{"id":2428,"date":"2022-04-05T16:25:34","date_gmt":"2022-04-05T16:25:34","guid":{"rendered":"https:\/\/web2.nextcloud.com\/?page_id=2428"},"modified":"2025-11-05T10:08:33","modified_gmt":"2025-11-05T09:08:33","slug":"encryption","status":"publish","type":"page","link":"https:\/\/nextcloud.com\/nl\/encryption\/","title":{"rendered":"Encryption"},"content":{"rendered":"

[vc_section el_class=”titlebar at_home noPaddingBottom” css=”.vc_custom_1680254490688{background-image: url(https:\/\/nextcloud.com\/wp-content\/uploads\/2023\/03\/binary-code-background.jpg?id=109598) !important;}”][vc_row content_placement=”middle”][vc_column width=”1\/2″][vc_empty_space][vc_column_text el_class=”page-title centerMobile”]<\/p>\n

Encryption
\nand hardening<\/h1>\n

[\/vc_column_text][vc_column_text css=”.vc_custom_1680248800491{margin-top: 2rem !important;margin-bottom: 2rem !important;}” el_class=”page-subtitle centerMobile”]Providing optimal security for your data and communication[\/vc_column_text][\/vc_column][vc_column width=”1\/2″][\/vc_column][\/vc_row][\/vc_section][vc_section el_class=”vertical-page-intro powerful_collaboration” css=”.vc_custom_1670420045995{padding-bottom: 0px !important;background-image: url(https:\/\/nextcloud.com\/wp-content\/uploads\/2022\/08\/nextcloud-logo-icon-light-bg.svg?id=53508) !important;}”][vc_row gap=”10″ content_placement=”middle” css=”.vc_custom_1663598629396{margin-bottom: 2rem !important;}”][vc_column width=”1\/4″][\/vc_column][vc_column width=”1\/2″][vc_column_text el_class=”nc_text_as_separator”]<\/p>\n

Encryption<\/p>\n

[\/vc_column_text][vc_column_text el_class=”intro-title nc-section-title”]<\/p>\n

Security is key for Nextcloud users<\/h2>\n

[\/vc_column_text][vc_separator color=”custom” border_width=”2″ el_width=”20″ el_class=”nc_separator_line”][vc_column_text]<\/p>\n

To protect your data, Nextcloud is designed with military-grade encryption and a
\nlarge number of advanced security protections for the highest degree of privacy and security. To support the admin, automated checks warn of security problems.[\/vc_column_text][\/vc_column][vc_column width=”1\/4″][\/vc_column][\/vc_row][vc_row gap=”25″ equal_height=”yes” el_class=”iconboxes” css=”.vc_custom_1680252689098{margin-top: 2rem !important;}”][vc_column width=”1\/3″ el_class=”iconbox with-btn”][vc_icon use_svg=”yes” icon_fontawesome=”” color=”custom” css=”” custom_color=”#0082c9″ svg_id=”342712″][vc_column_text el_class=”iconbox_title”]<\/p>\n

Encrypted data transfer<\/h4>\n

[\/vc_column_text][vc_column_text]Nextcloud employs industry-standard TLS to encrypt data in transfer. Usage of Object Storage like Amazon S3 or other external storage systems can be secured through Server Side Encryption.[\/vc_column_text][\/vc_column][vc_column width=”1\/3″ el_class=”iconbox with-btn”][vc_icon use_svg=”yes” icon_fontawesome=”” color=”custom” css=”” custom_color=”#0082c9″ svg_id=”342712″][vc_column_text el_class=”iconbox_title”]<\/p>\n

Encrypt data at rest<\/h4>\n

[\/vc_column_text][vc_column_text]Server Side Encryption can also be used on local storage. However, inherent to the concept of server side encryption, encryption keys will be present in memory of the Nextcloud server during the time a user is logged in and could be retrieved by a determined attacker. We take care to ensure keys are not stored unencrypted on permanent storage and at rest keys are encrypted using a strong cipher.[\/vc_column_text][\/vc_column][vc_column width=”1\/3″ el_class=”iconbox”][vc_icon use_svg=”yes” icon_fontawesome=”” color=”custom” css=”” custom_color=”#0082c9″ svg_id=”342712″][vc_column_text el_class=”iconbox_title”]<\/p>\n

