Whois & Analysis for instantssl.com

In cryptography, a certificate authority or certification authority (CA) is an entity that issues digital certificates.

A digital certificate certifies the ownership of a public key by the named subject of the certificate.

This allows others (relying parties) to rely upon signatures or on assertions made about the private key that corresponds to the certified public key.

A CA acts as a trusted third party—trusted both by the subject (owner) of the certificate and by the party relying upon the certificate.

The format of these certificates is specified by the X.509 standard.

Comodo Group, Inc. is a privately held group of companies providing computer software and SSL digital certificates, based in Clifton, New Jersey in the United States.

It has offices in the United Kingdom, Ukraine, Romania, China, India, Turkey and Clifton, NJ.

As of 3 February 2017, Comodo is the largest issuer of SSL certificates with a 44% market share on 13.9% of all web domains.

In cryptography, a public key certificate, also known as a digital certificate or identity certificate, is an electronic document used to prove the ownership of a public key.

The certificate includes information about the key, information about the identity of its owner (called the subject), and the digital signature of an entity that has verified the certificate's contents (called the issuer).

If the signature is valid, and the software examining the certificate trusts the issuer, then it can use that key to communicate securely with the certificate's subject.

In email encryption, code signing, and e-signature systems, a certificate's subject is typically a person or organization.

However, in Transport Layer Security (TLS) a certificate's subject is typically a computer or other device, though TLS certificates may identify organizations or individuals in addition to their core role in identifying devices.

TLS, sometimes called by its older name Secure Sockets Layer (SSL), is notable for being a part of HTTPS, a protocol for securely browsing the web.

In Windows NT operating systems, a Windows service is a computer program that operates in the background.

It is similar in concept to a Unix daemon.

A Windows service must conform to the interface rules and protocols of the Service Control Manager, the component responsible for managing Windows services.