3 href=#__codelineno-4-3></a> --body contents.txt \
</span><span id=__span-4-4><a id=__codelineno-4-4 name=__codelineno-4-4 href=#__codelineno-4-4></a> --sse-customer-algorithm AES256 \
</span><span id=__span-4-5><a id=__codelineno-4-5 name=__codelineno-4-5 href=#__codelineno-4-5></a> --sse-customer-key $key \
</span><span id=__span-4-6><a id=__codelineno-4-6 name=__codelineno-4-6 href=#__codelineno-4-6></a> --sse-customer-key-md5 $keymd5 \
</span><span id=__span-4-7><a id=__codelineno-4-7 name=__codelineno-4-7 href=#__codelineno-4-7></a> --endpoint-url https://s3.waw3-1.3Engines.com
</span></code></pre></div> <h2 id=example-no-3-aws-cli-s3>Example No 3 aws-cli (s3)<a href=#example-no-3-aws-cli-s3 title="Permalink to this headline">🔗</a><a class=headerlink href=#example-no-3-aws-cli-s3 title="Permanent link">&para;</a></h2> <div class=highlight><pre><span></span><code><span id=__span-5-1><a id=__codelineno-5-1 name=__codelineno-5-1 href=#__codelineno-5-1></a>aws s3 cp file.txt s3://bucket-name/ \
</span><span id=__span-5-2><a id=__codelineno-5-2 name=__codelineno-5-2 href=#__codelineno-5-2></a> --sse-c-key $secret \
</span><span id=__span-5-3><a id=__codelineno-5-3 name=__codelineno-5-3 href=#__codelineno-5-3></a> --sse-c AES256 \
</span><span id=__span-5-4><a id=__codelineno-5-4 name=__codelineno-5-4 href=#__codelineno-5-4></a> --endpoint https://s3.waw3-1.3Engines.com
</span></code></pre></div> <h2 id=example-no-4-aws-cli-s3-blob>Example No 4 aws-cli (s3 blob)<a href=#example-no-4-aws-cli-s3-blob title="Permalink to this headline">🔗</a><a class=headerlink href=#example-no-4-aws-cli-s3-blob title="Permanent link">&para;</a></h2> <div class=highlight><pre><span></span><code><span id=__span-6-1><a id=__codelineno-6-1 name=__codelineno-6-1 href=#__codelineno-6-1></a>aws s3 cp file.txt s3://bucket/ \
</span><span id=__span-6-2><a id=__codelineno-6-2 name=__codelineno-6-2 href=#__codelineno-6-2></a>--sse-c-key fileb://sse-c.key \
</span><span id=__span-6-3><a id=__codelineno-6-3 name=__codelineno-6-3 href=#__codelineno-6-3></a>--sse-c AES256 \
</span><span id=__span-6-4><a id=__codelineno-6-4 name=__codelineno-6-4 href=#__codelineno-6-4></a>--endpoint https://s3.waw3-1.3Engines.com
</span></code></pre></div> <p>Note</p> <p>At the moment <strong>s3cmd</strong> does not support SSE-C encryption.</p> <h2 id=downloading-the-encrypted-object>Downloading the encrypted object<a href=#downloading-the-encrypted-object title="Permalink to this headline">🔗</a><a class=headerlink href=#downloading-the-encrypted-object title="Permanent link">&para;</a></h2> <div class=highlight><pre><span></span><code><span id=__span-7-1><a id=__codelineno-7-1 name=__codelineno-7-1 href=#__codelineno-7-1></a>aws s3api get-object &lt;file_name&gt; --bucket &lt;bucket_name&gt; \
</span><span id=__span-7-2><a id=__codelineno-7-2 name=__codelineno-7-2 href=#__codelineno-7-2></a> --key &lt;object_key&gt; \
</span><span id=__span-7-3><a id=__codelineno-7-3 name=__codelineno-7-3 href=#__codelineno-7-3></a> --sse-customer-key $secret \
</span><span id=__span-7-4><a id=__codelineno-7-4 name=__codelineno-7-4 href=#__codelineno-7-4></a> --sse-customer-algorithm AES256 \
</span><span id=__span-7-5><a id=__codelineno-7-5 name=__codelineno-7-5 href=#__codelineno-7-5></a> --endpoint https://s3.waw3-1.3Engines.com
</span></code></pre></div> <p>or</p> <div class=highlight><pre><span></span><code><span id=__span-8-1><a id=__codelineno-8-1 name=__codelineno-8-1 href=#__codelineno-8-1></a>aws s3api get-object &lt;file_name&gt; --bucket &lt;bucket_name&gt; \
</span><span id=__span-8-2><a id=__codelineno-8-2 name=__codelineno-8-2 href=#__codelineno-8-2></a> --key &lt;object_key&gt; \
