{"id":40824,"date":"2024-06-12T09:23:23","date_gmt":"2024-06-12T14:23:23","guid":{"rendered":"https:\/\/dayoneapp.com\/?post_type=help_guides&#038;p=40824"},"modified":"2025-09-26T09:15:34","modified_gmt":"2025-09-26T14:15:34","slug":"finding-a-lost-encryption-key","status":"publish","type":"help_guides","link":"https:\/\/dayoneapp.com\/guides\/troubleshooting\/finding-a-lost-encryption-key\/","title":{"rendered":"Finding a Lost Encryption Key"},"content":{"rendered":"\n<p>Your personal encryption key is vital for the app&#8217;s ability to sync and decrypt your information. Your key is used for all templates and all end-to-end encrypted Journals. <\/p>\n\n\n\n<p>Because your unique key is what makes sure you&#8217;re the only one who can read your content, Day One does not have access to a copy of your key. While we don&#8217;t have a copy of your key, we do keep a record when you save your key, so if you provide us with your <a href=\"https:\/\/dayoneapp.com\/guides\/settings\/day-one-user-id\/\">user ID<\/a>, we can check whether you have previously saved your key and point you in the right direction to find it.<\/p>\n\n\n\n<p>If you&#8217;re not sure if you have a key, you can look for it in the app in the following places:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>iOS: Day One &gt; Settings &gt; Sync &gt; Encryption Key<\/li>\n\n\n\n<li>Mac: Day One &gt; Settings &gt; Sync &gt; Advanced &gt; View Encryption Key<\/li>\n\n\n\n<li>Android: Day One &gt; Settings &gt; Sync &gt; Encryption Key<\/li>\n\n\n\n<li>Web: Day One &gt; Settings &gt; Account &gt; Encryption Key<\/li>\n<\/ul>\n\n\n\n<p>If you don&#8217;t see your key here, we do offer other options for places it may be saved, depending on the platform you&#8217;re using.<\/p>\n\n\n\n<p>To help you save your key, we give you the options to save your Key:<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-ios-encryption-key-backup-options\">iOS Encryption Key Backup Options<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Backup to Google Drive<\/li>\n\n\n\n<li>Backup to iCloud<\/li>\n\n\n\n<li>Send to Email Address<\/li>\n\n\n\n<li>Print<\/li>\n\n\n\n<li>Copy <\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-android-encryption-key-backup-options\">Android Encryption Key Backup Options<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Backup to Google Drive<\/li>\n\n\n\n<li>Backup to iCloud<\/li>\n\n\n\n<li>Send to Email Address<\/li>\n\n\n\n<li>Print<\/li>\n\n\n\n<li>Copy <\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-mac-encryption-key-backup-options\">Mac Encryption Key Backup Options<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Save to iCloud<\/li>\n\n\n\n<li>Save as PDF to Disk<\/li>\n\n\n\n<li>Print<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-web-encryption-key-backup-options\">Web Encryption Key Backup Options<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Save to Google Drive<\/li>\n\n\n\n<li>Save to iCloud<\/li>\n\n\n\n<li>Download PDF<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-searching-for-a-downloaded-key\">Searching for a downloaded key<\/h2>\n\n\n\n<p>If you downloaded a PDF backup of your encryption key, you can search the file system on your device\/computer for the default filename:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Web\/Windows: <code>Day One Master Key Backup.pdf<\/code><\/li>\n\n\n\n<li>iOS: <code>DayOneMasterKey.pdf<\/code><\/li>\n\n\n\n<li>macOS\/Android: <code>DayOneKey.pdf<\/code><\/li>\n<\/ul>\n\n\n\n<p>Note that it&#8217;s possible to edit the filename when downloading the key, so these default filenames may not match if you saved the key under a different name.<\/p>\n\n\n\n<p>To verify the Encryption Key is correct for your account, the first batch of numbers after D1 should match your <a href=\"https:\/\/dayoneapp.com\/guides\/settings\/day-one-user-id\/\">User ID<\/a>.<\/p>\n\n\n\n<p>Because your key is vital to making sure you&#8217;re the only one who can read your content, Day One does not have a copy of your key. This means it&#8217;s up to you to keep a copy of the key.<\/p>\n\n\n\n<p>If you still can&#8217;t find your key after checking all possible places, please <a href=\"https:\/\/dayoneapp.com\/guides\/troubleshooting\/getting-a-new-encryption-key\/\">follow our guide to generate a new one<\/a>.<\/p>\n\n\n\n<p><strong>Important:<\/strong> Never share your encryption key with anyone else, even when using shared journals.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Your personal encryption key is vital for the app&#8217;s ability to sync and decrypt your information. Your key is used for all templates and all end-to-end encrypted Journals. Because your unique key is what makes sure you&#8217;re the only one who can read your content, Day One does not have access to a copy of [&hellip;]<\/p>\n","protected":false},"author":62,"featured_media":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_kad_blocks_custom_css":"","_kad_blocks_head_custom_js":"","_kad_blocks_body_custom_js":"","_kad_blocks_footer_custom_js":"","_hide_page_title":false,"jetpack_post_was_ever_published":false,"footnotes":""},"guides_category":[27],"coauthors":[144],"class_list":["post-40824","help_guides","type-help_guides","status-publish","hentry","guides_category-troubleshooting"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v26.5 (Yoast SEO v26.6) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Finding a Lost Encryption Key<\/title>\n<meta name=\"description\" content=\"Your personal encryption key is vital for the app&#039;s ability to sync and decrypt your information. 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