Encrypt from client to client<\/h4>\n

[\/vc_column_text][vc_column_text]End-to-end Encryption client-side is available from Nextcloud desktop client 3.0 and newer as a folder-level option to keep extremely sensitive data fully secure even in case of a full server breach. The server facilitates key exchange for syncing between devices and sharing but has Zero Knowledge, that is, never has access to any of the data or keys in unencrypted form.[\/vc_column_text][\/vc_column][\/vc_row][\/vc_section][vc_section disable_element=”yes” el_class=”nc_default_section” css=”.vc_custom_1680518914423{margin-top: 0px !important;margin-bottom: 0px !important;}”][vc_row gap=”30″ content_placement=”middle”][vc_column width=”1\/2″][vc_single_image image=”109384″ img_size=”full” alignment=”center” onclick=”link_image” el_class=”imageRoundShadow”][\/vc_column][vc_column width=”1\/2″ el_class=”centerMobile”][vc_column_text el_class=”nc-section-title”]<\/p>\n

Multi-layered encryption<\/h2>\n

[\/vc_column_text][vc_separator color=”custom” align=”align_left” border_width=”2″ el_width=”20″ el_class=”nc_separator_line”][vc_column_text css=”.vc_custom_1680511639601{margin-top: 1.5rem !important;margin-bottom: 1.5rem !important;}”]Nextcloud uses industry-standard SSL\/TLS encryption for data in transfer. Additionally, data at rest in storage can be encrypted using a default military grade AES-256 encryption with server-based or custom key management. Also optionally and on a per-folder base data can be end-to-end encrypted on the client with the server assisting in sharing and key management using a Zero-Knowledge model.[\/vc_column_text][\/vc_column][\/vc_row][\/vc_section][vc_section el_class=”nc_default_section” css=”.vc_custom_1680507810247{margin-top: 0px !important;margin-bottom: 0px !important;}”][vc_row gap=”30″ content_placement=”middle”][vc_column width=”1\/2″ el_class=”text-right centerMobile”][vc_column_text el_class=”nc-section-title”]<\/p>\n

Threat models
\nand attack trees<\/h2>\n

[\/vc_column_text][vc_separator color=”custom” align=”align_right” border_width=”2″ el_width=”20″ el_class=”nc_separator_line”][vc_column_text css=”.vc_custom_1695730922055{margin-top: 1.5rem !important;margin-bottom: 1.5rem !important;}”]There is a number of important decisions to be made about encryption in Nextcloud. The various solutions come with advantages and downsides. Read our blog linked below to find out more about the properties of each solution.[\/vc_column_text][vc_btn title=”Encryption in Nextcloud” align=”right” link=”url:https%3A%2F%2Fnextcloud.com%2Fblog%2Fencryption-in-nextcloud%2F” el_class=”btn-main”][\/vc_column][vc_column width=”1\/2″][vc_single_image image=”110130″ img_size=”full” alignment=”center”][\/vc_column][\/vc_row][\/vc_section][vc_section el_class=”nc_default_section lightBG” css=”.vc_custom_1680255125947{margin-top: 0px !important;margin-bottom: 0px !important;}”][vc_row gap=”30″ content_placement=”middle”][vc_column][vc_column_text el_class=”nc-section-title”]<\/p>\n

Seamless end-to-end
\nencryption on the clients<\/h2>\n

[\/vc_column_text][\/vc_column][vc_column width=”1\/2″][vc_single_image image=”257784″ img_size=”full” alignment=”center” onclick=”link_image” css=””][\/vc_column][vc_column width=”1\/2″ el_class=”centerMobile”][vc_column_text]Nextcloud features an enterprise-grade, seamlessly integrated solution for end-to-end encryption. It enables users to pick one or more folders on their desktop or mobile client for end-to-end encryption. Folders can be shared with other users and synced between devices but are never readable by the server.<\/p>\n

This solution is easy to use yet extremely secure thanks to its Zero-Knowledge server design and Cryptographic Identity Protection. It does not compromise security by using a browser to encrypt or decrypt files with code coming from the server and is not an all-or-nothing affair: any number of folders can be end-to-end encrypted. Sharing is secure without a need to exchange passwords and files don\u2019t need to be re-encrypted and re-uploaded when access rights for other users are changed.[\/vc_column_text][\/vc_column][vc_column][vc_column_text el_class=”section_short_desc”]<\/p>\n

Our solution is enterprise ready with access to a full audit log and optionally allowing administrators to create an offline master recovery key. Contact us if you are interested in additional capabilities like support for a Hardware Security Module for issuing certificates<\/p>\n

