As more business transactions go digital, the need to authenticate an entity has become increasingly critical. Digital certificates play an essential role in establishing digital trust and securing communication in today’s online world, and here’s what you need to know about using them in your organization.

Digital Certificate Definition: What Are Digital Certificates and Public Key Infrastructure (PKI)?

A digital certificate is an electronic document issued by a trusted third-party organization called a Certificate Authority (CA). This electronic ID card establishes the identity of the certificate’s owner and distributes the owner’s public key — a cryptographic key used for authentication, signing, and encryption.

Digital certificates authenticate and secure digital identities, whether human or machine.

Meanwhile, a PKI consists of policies, institutions, and technologies for managing the distribution, authentication, and revocation of digital certificates. The system establishes trust, performs authentication, and enables encryption to support secure communication and data integrity.

The Importance of Digital Certificates

Digital certificates are essential for ensuring data security and integrity. Here’s why you need them:

Authentication and Identify Verification

Digital certificates verify the identity of individuals, organizations, or devices in online transactions like e-commerce and online banking. Companies can establish trust by proving they’re legitimate entities and ensuring secure communications with partners and customers. 

For example, a website with an “https://” prefix has a Secure Sockets Layer (SSL) certificate and uses encryption to protect sensitive information users enter.

Data Integrity and Non-Repudiation

Digital certificates use digital signatures to protect data integrity. For example, when you digitally sign a document with a private key, the recipient can verify your signature and identity with the public key embedded in the digital certificate. 

The authentication process ensures the information isn’t modified during transit. Additionally, it provides evidence that prevents the sender from denying sending a digitally signed message or document. 

Trust and Regulatory Compliance

Digital certificates are issued by reputable, third-party CAs with strict security procedures for verifying applicants’ identities. Such credibility helps companies build trust and drive sales. Further, industries that involve the exchange of sensitive information, such as healthcare and finance, are required by law to use digital certificates to ensure data security.

Types of Digital Certificates

Here are the most common types of digital certificates and their use cases:

SSL/TLS Certificates

Also called Transport Layer Security (TLS) certificates, SSL certificates help secure communication over the internet via HTTPS connections. They encrypt data sent between a web server and a browser. You can protect sensitive user information by implementing SSL certificates on websites, e-commerce platforms, and online services or applications.

Code Signing Certificates

These certificates assure the code in a software application has not been modified or tampered with by unauthorized parties. Developers sign their software packages, installers, or applets with these certificates to verify the integrity and authenticity of their software. Users can be sure that any software with a code signing certificate originates from a trusted, legitimate source. 

Object Signing and Signature Verification Certificates

An object signing certificate verifies an object’s integrity, origination, or ownership. Meanwhile, a signature verification certificate is a copy of an object signing certificate without that certificate’s private key. You can use the corresponding public key to authenticate a digital signature created with an object signing certificate and determine the object’s origin.

CA Certificates

These digital credentials validate the identity of the CA that owns the certificate. It contains the CA’s identifying information and public key, allowing anyone to verify the authenticity of any certificate issued and signed by the organization. A copy of the CA certificate is required when you use an SSL, object signing, or signature verification certificate.

Client Certificates

Also called user or personal certificates, they’re issued to individuals for authentication purposes. For example, they’re often part of a multifactor authentication (MFA) mechanism or remote access protocol in an enterprise environment, allowing employees to use company data or internal resources via secure systems, virtual private networks (VPN), etc.

Optimize Digital Certificate Management with a Centralized Platform

Digital certificates are critical for building trust, ensuring data integrity, and complying with regulatory requirements. Today’s organizations manage thousands of certificates of different types, and doing so manually is time-consuming, labor-intensive, and error-prone. 

To ensure business continuity, avoid service outages, and prevent costly data breaches, enterprises should centralize their digital certificate management process to ensure seamless issuance, provision, renewal, and revocation of all certificates. 

Sectigo Certificate Manager (SCM) helps automate the lifecycle management of all PKI certificates from any CA across use cases, including web servers, enterprise email, secure networks, mobile devices, DevOps containers, application development, and key management in the public cloud to streamline processes and optimize efficiency.

Learn more about our CA-agnostic platform and see how we can help you manage the lifecycle of all your public and private digital certificates.

*** This is a Security Bloggers Network syndicated blog from Sectigo authored by Jason Soroko. Read the original post at: https://www.sectigo.com/resource-library/what-are-digital-certificates-and-why-are-they-important