{"id":1332,"date":"2023-01-27T07:09:31","date_gmt":"2023-01-27T07:09:31","guid":{"rendered":"https:\/\/cheapsslweb.com\/resources\/?p=1332"},"modified":"2025-12-15T07:39:24","modified_gmt":"2025-12-15T07:39:24","slug":"create-csr-for-wildcard-ssl","status":"publish","type":"post","link":"https:\/\/cheapsslweb.com\/resources\/create-csr-for-wildcard-ssl\/","title":{"rendered":"How to Create CSR for Wildcard SSL with OpenSSL Commands?"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">Wildcard SSL certificates secure one domain but have the added benefit of securing unlimited sub-domains. To generate every type of SSL certificate, users must generate a Certificate Signing Request (CSR).<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">To generate Wildcard SSL CSR, the first step is to install OpenSSL if it is not already on the system.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Let\u2019s go through the detailed process to figure out how to create CSR with Openssl for a Wildcard SSL certificate.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">What is Wildcard Certificate?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/cheapsslweb.com\/ssl-types\/cheap-wildcard-ssl-certificates\">Wildcard SSL certificates<\/a> are a cost-efficient option to secure a primary domain and its sub-domains. With one Wildcard SSL certificate, the users can <a href=\"https:\/\/cheapsslweb.com\/resources\/how-to-get-ssl-certificates-for-sub-domains\">secure unlimited sub-domains<\/a>. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">These certificates have a wildcard character (*) in the domain name. These subdomains are connected to the main domain. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">For instance, if you use one domain, www.example.com, with a Wildcard SSL certificate, it will also secure <strong>type1.example.com<\/strong>, <strong>type2.example.com<\/strong>, type3.example.com,&nbsp;and so on.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Steps to Create a Private Key Using OpenSSL Commands<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Before <span style=\"box-sizing: border-box; margin: 0px; padding: 0px;\"><strong>creating<\/strong><\/span> a<strong> CSR with Openssl<\/strong>, confirm that the openssl is installed on the system.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Also Read:<\/strong> <a href=\"https:\/\/cheapsslweb.com\/resources\/openssl-commands-quick-guide\">Basic OpenSSL Commands \u2013 Detailed Guide<\/a><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Steps To Install OpenSSL on Windows<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>OpenSSL website: <\/strong>Visit the <a href=\"https:\/\/slproweb.com\/products\/Win32OpenSSL.html\">official website<\/a> to download OpenSSL.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Follow the Steps: <\/strong>The next steps are simple to understand as they will take you through the process of installing Openssl on the system.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Set Environment Variables: <\/strong>After Openssl is installed, we need to set environment variables for the sessions.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>On this, run the following commands;<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>&gt;set OPENSSL_CONF=C:\\Program Files\\OpenSSL-Win64\\bin\\openssl.cfg\n&gt;set Path= C:\\Program Files\\OpenSSL-Win64\\bin<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Run OpenSSL: <\/strong>Lastly, hit Windows Key plus \u2018<strong>R<\/strong>\u2019 to open a command prompt and type \u2018<strong>cmd<\/strong>\u2019 to open a command prompt.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Steps To Install OpenSSL on Mac<\/h2>\n\n\n\n<ul start=\"1\" class=\"wp-block-list\">\n<li><strong>Open Homebrew: <\/strong>On Mac systems, open <strong>Homebrew <\/strong>and open the <strong>iTerminal<\/strong>.<\/li>\n\n\n\n<li><strong>Give Commands: <\/strong>Here, type in:<\/li>\n<\/ul>\n\n\n\n<pre class=\"wp-block-code\"><code>brew install OpenSSL<\/code><\/pre>\n\n\n\n<ul start=\"1\" class=\"wp-block-list\">\n<li><strong>Skip Update: <\/strong>At times, Homebrew can get stuck in the update. To skip it, type in:<\/li>\n<\/ul>\n\n\n\n<pre class=\"wp-block-code\"><code>HOMEBREW_NO_AUTO_UPDATE=1 brew install OpenSSL<\/code><\/pre>\n\n\n\n<ul start=\"1\" class=\"wp-block-list\"><\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">This will allow you to operate OpenSSL on Mac systems. Followed by this, we need to create Private Keys with OpenSSL.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The process to generate OpenSSL Wildcard certificates begins by creating a private key. This private key is required to secure the connection <a href=\"https:\/\/cheapsslweb.com\/resources\/server-certificate-vs-client-certificate\">between the client certificate and the server certificate<\/a>.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Steps To Generate a Private Key Using OpenSSL<\/h2>\n\n\n\n<pre class=\"wp-block-code\"><code>openssl genrsa -out rsa.private 1024<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">With one command, you will have a private key saved on the system with name \u201c<em><strong>rsa.private<\/strong>\u201d<\/em><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Steps to Create CSR for Wildcard SSL with OpenSSL <\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">OpenSSL is one of the most common methods to create Wildcard certificates<strong>. The process for this is simple enough to understand;<\/strong><\/p>\n\n\n\n<ul start=\"1\" class=\"wp-block-list\">\n<li><strong>Open Terminal: <\/strong>Begin by opening the OpenSSL terminal on a Windows or macOS system.