[\/vc_column_text][vc_btn title=”Learn more” align=”center” link=”url:https%3A%2F%2Fnextcloud.com%2Fblog%2Fproduction-ready-end-to-end-encryption-and-new-user-interface-arrive-with-nextcloud-desktop-client-3-0%2F” el_class=”btn-main”][\/vc_column][\/vc_row][vc_row gap=”25″ content_placement=”middle”][vc_column width=”1\/2″ el_class=”text-right”][vc_column_text css=”.vc_custom_1680252887427{margin-bottom: 1.5rem !important;}” el_class=”nc-section-title”]<\/p>\n

E2EE file sharing<\/h2>\n

[\/vc_column_text][vc_column_text]<\/p>\n

Before, after picking a folder for end-to-end encryption, users could work in this folder and access it from all their clients, mobile and desktop, but not share it. It is now possible for the HR team to share their folders with confidential dossiers with each other!<\/p>\n

[\/vc_column_text][\/vc_column][vc_column width=”1\/2″][vc_single_image image=”107166″ img_size=”full” alignment=”center”][\/vc_column][\/vc_row][vc_row gap=”25″ content_placement=”middle” css=”.vc_custom_1680253031040{margin-top: 3rem !important;}”][vc_column width=”1\/2″][vc_single_image image=”106802″ img_size=”full” alignment=”center”][\/vc_column][vc_column width=”1\/2″][vc_column_text css=”.vc_custom_1680252930696{margin-bottom: 1.5rem !important;}” el_class=”nc-section-title”]<\/p>\n

E2EE file drop<\/h2>\n

[\/vc_column_text][vc_column_text css=””]File Drop now includes the option to upload files to End-to-End Encrypted folders for increased security in your organization.
\nReceive confidential files in a secure, trustworthy way without worrying about breaches. It\u2019s simple, secure and a no fuss file exchange.
\nGoing back to the HR department \u2013 the team can now send job applicants a link where they can securely upload their resume\u2019s directly in an end-to-end encrypted folder, shared in the HR team.<\/p>\n

[\/vc_column_text][vc_btn title=”More about File Drop” css=”” link=”url:https%3A%2F%2Fnextcloud.com%2Ffeatures%2F%23file-drop|target:_blank” el_class=”btn-main”][\/vc_column][\/vc_row][\/vc_section][vc_section el_class=”case-studies” css=”.vc_custom_1661342708680{padding-top: 4rem !important;padding-bottom: 4rem !important;}”][vc_row][vc_column][vc_column_text el_class=”nc-section-title”]<\/p>\n

Encryption case studies<\/h2>\n

[\/vc_column_text][vc_separator color=”custom” border_width=”2″ el_width=”20″ el_class=”nc_separator_line”][\/vc_column][\/vc_row][vc_row equal_height=”yes” el_class=”case_studies centered”][vc_column width=”1\/2″ el_class=”case_study” offset=”vc_col-lg-4 vc_col-md-4″][vc_single_image image=”109645″ img_size=”full” onclick=”custom_link” css=”” el_class=”image_top” link=”\/blog\/whitepapers\/server-side-encryption\/”][vc_column_text el_class=”organization”]<\/p>\n

Server-side encryption<\/h4>\n

[\/vc_column_text][vc_column_text el_class=”quote”]Nextcloud features server-side encryption to encrypt data at rest. It is particularly powerful when used with external storage as it ensures keys never leave the Nextcloud server.[\/vc_column_text][vc_btn title=”Download our free whitepaper” align=”center” i_align=”right” i_icon_fontawesome=”fas fa-angle-right” add_icon=”true” el_class=”btn-main btn-small” link=”url:https%3A%2F%2Fnextcloud.com%2Fblog%2Fwhitepapers%2Fserver-side-encryption%2F”][\/vc_column][vc_column width=”1\/2″ el_class=”case_study” offset=”vc_col-lg-4 vc_col-md-4″][vc_single_image image=”109640″ img_size=”full” onclick=”custom_link” el_class=”image_top” link=”\/blog\/whitepapers\/end-to-end-encryption\/”][vc_column_text el_class=”organization”]<\/p>\n

End-to-end encryption<\/h4>\n

[\/vc_column_text][vc_column_text el_class=”quote”]With the announcement of the Nextcloud end-to-end encryption techpreview, we\u2019d like to invite you to scrutinize our source code and cryptographic approach in this whitepaper.[\/vc_column_text][vc_btn title=”Download our free whitepaper” align=”center” i_align=”right” i_icon_fontawesome=”fas fa-angle-right” add_icon=”true” el_class=”btn-main btn-small” link=”url:https%3A%2F%2Fnextcloud.com%2Fblog%2Fwhitepapers%2Fend-to-end-encryption%2F”][\/vc_column][\/vc_row][\/vc_section][vc_section el_class=”nc_default_section” css=”.vc_custom_1670241885307{margin-top: 0px !important;margin-bottom: 0px !important;}”][vc_row gap=”30″ content_placement=”middle”][vc_column width=”1\/2″][vc_single_image image=”110669″ img_size=”large” alignment=”center”][\/vc_column][vc_column width=”1\/2″ el_class=”centerMobile”][vc_column_text el_class=”nc-section-title”]<\/p>\n

