How to choose an SSL certificate service brand?

西部数码 currently supports the sale of three brands of SSL certificates, as follows:

1 Symantec

Symantec is the world's largest information security vendor and service provider, and the most authoritative digital certificate authority. It provides a wide range of content and network security solutions for enterprises, individual users, and service providers. 93% of the Global 500 have chosen VeriSign SSL digital certificates. 赛门铁克 acquired VeriSign in August 2010. Currently, all VeriSign authentication services are provided by 赛门铁克, and in April 2012, VeriSign's product names and brand identity were changed.

2 GeoTrust

GeoTrust is the world's second largest digital certificate authority (CA), and a leader in the fields of identity authentication and trust authentication. The company's various advanced technologies enable organizations and companies of any size to securely and cost-effectively deploy SSL digital certificates and implement various identity authentications. From its founding in 2001 to capturing 25% of the global market share in 2006, in May 2006/September 2006, VeriSign acquired GeoTrust for USD 125 million. It is currently also a cost-effective brand of SSL certificates under 赛门铁克.

Purely from a technical perspective, the differences between Symantec (formerly VeriSign) and GeoTrust are as follows:

In terms of algorithm support, Symantec (supports three algorithms: RSA, DSA, ECC) is superior to Geotrust (supports two algorithms: RSA, DSA);
In terms of compatibility, Symantec is superior to Geotrust; Symantec is compatible with all browsers on the market, and its support for mobile is also the best
In terms of OCSP response speed, Symantec is superior to Geotrust;
In terms of CA security, Symantec is superior to Geotrust. Symantec is an internationally renowned security vendor, and its CA security level also has the top security factor internationally;
In addition to encrypted transmission, Symantec certificates also have additional functions such as malware scanning and vulnerability assessment;
Symantec provides commercial insurance indemnity protection for certificates, with a maximum amount of USD 1.75 million, while GeoTrust's maximum is USD 1.5 million.

3 TrustAsia

亚洲诚信 is the brand applied in the information security field by 亚数信息科技（上海）有限公司, and is a Platinum partner of Symantec™（赛门铁克）, professionally providing enterprises with all network security services including digital certificates. At the same time, TrustAsia brand SSL certificates are issued by Symantec root certificates.

4 Differences between brands

Certificates of different brands differ in browser address bar, encryption strength, and indemnity protection. The most important difference lies in the root certificate. For example, Geotrust wildcard is issued by a Geotrust root certificate, while Symantec wildcard is issued by a Symantec root certificate. Symantec root certificates can be compatible with all browsers on the market, and their support for mobile is also the best. Trustasia wildcard also uses 赛门铁克's root certificate, but it is a domain type certificate, and company information is not reflected in the certificate, so its price is relatively favorable.

Therefore, users can choose certificates with different authentication levels (DV, OV, EV) and domain support capabilities according to different web applications. Personal websites can only choose domain type DV certificates, and OV and EV type certificates can only be applied for by enterprises.