{"id":6721,"date":"2025-09-02T02:19:54","date_gmt":"2025-09-02T02:19:54","guid":{"rendered":"https:\/\/unitconversion.io\/blog\/?p=6721"},"modified":"2025-09-02T02:25:47","modified_gmt":"2025-09-02T02:25:47","slug":"how-to-fix-error-gpg-failed-to-sign-the-data-error-in-git","status":"publish","type":"post","link":"https:\/\/unitconversion.io\/blog\/how-to-fix-error-gpg-failed-to-sign-the-data-error-in-git\/","title":{"rendered":"How to Fix \u201cError: Gpg Failed to Sign the Data\u201d Error in Git"},"content":{"rendered":"<p>You&#8217;re cruising through your Git workflow. Commit here, push there, life is good. Then\u2014bam!\u2014you get hit with this error:<\/p>\n<pre><code>error: gpg failed to sign the data\nfatal: failed to write commit object<\/code><\/pre>\n<p>What just happened? Don&#8217;t worry. This error might seem scary, like a dragon in your Git quest, but it&#8217;s actually easy to tame. Let&#8217;s break it down and solve it together.<\/p>\n<h2>\ud83c\udf1f What Does This Error Mean?<\/h2>\n<p>Git lets you sign your commits with GPG (GNU Privacy Guard). That signature says, \u201cI really wrote this code!\u201d It\u2019s great for open-source projects where identity matters.<\/p>\n<p>This error means Git tried to sign your commit but couldn\u2019t.<\/p>\n<p>Usually, this happens because:<\/p>\n<ul>\n<li>GPG isn\u2019t installed or set up properly<\/li>\n<li>Your key isn\u2019t available to Git<\/li>\n<li>Your GPG agent isn\u2019t running or can\u2019t access your key<\/li>\n<li>Your terminal can\u2019t prompt you for the passphrase<\/li>\n<\/ul>\n<p>No worries. We\u2019ll fix it in a few steps.<\/p>\n<h2>\ud83d\udee0\ufe0f Step-by-Step Fix Guide<\/h2>\n<h3>1. Is GPG Even Installed?<\/h3>\n<p>Let\u2019s start at the beginning. Check if GPG is on your system. Run:<\/p>\n<pre><code>gpg --version<\/code><\/pre>\n<p>If it returns the version info, you\u2019re good. If not, you need to install it.<\/p>\n<p><i>On macOS:<\/i><\/p>\n<pre><code>brew install gnupg<\/code><\/pre>\n<p><i>On Ubuntu\/Debian:<\/i><\/p>\n<pre><code>sudo apt update\nsudo apt install gnupg<\/code><\/pre>\n<p><i>On Windows:<\/i><\/p>\n<p>Use <a href=\"https:\/\/gpg4win.org\">GPG4Win<\/a>. Install and restart your terminal after.<\/p>\n<h3>2. Do You Have a GPG Key?<\/h3>\n<p>Check if you have any keys:<\/p>\n<pre><code>gpg --list-secret-keys --keyid-format LONG<\/code><\/pre>\n<p>If nothing shows up, you need to create one.<\/p>\n<pre><code>gpg --full-generate-key<\/code><\/pre>\n<p>Choose these options if prompted:<\/p>\n<ul>\n<li>Key type: RSA and RSA<\/li>\n<li>Key size: 4096 bits<\/li>\n<li>Expiry: Your choice (or none)<\/li>\n<li>Name and email: Use same email as your Git commits<\/li>\n<\/ul>\n<p>Once done, run this again to get your key:<\/p>\n<pre><code>gpg --list-secret-keys --keyid-format LONG<\/code><\/pre>\n<p>Look for a line that starts with:<\/p>\n<pre><code>sec   rsa4096\/XXXXXXXXXXXXXXXX<\/code><\/pre>\n<p>The part after the slash is your GPG <b>key ID<\/b>. Save it. You\u2019ll need it next.