<\/li>\n<\/ul>\n\n\n\n<ul start=\"2\" class=\"wp-block-list\">\n<li><strong>Enter Request: <\/strong><\/li>\n<\/ul>\n\n\n\n<pre class=\"wp-block-code\"><code><em>openssl req \u2013new \u2013newkey rsa:2048 \u2013nodes \u2013keyout server.key \u2013out server.csr<\/em><\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>After pressing Enter, you will be asked to enter the following details;<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Common Wildcard Name: <\/strong>Enter the complete domain name with an asterisk (*).<\/li>\n\n\n\n<li><strong>Country Name: <\/strong>Fill in a two-character code for your country. USA becomes US, India becomes IN,  etc.<\/li>\n\n\n\n<li><strong>State and Locality: <\/strong>Enter the name of the state you belong to, followed by the Locality or City name.<\/li>\n\n\n\n<li><strong>Name of the Organization: <\/strong>Enter the company name, which is the same as the domain name.<\/li>\n\n\n\n<li><strong>Organizational Unit: <\/strong>Next, enter the organizational section for the company. It can be the IT, Marketing, etc.<\/li>\n\n\n\n<li><strong>Enter the company Email Address<\/strong><\/li>\n\n\n\n<li>In the last section, leave the password blank.<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Hit Enter: <\/strong>In the last step, check all the details, and hit Enter. With this, you have created a CSR certificate.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Also Read:<\/strong> <a href=\"https:\/\/cheapsslweb.com\/resources\/how-to-install-a-wildcard-ssl-certificate-on-multiple-servers\">How to Install a Wildcard SSL Certificate on Multiple Servers?<\/a><\/p>\n\n\n\n<ol start=\"3\" style=\"list-style-type:1\" class=\"wp-block-list\"><\/ol>\n\n\n\n<h2 class=\"wp-block-heading\">Steps to Create Wildcard Certificate CSR in IIS 5,6,7<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Microsoft Internet Information Services (IIS) is a source to <strong>generate a Wildcard CSR<\/strong>. The following instructions will allow you to use IIS for this purpose;<\/p>\n\n\n\n<ul start=\"1\" class=\"wp-block-list\">\n<li><strong>Open IIS and Select Server: <\/strong>Open IIS Manager from the Control Panel\u2019s Administrative Tools. Select the server name (host); this is the host where you wish to generate the CSR.<\/li>\n<\/ul>\n\n\n\n<ul start=\"2\" class=\"wp-block-list\">\n<li><strong>Select New Certificate: <\/strong>Move to Server Certificates located in the Security section and click on Create Certificate Request.<\/li>\n<\/ul>\n\n\n\n<ul start=\"3\" class=\"wp-block-list\">\n<li><strong>Enter Details: <\/strong>In the next dialog box, enter the details for the Certificate, including Company Name, Organization, Organizational Unit, City\/Locality, State\/Province, and Country\/Region. At the time of entering the domain name, make sure to add an asterisk(*).<\/li>\n<\/ul>\n\n\n\n<ul start=\"4\" class=\"wp-block-list\">\n<li><strong>Security Details: <\/strong>In the dialog box, Cryptographic Service Provider Properties, Select <strong>Microsoft RSA SChannel Cryptographic Provider, <\/strong>and the Bit Length should be 2048 bit.<\/li>\n<\/ul>\n\n\n\n<ul start=\"5\" class=\"wp-block-list\">\n<li><strong>Save CSR and Generate Order: <\/strong>After completing the details, save the CSR on the hard drive with the .txt extension.<\/li>\n<\/ul>\n\n\n\n<ul start=\"6\" class=\"wp-block-list\">\n<li><strong>Generate Order: <\/strong>Open the text file and copy all the text. You need to paste the text in the Order Form with a prefix and suffix;<\/li>\n<\/ul>\n\n\n\n<pre class=\"wp-block-code\"><code><em>-----BEGIN CERTIFICATE REQUEST-----<\/em>\n<em>And<\/em>\n<em>-----END CERTIFICATE REQUEST-----<\/em><\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">Pay the requested amount to generate a Wildcard CSR and wait for the confirmation email.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Also Read:<\/strong> <a href=\"https:\/\/cheapsslweb.com\/resources\/how-to-install-wildcard-ssl-certificate-on-iis-7-or-8\">How to Install Wildcard SSL Certificate on IIS 7 or 8 Windows Server?<\/a><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Conclusion<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The <span style=\"box-sizing: border-box; margin: 0px; padding: 0px;\">Certificate Authority requires the\u00a0CSR form to issue the requested certificate. To create a CSR with OpenSSL, we must<\/span> employ a command prompt on Windows and iTerminal on macOS systems.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The CSR acts as a specific code for the website\u2019s SSL certificate and contains all the information a CA would need to verify and authenticate the website and its owner\u2019s details.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Wildcard SSL certificates secure one domain but have the added benefit of securing unlimited sub-domains. To generate every type of SSL certificate, users must generate a Certificate Signing Request (CSR). To generate Wildcard SSL CSR, the first step is to install OpenSSL if it is not already on the system. Let\u2019s go through the detailed<span class=\"morelink d-block mt-3\"><a href=\"https:\/\/cheapsslweb.com\/resources\/create-csr-for-wildcard-ssl\/\">Read More<\/a><\/span><\/p>\n","protected":false},"author":1,"featured_media":1348,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[67],"tags":[247,427,428],"class_list":["post-1332","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-wildcard-ssl-certificates","tag-create-csr-for-wildcard-ssl","tag-create-private-key-openssl","tag-wildcard-ssl-csr-openssl","entry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Create CSR &amp; Private Key for Wildcard SSL with OpenSSL<\/title>\n<meta name=\"description\" content=\"Trying to create a Wildcard SSL CSR using OpenSSL commands? 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