Digital Certificates are a means by which consumers and businesses can utilise the security applications of Public Key Infrastructure (PKI). PKI comprises of the technology to enables secure e-commerce and Internet based communication.
Public Key Infrastructure (PKI) refers to the technical mechanisms, procedures and policies that collectively provide a framework for addressing the previously illustrated fundamentals of security: authentication, confidentiality, integrity, non-repudiation and access control.
PKI enables people and businesses to utilise a number of secure Internet applications. For example, secure and legally binding emails and Internet based transactions, and services delivery can all be achieved through the use of PKI.
PKI utilises two core elements; Public Key Cryptography and Certification Authorities.
A CSR (Certificate Signing Request) is a file containing your certificate application information, including your Public Key. The CSR needs to be generated on the webserver which will be using the SSL cert. The method on how to do this depends on the type of webserver you are using.
Click on a link below to view the installation procedures.
A CA (Certification Authority) is a trusted third party that issues certificates. On the Web, certification authorities are typically separate business entities whose public keys are provisioned to the browser by the browser supplier. The certification authority accepts requests for certificates from Web site operators who provide the identifying information that they wish to have included in the certificate. The certification authority verifies the accuracy and applicability of the identifying information before including it in the certificate and returning it to the Web site operator.
All SSL certificate services include a limited Warranty to provide your site extra assurance that your site is safe to conduct online business. This Warranty is payable to your site visitors who rely on your Comodo SSL certificate and who incur losses resulting directly from an online credit card transaction as a result of a mis-issued SSL certificate. This Warranty is only payable if the transaction involved an amount no greater than the Max Transaction Value identified below for the relevant certificate type. For example, InstantSSL only up to $1,000 may be paid out per transaction, and the aggregate warranty amount paid out per SSL certificate (the "Payment Limit") is as set forth below.
| Certificate Type | Max Transaction Value | Payment Limit |
| InstantSSL | $1,000 | $10,000 |
| ProSSL | $10,000 | $100,000 |
| PremiumSSL | $10,000 | $250,000 |
| PremiumSSL Wildcard | $10,000 | $250,000 |
Secure unlimited sub-domains on your website (e.g. www.yourdomain.com, secure.yourdomain.com, signup.yourdomain.com) with a single Premium Wildcard SSL Certificate. Wildcard Certificates are a cost effective and efficient means of securing all subdomains without the need to manage multiple certificates.
Multi-server licensing for customers requiring their Wildcard SSL Certificate to be used across multiple physical servers. When purchasing a Premium Wildcard SSL Certificate please advise how many servers you will be using.
Premium Wildcard SSL Certificate can be used within different platforms like Apache and IIS.
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