<\/p>\n<img loading=\"lazy\" decoding=\"async\" width=\"1080\" height=\"1618\" src=\"https:\/\/unitconversion.io\/blog\/wp-content\/uploads\/2025\/09\/black-and-silver-skeleton-key-gpg-key-terminal-list-keys-ssh-rsa.jpg\" class=\"attachment-full size-full\" alt=\"\" srcset=\"https:\/\/unitconversion.io\/blog\/wp-content\/uploads\/2025\/09\/black-and-silver-skeleton-key-gpg-key-terminal-list-keys-ssh-rsa.jpg 1080w, https:\/\/unitconversion.io\/blog\/wp-content\/uploads\/2025\/09\/black-and-silver-skeleton-key-gpg-key-terminal-list-keys-ssh-rsa-200x300.jpg 200w, https:\/\/unitconversion.io\/blog\/wp-content\/uploads\/2025\/09\/black-and-silver-skeleton-key-gpg-key-terminal-list-keys-ssh-rsa-684x1024.jpg 684w, https:\/\/unitconversion.io\/blog\/wp-content\/uploads\/2025\/09\/black-and-silver-skeleton-key-gpg-key-terminal-list-keys-ssh-rsa-768x1151.jpg 768w, https:\/\/unitconversion.io\/blog\/wp-content\/uploads\/2025\/09\/black-and-silver-skeleton-key-gpg-key-terminal-list-keys-ssh-rsa-1025x1536.jpg 1025w\" sizes=\"(max-width: 1080px) 100vw, 1080px\" \/>\n<h3>3. Tell Git About Your Key<\/h3>\n<p>Now link your Git config with your GPG key:<\/p>\n<pre><code>git config --global user.signingkey YOURKEYID<\/code><\/pre>\n<p>For example:<\/p>\n<pre><code>git config --global user.signingkey ABCD1234EFGH5678<\/code><\/pre>\n<h3>4. Enable Commit Signing (Optional)<\/h3>\n<p>You can tell Git to always sign your commits:<\/p>\n<pre><code>git config --global commit.gpgsign true<\/code><\/pre>\n<h3>5. Use the Right GPG Program<\/h3>\n<p>Sometimes Git can\u2019t find where GPG is installed. Let\u2019s make sure Git uses the correct program.<\/p>\n<p>Find GPG\u2019s path:<\/p>\n<pre><code>which gpg<\/code><\/pre>\n<p>Output may be like:<\/p>\n<pre><code>\/usr\/local\/bin\/gpg<\/code><\/pre>\n<p>Then run:<\/p>\n<pre><code>git config --global gpg.program \/usr\/local\/bin\/gpg<\/code><\/pre>\n<p>Easy fix, right?<\/p>\n<h3>6. What About GPG Agents?<\/h3>\n<p>This is a sneaky one. GPG uses an agent in the background to remember your passphrase. But sometimes it just&#8230; doesn\u2019t show up.<\/p>\n<p>Try restarting the agent:<\/p>\n<pre><code>gpgconf --kill gpg-agent\ngpgconf --launch gpg-agent<\/code><\/pre>\n<p>If you&#8217;re on the command line and not seeing a passphrase prompt, try setting this:<\/p>\n<pre><code>export GPG_TTY=$(tty)<\/code><\/pre>\n<p>You can add it to your shell config file (.bashrc, .zshrc, etc.):<\/p>\n<pre><code>echo \"export GPG_TTY=\\$(tty)\" &gt;&gt; ~\/.bashrc<\/code><\/pre>\n<p>Then restart your terminal or run:<\/p>\n<pre><code>source ~\/.bashrc<\/code><\/pre>\n<img loading=\"lazy\" decoding=\"async\" width=\"1080\" height=\"720\" src=\"https:\/\/unitconversion.io\/blog\/wp-content\/uploads\/2025\/09\/a-laptop-computer-sitting-on-top-of-a-wooden-desk-terminal-shell-bash-config-edit-prompt.jpg\" class=\"attachment-full size-full\" alt=\"\" srcset=\"https:\/\/unitconversion.io\/blog\/wp-content\/uploads\/2025\/09\/a-laptop-computer-sitting-on-top-of-a-wooden-desk-terminal-shell-bash-config-edit-prompt.jpg 1080w, https:\/\/unitconversion.io\/blog\/wp-content\/uploads\/2025\/09\/a-laptop-computer-sitting-on-top-of-a-wooden-desk-terminal-shell-bash-config-edit-prompt-300x200.jpg 300w, https:\/\/unitconversion.io\/blog\/wp-content\/uploads\/2025\/09\/a-laptop-computer-sitting-on-top-of-a-wooden-desk-terminal-shell-bash-config-edit-prompt-1024x683.jpg 1024w, https:\/\/unitconversion.io\/blog\/wp-content\/uploads\/2025\/09\/a-laptop-computer-sitting-on-top-of-a-wooden-desk-terminal-shell-bash-config-edit-prompt-768x512.jpg 768w\" sizes=\"(max-width: 1080px) 100vw, 1080px\" \/>\n<h2>\ud83d\udce6 Still Stuck?