Issuance of Public Certificates


In this article, we will discuss the Common format of a public certificate, Common names, Signature algorithm, and Revocation. By the end of this article, you should be well-versed in the different aspects of public certificates. The following sections will be helpful when you want to obtain a certificate. Then, you can start applying the required steps to obtain your certificate. You can also use our certificate generator to generate your own public certificate.

Common format for a public certificate

The most popular file format for a public certificate is a P7B file. P7B files are stored in the PKCS number twelve format and can store different types of certificates. The most common uses for P12 files are to store a private key and the certificate. This file is password-protected and can also be used to import and export certificates. P7B files are also used for code-signing certificates.

The PEM format is one of the most common certificate formats. The extension of a PEM certificate is either.pem,.crt, or.cer. This file type contains “BEGIN CERTIFICATE” and can contain intermediate certificates and private keys. PKCS12 format is preferred when exchanging certificates containing private keys. But if you have your own private key, you’ll need a different format for your public certificate.
Common names

The common name for a public certificate is its subject. This name should match the hostname on the certificate. The subject field must also identify the server’s primary name, which is commonly referred to as the subject of the certificate. Some certificates may have multiple host names, in which case they are known as a Subject Alternative Name (SAN) certificate or a Unified Communications Certificate (UCC). To keep backward compatibility, many CAs put the subject alternative name in the Subject Common Name field, and some issue wildcard certificates that use a generic host name.

There are two types of common names for SSL and TLS certificates. The first is the common name, which is the primary domain of the certificate. The other is the Subject Alternative Name, which can be one or more fully qualified domain names. The latter is often referred to as a multi-domain SSL/TLS certificate, and secures multiple fully qualified domain names. While most SSL certificates only have one common name, the subject alternative name is allowed to contain many more.
Signature algorithm

To create a digital signature, you will need to generate a public key and a private key pair. In OpenSSL, the process involves using two separate commands to generate key pairs. These pairs are encoded in base64, and you can specify the sizes of these keys during the process. The private key contains two numeric values: a modulus and an exponent. The public key is the part of the signature that is used to verify the validity of the document.

The signature algorithm for a public certificate is the method of verifying the authenticity of the certificate issued by the issuer. The signature algorithm used by the issuer is a way of proving that the claimed issuer is indeed the same person as the public key contained within the certificate. Once verified, a trusted chain can be built to locally trust the certificate. The issuers public key is included inside the certificate, and the RSA public key is present in the certificate.


If your company is implementing a PKI, you must understand the process of issuing and revocation of certificates. This article focuses on the basics of the procedure. If you’ve recently installed an enterprise CA, you may want to read the following section first. Once you’ve done this, it’s easy to revoke public certificates. Here’s how to do this.

Revocation of a certificate means canceling an HTTPS connection from an owner’s domain. In most cases, the revocation process occurs when the private key is compromised and the certificate is no longer secure. To revoke a certificate, you can use the Certificate Manager agents. To revoke an end-entity certificate, you can use the Certificate Manager’s agent service. Revocation requests are reflected in the next CRL.

Shorter-lived certificates

Short-lived public certificates are a way for websites to secure their content. However, short-lived certificates require sophisticated automation, frequent reissuance, and a partnership with an issuing CA. The problem of short-lived certificates is particularly acute for large websites and high-performance sites, which require a balance between privacy and security. In such cases, short-lived certificates are more likely to be used.

Although some sites may complain that the shorter certificate life is a pain, they should remember that the benefits of a short-lived certificate outweigh the potential security risks. While some CAs actively promote the use of longer certificates, a few major issues are a concern. However, while the emergence of shorter-lived certificates has triggered a new round of revocations, the new policy makes the certificates much safer for both websites and their customers.

Privacy issues with OCSP stapling

OCSP stapling has several privacy issues. Browsers that do not support OCSP are unable to implement it on the web. This is because OCSP entails an additional request to the webpage server, which can add considerable delay. Browsers should support OCSP in order to increase browser performance. But before implementing OCSP, webmasters should understand what the benefits and drawbacks of the protocol are.

OCSP stapling has many advantages. First, it can be configured to require only two steps to validate a security certificate. For example, with HTTPS, two people are required to validate the security certificate – the web browser and the web server. There’s no need for a third party to verify a security certificate. Secondly, OCSP stapling can give site operators more control over their traffic.