What is user certificate authentication?

Asked By: Grisel Leura | Last Updated: 19th January, 2020
Category: technology and computing web hosting
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Client Certificate Authentication is a mutual certificate based authentication, where the client provides its Client Certificate to the Server to prove its identity. This happens as a part of the SSL Handshake (it is optional).

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Hereof, how does client certificate authentication work?

In server certificates, the client (browser) verifies the identity of the server. In client authentication, a server (website) makes a client generate a keypair for authentication purpose. The private key, the heart of an SSL certificate, is kept with the client instead of the server. It's stored in the browser.

Subsequently, question is, why do we use authentication certificates? Certificates replace the authentication portion of the interaction between the client and the server. Instead of requiring a user to send passwords across the network continually, single sign-on requires the user to enter the private-key database password once, without sending it across the network.

Furthermore, what is a certificate authentication?

A certificate-based authentication scheme is a scheme that uses a public key cryptography and digital certificate to authenticate a user. The server then confirms the validity of the digital signature and if the certificate has been issued by a trusted certificate authority or not.

How do you verify a client certificate?

5 Answers

  1. The client has to prove that it is the proper owner of the client certificate.
  2. The certificate has to be validated against its signing authority This is accomplished by verifying the signature on the certificate with the signing authority's public key.

23 Related Question Answers Found

What is the use of certificate?

One particularly common use for certificate authorities is to sign certificates used in HTTPS, the secure browsing protocol for the World Wide Web. Another common use is in issuing identity cards by national governments for use in electronically signing documents.

What does client certificate mean?

In cryptography, a client certificate is a type of digital certificate that is used by client systems to make authenticated requests to a remote server. Client certificates play a key role in many mutual authentication designs, providing strong assurances of a requester's identity.

What is difference between client and server certificate?

Client Certificate vs Server certificate: What's the difference? Server certificates are used to authenticate server identity to the client(s). Client certificates are used to authenticate the client (user) identity to the server. Server Certificates are based on PKI.

How do device certificates work?

A device certificate is an electronic document that is embedded into a hardware device and can last for the life of the device. The certificate's purpose is similar to that of a driver's license or passport: it provides proof of the device's identity and, by extension, the identity of the device owner.

What does a certificate contain?


In their simplest form, a certificate contains a public key and a name. The certificate may also contain an expiration date, the name of the certifying authority that issued the certificate, a serial number and optional additional information.

What does signing a certificate mean?

The code signing certificate acts as a digital signature.
A certificate contains information that fully identifies an entity, and is issued by a certificate authority (CA) after that authority has verified the entity's identity.

What is authentication of documents?

Authenticating a document is free. It proves that the signature, the position of an official and the seal on a certified document are genuine. Other jurisdictions or countries will recognize your authenticated document as a valid copy. Authentication is also called legalization or apostille.

Who can issue digital certificate?

Who issues the Digital Signature Certificate? A licensed Certifying Authority (CA) issues the digital signature. Certifying Authority (CA) means a person who has been granted a license to issue a digital signature certificate under Section 24 of the Indian IT-Act 2000.

How do I get an encryption certificate?

Enter your email address and click search, or you may search under your full name as it appears on your certificate registration.
  1. Find your Encryption certificate and click on it.
  2. Select download (on the bottom) then on the following screen, select Microsoft Code Signing on the ID format drop down.

What is digital certificate example?


A digital certificate is a digital form of identification, like a passport. A digital certificate provides information about the identity of an entity. A digital certificate is issued by a Certification Authority (CA). Examples of trusted CA across the world are Verisign, Entrust, etc.

What are the different types of digital certificates?

There are three main types of Digital Certificates, they are:
  • Secure Socket Layer Certificate [SSL] Digi-SSL™
  • Software Signing [Code Signing Certificate] Digi-Code™
  • Client Certificate [Digital ID] Digi-ID™

How do you validate a security certificate?

How to Check a Certificate's Expiration Date (Chrome)
  1. Click the padlock. Start by clicking the padlock icon in the address bar for whatever website you're on.
  2. Click on Valid. In the pop-up box, click on “Valid” under the “Certificate” prompt.
  3. Check the Expiration Data.

What is meant by digital certificate?

A digital certificate authenticates the Web credentials of the sender and lets the recipient of an encrypted message know that the data is from a trusted source (or a sender who claims to be one). Digital certificates are also known as public key certificates or identity certificates.

What is a WiFi certificate?

WiFi Certificate protects the registration process and encrypts log-in credentials when connecting to public WiFi, ultimately providing secure network access and increasing trust in public hotspots and sign-up services.

How do I install a client certificate?


  1. Open Google Chrome.
  2. Select Show Advanced Settings > Manage Certificates.
  3. Click Import to start the Certificate Import Wizard.
  4. Click Next.
  5. Browse to your downloaded certificate PFX file and click Next.
  6. Enter the password you entered when you downloaded the certificate.