<\/h2>\n<p>Here are some more weird things that could be the problem and how to fix them:<\/p>\n<h3>1. Your GPG Key Isn\u2019t in Your GitHub or GitLab Profile<\/h3>\n<p>If you\u2019re pushing to GitHub and want it to show \u201cVerified\u201d on your commits:<\/p>\n<ol>\n<li>Run this command to copy your public key:<\/li>\n<\/ol>\n<pre><code>gpg --armor --export YOURKEYID<\/code><\/pre>\n<p>Copy the whole block that starts with <i>&#8212;&#8211;BEGIN PGP PUBLIC KEY BLOCK&#8212;&#8211;<\/i><\/p>\n<ol start=\"2\">\n<li>Go to GitHub &gt; Settings &gt; SSH and GPG Keys<\/li>\n<li>Add New GPG Key and paste it in<\/li>\n<\/ol>\n<p>Done!<\/p>\n<h3>2. Your Commit Email Doesn\u2019t Match<\/h3>\n<p>This matters for two reasons:<\/p>\n<ul>\n<li>Git uses the email in your commits<\/li>\n<li>Your GPG key is tied to an email<\/li>\n<\/ul>\n<p>Make sure they match! Check your Git email:<\/p>\n<pre><code>git config --global user.email<\/code><\/pre>\n<p>If needed, change it:<\/p>\n<pre><code>git config --global user.email \"you@example.com\"<\/code><\/pre>\n<h2>\ud83e\uddd9 Bonus: Using GPG with GUI Apps<\/h2>\n<p>GUI apps, like VS Code, may not use your configured terminal. That means they might not read your shell configs.<\/p>\n<p>Make sure they have access to your GPG environment. Starting them from the terminal helps!<\/p>\n<pre><code>code .<\/code><\/pre>\n<p>This way, they&#8217;ll inherit your terminal environment, including <code>GPG_TTY<\/code>.<\/p>\n<h2>\ud83d\udd25 What If You Just Want to Disable Signing?<\/h2>\n<p>Tired of it? Just want Git to stop asking for your GPG key?<\/p>\n<p>You can turn commit signing off with:<\/p>\n<pre><code>git config --global commit.gpgsign false<\/code><\/pre>\n<p>Or, if it&#8217;s only for one commit:<\/p>\n<pre><code>git commit --no-gpg-sign -m \"your message\"<\/code><\/pre>\n<p>Your call. It\u2019s your Git, after all.<\/p>\n<img loading=\"lazy\" decoding=\"async\" width=\"1080\" height=\"810\" src=\"https:\/\/unitconversion.io\/blog\/wp-content\/uploads\/2025\/09\/an-open-laptop-computer-sitting-on-top-of-a-table-git-commit-error-solution-keyboard-developer-laptop.jpg\" class=\"attachment-full size-full\" alt=\"\" srcset=\"https:\/\/unitconversion.io\/blog\/wp-content\/uploads\/2025\/09\/an-open-laptop-computer-sitting-on-top-of-a-table-git-commit-error-solution-keyboard-developer-laptop.jpg 1080w, https:\/\/unitconversion.io\/blog\/wp-content\/uploads\/2025\/09\/an-open-laptop-computer-sitting-on-top-of-a-table-git-commit-error-solution-keyboard-developer-laptop-300x225.jpg 300w, https:\/\/unitconversion.io\/blog\/wp-content\/uploads\/2025\/09\/an-open-laptop-computer-sitting-on-top-of-a-table-git-commit-error-solution-keyboard-developer-laptop-1024x768.jpg 1024w, https:\/\/unitconversion.io\/blog\/wp-content\/uploads\/2025\/09\/an-open-laptop-computer-sitting-on-top-of-a-table-git-commit-error-solution-keyboard-developer-laptop-768x576.jpg 768w\" sizes=\"(max-width: 1080px) 100vw, 1080px\" \/>\n<h2>\ud83c\udf89 Wrap-Up<\/h2>\n<p>The \u201cGPG failed to sign the data\u201d error usually means Git and GPG aren\u2019t playing nice. But with a few quick checks, you can get them back in sync.<\/p>\n<p>Here\u2019s a quick recap:<\/p>\n<ul>\n<li>Install GPG<\/li>\n<li>Create or find your GPG key<\/li>\n<li>Configure Git to use your key<\/li>\n<li>Fix any terminal or agent issues<\/li>\n<li>Add your public key to GitHub or GitLab (if you want verified commits)<\/li>\n<\/ul>\n<p>Now your commits are safe, signed, and stylish. \ud83c\udfa9<\/p>\n<p>Happy coding!<\/p>\n","protected":false},"excerpt":{"rendered":"<p>You&#8217;re cruising through your Git workflow. Commit here, push there, life is good. Then\u2014bam!