</span><span id=__span-8-3><a id=__codelineno-8-3 name=__codelineno-8-3 href=#__codelineno-8-3></a> --sse-customer-key fileb://&lt;key_name&gt; \
</span><span id=__span-8-4><a id=__codelineno-8-4 name=__codelineno-8-4 href=#__codelineno-8-4></a> --sse-customer-algorithm AES256 \
</span><span id=__span-8-5><a id=__codelineno-8-5 name=__codelineno-8-5 href=#__codelineno-8-5></a> --endpoint https://s3.waw3-1.3Engines.com
</span></code></pre></div> </article> </div> <script>var target=document.getElementById(location.hash.slice(1));target&&target.name&&(target.checked=target.name.startsWith("__tabbed_"))</script> </div> <button type=button class="md-top md-icon" data-md-component=top hidden> <svg xmlns=http://www.w3.org/2000/svg viewbox="0 0 24 24"><path d="M13 20h-2V8l-5.5 5.5-1.42-1.42L12 4.16l7.92 7.92-1.42 1.42L13 8z"/></svg> Back to top </button> </main> <footer class=md-footer> <nav class="md-footer__inner md-grid" aria-label=Footer> <a href=How-To-Install-boto3-In-Windows-on-3Engines-Cloud.html.html class="md-footer__link md-footer__link--prev" aria-label="Previous: How to Install Boto3 in Windows on 3Engines Cloud"> <div class="md-footer__button md-icon"> <svg xmlns=http://www.w3.org/2000/svg viewbox="0 0 24 24"><path d="M20 11v2H8l5.5 5.5-1.42 1.42L4.16 12l7.92-7.92L13.5 5.5 8 11z"/></svg> </div> <div class=md-footer__title> <span class=md-footer__direction> Previous </span> <div class=md-ellipsis> How to Install Boto3 in Windows on 3Engines Cloud </div> </div> </a> <a href=How-to-mount-object-storage-container-from-3Engines-Cloud-as-file-system-on-local-Windows-computer.html.html class="md-footer__link md-footer__link--next" aria-label="Next: How to mount object storage container from 3Engines Cloud as file system on local Windows computer"> <div class=md-footer__title> <span class=md-footer__direction> Next </span> <div class=md-ellipsis> How to mount object storage container from 3Engines Cloud as file system on local Windows computer </div> </div> <div class="md-footer__button md-icon"> <svg xmlns=http://www.w3.org/2000/svg viewbox="0 0 24 24"><path d="M4 11v2h12l-5.5 5.5 1.42 1.42L19.84 12l-7.92-7.92L10.5 5.5 16 11z"/></svg> </div> </a> </nav> <div class="md-footer-meta md-typeset"> <div class="md-footer-meta__inner md-grid"> <div class=md-copyright> Made with <a href=https://squidfunk.github.io/mkdocs-material/ target=_blank rel=noopener> Material for MkDocs </a> </div> </div> </div> </footer> </div> <div class=md-dialog data-md-component=dialog> <div class="md-dialog__inner md-typeset"></div> </div> <script id=__config type=application/json>{"base": "..", "features": ["content.code.annotate", "content.code.copy", "content.tooltips", "navigation.tabs", "navigation.sections", "navigation.footer", "navigation.indexes", "navigation.sections", "navigation.top", "navigation.tracking", "search.highlight", "search.share", "search.suggest", "toc.follow"], "search": "../assets/javascripts/workers/search.d50fe291.min.js", "tags": null, "translations": {"clipboard.copied": "Copied to clipboard", "clipboard.copy": "Copy to clipboard", "search.result.more.one": "1 more on this page", "search.result.more.other": "# more on this page", "search.result.none": "No matching documents", "search.result.one": "1 matching document", "search.result.other": "# matching documents", "search.result.placeholder": "Type to start searching", "search.result.term.missing": "Missing", "select.version": "Select version"}, "version": null}</script> <script src=../assets/javascripts/bundle.13a4f30d.min.js></script> <script id="init-glightbox">const lightbox = GLightbox({"touchNavigation": false, "loop": false, "zoomable": true, "draggable": true, "openEffect": "zoom", "closeEffect": "zoom", "slideEffect": "slide"});
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