SSL CA certificate authority that is called the bodies of Certificate Authority certificate authority only through WebTrust international safety audit certification, the root certificate to the browser pre-installed into the mainstream, as the world's trusted ssl certificate authority.
HTTPS (full name: Hyper Text Transfer Protocol over SecureSocket Layer), is safe for the target HTTP channel, on the basis of HTTP to ensure the security of the transmission through the transmission encryption and authentication. HTTPS is added to the HTTP lower layer SSL, HTTPS is SSL security infrastructure, thus requires detailed encrypted SSL. Of HTTPS (HTTP and TCP in between) different from the HTTP default port and an encryption / authentication layer. The system provides authentication and encrypted communications methods.
CA mainstream global institutions Comodo, Symantec, GeoTrust, DigiCert, Thawte, GlobalSign, RapidSSL, of which Symantec, DigiCert is a subsidiary of GeoTrust institutions, currently on the market mainstream brands are ssl certificates Comodo certificate, Symantec certificates, GeoTrust certificate, Thawte and RapidSSL certificate certificate, and some unknown certificate authority can also issue digital certificates.
DigiCert
DigiCert owns DigiCert, Symantec, Geotrust, Thawte, Rapid 5 large SSL certificate brands. DigiCert SSL certificate is divided into two types of authentication OV and EV level, while supporting multiple domains and wildcard function, it is the world rarely directly apply for one IP support CA certificate.
Symantec
Symantec (Symantec) SSL certificates formerly known as Verisign, after the December 2017 acquisition by DigiCert now use DigiCert root certificate. Symantec Secure Site SSL certificate is still the industry especially in the financial banking, securities and other large enterprises recognized brand. Symantec Secure Site SSL certificate support Norton Secured Seal is the site has good credibility.
A certificate type: OV SSL Certificates, EV SSL certificates, single-domain SSL Certificates, multi domain SSL certificates, wildcard certificates.
GeoTrust
GeoTrust is the world's popular certificates a cost-effective, customer service worldwide. Currently using DigiCert root certificate, security and stability have reliable protection.
GeoTrust established from 2001 to 2006 occupation of the global market share of 25% of the market, there are more than 100,000 users in using GeoTrust SSL certificates in more than 150 countries worldwide. Chinese support Chinese domain name and display name, loved by domestic users, currently GeoTrust SSL Certificate market share of over 30%, and the annual growth rate of 150%.
Geotrust provide DV, OV, EV SSL certificate three authentication level, in function, support a single domain, multiple domain names, wildcards and multiple domain wildcard function.
Entrust
Entrust is a Canadian CA brand, has a long history, forensic strict norms, almost never had any trouble in the issuance of SSL certificates, with good humane management mechanism. OV and EV support two authentication levels of SSL certificates, single-domain version, double-domain version, wildcard, wildcard and multi-domain functionality. Product segments in detail, is recommended.
Comodo / Sectigo
Comodo SSL certificate has been renamed Sectigo, but its excellent value for money and issue rate has not affected in any way. Comodo / Sectigo of choice for the vast number of personal sites and small and micro businesses, because the price is really cheap place.
Comodo has over 20 years of industry experience digital certificate, the certificate issued first in the world to date more than 100 million copies have been issued a certificate to provide various types of digital certificates for all sites and mobile application security solutions.
RapidSSL
RapidSSL (CA agency) certificate is a certificate GeoTrust brand of inexpensive entry-level SSL certificate brand, sub-brand currently belong Digicert whose root certificate is Digicert, only two DV SSL certificate product, relatively Digicert other sub-brands of DV SSL certificates, much cheaper price, ideal for small sites and personal users to install the application.
CFCA
China Financial Certification Center (China Financial Certification Authority, referred to as CFCA) is a national authority of the security agencies and the approval of People's Bank of China National Information Security Management body established. China Financial Certification Center for Global Trust Certificate (Global Trust Certificate) is issued to the digital certificates on a global scale, through the Microsoft root certificate program certification, Mozilla root certificate authentication, Google (Android) root certificate authentication and apple root certificate authority whose root certificate is already Microsoft embedded systems, equipment, Mozilla related products, Google (Android operating system) and Apple-related products related products.
TrustAsia
Asia integrity is a professional brand of SSL certificates issued by internationally renowned institutions DigiCert CA provide infrastructure support, support for the industry standard encryption. Asia also has integrity (TrustAsia®) SSL Certificates independent intellectual property rights, SSL certificate management platform (MPKI ™), SSL certificates online test and evaluation services (MySSL), SSL certificates Cloud Monitoring System (MySSL Enterprise Edition) and advanced encryption nowhere not, HTTPS site-wide encryption, key protection, network security integrated solutions and a series of network information security management solutions.
Above certificate authority is required fee, you can get a free single domain certificate by partial cloud manufacturers.
Let's Encrypt
Let's Encrypt is a certificate authority, encryption provides free X.509 certificates through an automated process for the Transport Layer Security (TLS), designed to eliminate so far manually create, verify, signature, install and update the security certificate of the site complicated process. the agency by the electronic Frontier Foundation, the Mozilla Foundation, Cisco and US content delivery network provider Akamai Technologies and other foundations and corporate sponsors.
Deployed to the server via the open source program, you can quickly get the certificate as needed. You can also come to the encryption application online sites, without having to deploy the application environment.
CA ssl certificate authority according to the application can be divided into domain validation certificate type DV, OV type certificate validation organization, enhanced expansion of EV certificates, certification bodies in the inspection process, CSR documents submitted by the applicant must meet the requirements of CA, otherwise the application people need to re-submit the file.