Digital Certificates

Digital Certificates

Digital Certificates - A digital certificate is an electronic "sign" that establishes your credentials when doing business or other transactions on the Web.

The Digital Certificates are issued by a certification authority (CA) and it contains the company name, a serial number, expiration dates, and a public key used for encrypting messages and digital signatures. The most widely used standard for digital certificates is X.509.

How to get a Digital Certificate. The individual or company wishing to encrypt information applies for a digital certificate from a Certificate Authority (CA). The CA issues an encrypted digital certificate containing the applicant's public key and a variety of other identification information. The CA makes its own public key readily available through the Internet.

The most common use of a digital certificate is to verify that a user a web site with is who he or she claims to be, and to provide some encription to the information. The recipient of some encrypted information uses the CA's public key to decode the digital certificate attached to the data, verifies it as issued by the CA and then obtains the sender's public key and identification information held within the certificate.

Digital ID Introduction - Introductory level overview of digital certificates.
Handbook of Applied Cryptography - Introduction to the practical aspects of conventional and public-key cryptography. (PDF and Postscript sample chapters)
Certificate Authorities: How Valuable Are They?
Glossary of Encryption And Hashing Terms
Frequently Asked Questions about Digital IDs From VeriSign
Internet Trust and the Impact of Certification Authorities
Introduction to Digital IDs
Introduction to Public Key Cryptography
Proof of Authentication
Web Certificate Authority Security Primer
by Entrust
What To Look For in a CA: A Buyer’s Guide
from Tradewave
Public Third Party Certificate Authorities
GTE-CyberTrust
Digital Certificate Authority
Keywitness
Canadian Certificate Authority
TradeWave
TradeAuthority Online CA
VeriSign
Digital Certificate Authority
Entrust
Web CA
Frontier Technologies
e-Lock Certificate Authority and Digital Signature Server
Netscape Communications
Certificate Server
Xcert
Sentry CA Certificate Authority Server
certificate 2018