\u2014you get hit with this error: <a href=\"https:\/\/unitconversion.io\/blog\/how-to-fix-error-gpg-failed-to-sign-the-data-error-in-git\/\" class=\"read-more\">Read more<\/a><\/p>\n","protected":false},"author":79,"featured_media":6722,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[665],"tags":[],"class_list":["post-6721","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","generate-columns","tablet-grid-50","mobile-grid-100","grid-parent","grid-50","no-featured-image-padding"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v23.4 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>How to Fix \u201cError: Gpg Failed to Sign the Data\u201d Error in Git - Unit Conversion Blog<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/unitconversion.io\/blog\/how-to-fix-error-gpg-failed-to-sign-the-data-error-in-git\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"How to Fix \u201cError: Gpg Failed to Sign the Data\u201d Error in Git - Unit Conversion Blog\" \/>\n<meta property=\"og:description\" content=\"You&#8217;re cruising through your Git workflow. 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Then\u2014bam!\u2014you get hit with this error: Read more\" \/>\n<meta property=\"og:url\" content=\"https:\/\/unitconversion.io\/blog\/how-to-fix-error-gpg-failed-to-sign-the-data-error-in-git\/\" \/>\n<meta property=\"og:site_name\" content=\"Unit Conversion Blog\" \/>\n<meta property=\"article:published_time\" content=\"2025-09-02T02:19:54+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2025-09-02T02:25:47+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/unitconversion.io\/blog\/wp-content\/uploads\/2025\/09\/keys-with-a-twin-towers-keychain-are-visible-gpg-key-terminal-list-keys-ssh-rsa.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1080\" \/>\n\t<meta property=\"og:image:height\" content=\"719\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Olivia Brown\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Olivia Brown\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"4 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/unitconversion.io\/blog\/how-to-fix-error-gpg-failed-to-sign-the-data-error-in-git\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/unitconversion.io\/blog\/how-to-fix-error-gpg-failed-to-sign-the-data-error-in-git\/\"},\"author\":{\"name\":\"Olivia Brown\",\"@id\":\"https:\/\/unitconversion.io\/blog\/#\/schema\/person\/4ea06b340c4660f4a04bd6d58c582b69\"},\"headline\":\"How to Fix \u201cError: Gpg Failed to Sign the Data\u201d Error in Git\",\"datePublished\":\"2025-09-02T02:19:54+00:00\",\"dateModified\":\"2025-09-02T02:25:47+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/unitconversion.io\/blog\/how-to-fix-error-gpg-failed-to-sign-the-data-error-in-git\/\"},\"wordCount\":743,\"publisher\":{\"@id\":\"https:\/\/unitconversion.io\/blog\/#organization\"},\"image\":{\"@id\":\"https:\/\/unitconversion.io\/blog\/how-to-fix-error-gpg-failed-to-sign-the-data-error-in-git\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/unitconversion.io\/blog\/wp-content\/uploads\/2025\/09\/keys-with-a-twin-towers-keychain-are-visible-gpg-key-terminal-list-keys-ssh-rsa.jpg\",\"articleSection\":[\"Blog\"],\"inLanguage\":\"en-US\"},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/unitconversion.io\/blog\/how-to-fix-error-gpg-failed-to-sign-the-data-error-in-git\/\",\"url\":\"https:\/\/unitconversion.io\/blog\/how-to-fix-error-gpg-failed-to-sign-the-data-error-in-git\/\",\"name\":\"How to Fix \u201cError: Gpg Failed to Sign the Data\u201d Error in Git - 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