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Nov 1, 2023 · The Common Name (CN), also known as the Fully Qualified Domain Name (FQDN), is the characteristic value within a Distinguished Name (DN). Typically, it is composed of Host Domain Name and looks like, "www.digicert.com" or "digicert.com".
Jan 29, 2024 · In this tutorial, we’ll learn about the common name and subject alternative name attributes in the X.509 certificate. Besides that, we’ll demonstrate the method for extracting those fields using the openssl command-line tool.
When a certificate, or an identity extracted from a certificate, is "shown" to a human user, the Common Name will figure proeminently. For instance, if using smart card logon on a Windows system, then the logon screen will show the Common Name in big letters when the smart card is inserted.
Sep 5, 2023 · An SSL certificate common name plays a vital role in ensuring website security by providing a secure connection between the site and its users. A properly configured security certificate can prevent unauthorized access, data breaches, and man-in-the-middle attacks, among other security threats.
As part of generating an SSL certificate you will be asked for the common name. The common name is the domain name you wish to secure with your certificate. If you are creating a single domain certificate, entering the common name is straightforward: it is the single domain you wish to secure.
Single vs Multi names. You can associate the host names to an SSL certificate using two different attributes: the Common Name. the Subject Alternative Name (SAN) The Common Name allows specifying a single entry (either a wildcard or single-name), whereas the SAN extension supports multiple entries.
An SSL certificate (more accurately called a TLS certificate), is necessary for a website to have HTTPS encryption. An SSL certificate contains the website's public key, the domain name it's issued for, the issuing certificate authority's digital signature, and other important information.