Server-side encryption with flexible key handling<\/h2>\n

[\/vc_column_text][vc_column_text]Nextcloud supports pluggable encryption key handling. If you have an external key server or Hardware Security Module, these can be made to work with Nextcloud.<\/p>\n

Our default encryption key handling enables administrators to set a system wide recovery key for encrypted files,. This ensures that, even when users lose their password, files can always be decrypted. Encrypted files can be shared but after changing encryption settings, shares will have to be re-shared. Using our command line tools, data can be encrypted, decrypted or re-encrypted when needed.<\/p>\n

If you face a regulatory or compliance need to encrypt data at rest but do not need to actually secure this data, locally encrypting data using our built in key management may satisfy compliance requirements.[\/vc_column_text][vc_btn title=”Learn more” link=”url:https%3A%2F%2Fdocs.nextcloud.com%2Fserver%2Flatest%2Fadmin_manual%2Fconfiguration_files%2Fencryption_configuration.html|target:_blank” el_class=”btn-main”][\/vc_column][\/vc_row][\/vc_section][vc_section el_id=”cta-contact” el_class=”cta-contact nc-section-gradient-bg white-text” css=”.vc_custom_1663589051447{padding-top: 3rem !important;padding-bottom: 3rem !important;}”][vc_row content_placement=”middle”][vc_column width=”3\/5″ el_class=”text-right”][vc_column_text el_class=”nc-section-title”]<\/p>\n

Need the best security?<\/h2>\n

[\/vc_column_text][vc_column_text css=”.vc_custom_1680270870721{margin-bottom: 0px !important;}”]Nextcloud Enterprise provides early access to security warnings, updates and mitigations. Nextcloud enables you to focus on your work, taking care that your data stays private
\nand completely under your control![\/vc_column_text][\/vc_column][vc_column width=”2\/5″ el_class=”cta_buttons”][vc_btn use_svg_icon=”yes” title=”Request a quote” align=”left” i_icon_fontawesome=”” css=”” add_icon=”true” el_class=”btn-white” link=”url:%2Fget-a-quote%2F|title:Request%20a%20quote” svg_icon_id=”342845″][vc_btn use_svg_icon=”yes” title=”Contact us” align=”left” i_icon_fontawesome=”” css=”” add_icon=”true” el_class=”btn-white-outline” link=”url:%2Fcontact%2F|title:Contact%20us” svg_icon_id=”342801″][vc_btn use_svg_icon=”yes” title=”Newsletter” align=”left” i_icon_fontawesome=”” css=”.vc_custom_1762333711124{margin-bottom: 0px !important;}” add_icon=”true” el_class=”btn-white-outline” link=”url:https%3A%2F%2Fnextcloud.com%2Fnewsletter%2F” svg_icon_id=”342717″][\/vc_column][\/vc_row][\/vc_section]<\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"

[vc_section el_class=”titlebar at_home noPaddingBottom” css=”.vc_custom_1680254490688{background-image: url(https:\/\/nextcloud.com\/wp-content\/uploads\/2023\/03\/binary-code-background.jpg?id=109598) !important;}”][vc_row content_placement=”middle”][vc_column width=”1\/2″][vc_empty_space][vc_column_text el_class=”page-title centerMobile”] Encryption and hardening [\/vc_column_text][vc_column_text css=”.vc_custom_1680248800491{margin-top: 2rem !important;margin-bottom: 2rem !important;}” el_class=”page-subtitle centerMobile”]Providing optimal security for your data and communication[\/vc_column_text][\/vc_column][vc_column width=”1\/2″][\/vc_column][\/vc_row][\/vc_section][vc_section el_class=”vertical-page-intro powerful_collaboration” css=”.vc_custom_1670420045995{padding-bottom: 0px !important;background-image: url(https:\/\/nextcloud.com\/wp-content\/uploads\/2022\/08\/nextcloud-logo-icon-light-bg.svg?id=53508) !important;}”][vc_row gap=”10″ content_placement=”middle” 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