{"id":4608,"date":"2025-12-04T07:17:36","date_gmt":"2025-12-04T07:17:36","guid":{"rendered":"https:\/\/signmycode.com\/resources\/?p=4608"},"modified":"2025-12-04T07:23:56","modified_gmt":"2025-12-04T07:23:56","slug":"what-is-ksp-library-how-to-configure-digicert-keylocker-ksp-library","status":"publish","type":"post","link":"https:\/\/signmycode.com\/resources\/what-is-ksp-library-how-to-configure-digicert-keylocker-ksp-library","title":{"rendered":"What is KSP Library? How to Configure DigiCert \u00ae KeyLocker KSP Library?"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">Every developer, at some point, faces that \u201cuh-oh\u201d moment when they need to sign code, authenticate drivers, or secure executables and suddenly encounter strange terms like KSP, HSM, or CNG.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Relax. You don\u2019t need to be a PKI expert to make it work.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">In this guide, we\u2019ll break down exactly what the DigiCert\u00ae KeyLocker KSP library is, why it matters, and how you can configure it.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">What Exactly Is the KSP Library?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>KSP stands for Key Storage Provider<\/strong>. Think of it as a secure vault built into Windows that holds your cryptographic keys, those secret pieces of data that power encryption and digital signatures.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Now, here\u2019s where DigiCert KeyLocker KSP comes into play.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">What is DigiCert KeyLocker KSP?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The DigiCert\u00ae KeyLocker KSP is a Microsoft CNG (Cryptography Next Generation) based client tool that lets you sign software without ever moving your actual files or keys around.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Instead of sending your entire file to a signing service, the KSP uses a hash-based signing process, meaning it signs a fingerprint (hash) of your file, not the file itself. That keeps your intellectual property safe and your signing workflow fast.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Why Should You Care About KSP?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">If you build or release software especially for Windows, you need to sign it.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Unsigned executables or installers often trigger scary <a href=\"https:\/\/signmycode.com\/resources\/unknown-publisher-warning-what-is-it-why-should-you-care\">Unknown Publisher Warnings<\/a> that kill user trust instantly.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Storing private keys locally (on your laptop or build server) is risky. One breach, one leak, and your entire software reputation could go down in flames.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">That\u2019s why DigiCert\u2019s KeyLocker KSP exists to give you cloud-level key protection while still integrating seamlessly with Windows signing tools.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">What Microsoft Tools Work with DigiCert\u00ae KeyLocker KSP?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">It will merge with all your preferred Windows signing software. KeyLocker KSP may be directly used with:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>SignTool &#8211;<\/strong> the utility to use when signing executables and scripts.<\/li>\n\n\n\n<li><strong>Mage &#8211;<\/strong> is used to <a href=\"https:\/\/signmycode.com\/resources\/how-to-sign-an-executable-in-visual-studio-2022\">sign ClickOnce application<\/a> manifests and deployment manifests.<\/li>\n\n\n\n<li><strong>NuGet &#8211;<\/strong> to sign NuGet package files in the .NET environments.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">All these can be done with your personal keys locked in the hardware-based KeyLocker platform of DigiCert. It is the way that developers today secure their <a href=\"https:\/\/signmycode.com\/blog\/what-is-software-supply-chain-security-comprehensive-guide\">software supply chain<\/a> end-to-end.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">What Can the KSP Sign?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Almost everything you can think of in the Microsoft ecosystem, including:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Executables (.exe)<\/li>\n\n\n\n<li>Installers (.msi)<\/li>\n\n\n\n<li>Application files<\/li>\n\n\n\n<li>Drivers<\/li>\n\n\n\n<li>Scripts (.ps1, .vbs)<\/li>\n\n\n\n<li>System images<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">If it\u2019s something you\u2019d normally sign to prove authenticity or prevent tampering, KSP can do that.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Recommended:<\/strong> <a href=\"https:\/\/signmycode.com\/resources\/how-to-sign-executables-using-digicert-keylocker-cloudhsm\">How to Sign Executables Using DigiCert KeyLocker CloudHSM?<\/a><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Steps to Configure KeyLocker KSP Library<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">Step 1: Download the DigiCert KeyLocker KSP Library<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">If you\u2019ve already installed the Windows Client Installer, congratulations, the KSP is already downloaded and registered for you.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>But if not, here\u2019s what to do:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Log in to your DigiCert KeyLocker portal<\/strong>.<\/li>\n\n\n\n<li>In the <strong>KeyLocker menu<\/strong>, <strong>go to Resources \u2192 Client Tool Repository<\/strong>.<\/li>\n\n\n\n<li>Find the <strong>latest KSP version<\/strong> that matches your OS.<\/li>\n\n\n\n<li><strong>Click the download<\/strong> icon.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Once downloaded, install it just like any other Windows application.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Step 2: Register the KSP Library<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Now let\u2019s get it recognised by Windows. Open Command Prompt (with admin privileges), <strong>then run:<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>smctl windows ksp register<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">This command registers the DigiCert KeyLocker KSP with Windows CryptoAPI.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Step 3: Check the KSP Installation<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">To make sure it is all configured properly, execute this command:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>certutil.exe -csp \u201cDigiCert Software Trust Manager KSP\u201d -key -user<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">This confirms that your system is capable of verifying successfully with the DigiCert KeyLocker service. In case it does not crash, congrats! Your KSP is up, and you can sign safely.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Step 4: Synchronise Certificates<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Now, for your signing tools to actually access the private keys (stored safely in KeyLocker), you\u2019ll need to sync your certificates to the local store.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Don\u2019t worry, this doesn\u2019t move your private key. It stays secure in DigiCert\u2019s cloud. You\u2019re just syncing the certificate metadata.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Run this command:<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>smctl windows certsync<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Then, open Certificate Manager to check:<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>certmgr.msc<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">Make sure you\u2019re viewing the correct user account. Each Windows account has its own certificate store. If you can see your certificate listed there, you\u2019re good to go.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Step 5: Start Signing<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Now comes the exciting part. Actually signing your files.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>For example, to sign an executable:<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>signtool sign \/n \"Your Certificate Name\" \/fd SHA256 \/tr http:\/\/timestamp.digicert.com \/td SHA256 yourapp.exe<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">Your signing request goes securely through the KSP library to DigiCert KeyLocker, signs the hash, and returns the signature.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Common Troubleshooting Tips<\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td><strong>Problem<\/strong> &nbsp;<\/td><td><strong>Fix<\/strong><\/td><\/tr><tr><td>KSP not detected &nbsp;<\/td><td>Re-run <code><strong>smctl<\/strong><\/code><code> <strong>windows ksp register<\/strong><\/code> and restart<\/td><\/tr><tr><td>No certificates visible<\/td><td>Run <code><strong>smctl windows certsync<\/strong><\/code> again, then check <code>certmgr.msc<\/code><\/td><\/tr><tr><td>Signing fails with permission error<\/td><td>Run your signing tool as Administrator<\/td><\/tr><tr><td>Using the wrong store<\/td><td>Make sure you\u2019re in the correct Windows user certificate store<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Why Developers and Enterprises Love KeyLocker KSP<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Zero Key Exposure \u2013<\/strong> Your private keys never leave DigiCert\u2019s secure environment.<\/li>\n\n\n\n<li><strong>Seamless Integration \u2013<\/strong> Works natively with Microsoft\u2019s trusted signing tools.<\/li>\n\n\n\n<li><strong>Access Controls \u2013<\/strong> Define who can sign what, and when.<\/li>\n\n\n\n<li><strong>Full Visibility \u2013<\/strong> Get complete audit trails of all signing operations.<\/li>\n\n\n\n<li><strong>Scalability \u2013<\/strong> Perfect for individual developers and large enterprises.<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Every developer, at some point, faces that \u201cuh-oh\u201d moment when they need to sign code, authenticate drivers, or secure executables and suddenly encounter strange terms like KSP, HSM, or CNG. Relax. You don\u2019t need to be a PKI expert to make it work. In this guide, we\u2019ll break down exactly what the DigiCert\u00ae KeyLocker KSP&hellip; <a class=\"more-link\" href=\"https:\/\/signmycode.com\/resources\/what-is-ksp-library-how-to-configure-digicert-keylocker-ksp-library\">Read More <span class=\"screen-reader-text\">What is KSP Library? How to Configure DigiCert \u00ae KeyLocker KSP Library?<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":4609,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[463],"tags":[630,629],"class_list":["post-4608","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-cloud-code-signing","tag-digicert-keylocker-ksp","tag-ksp-library","entry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.9 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>What is KSP Library? 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