How E-Mail Security Works
Secure e-mails rely on digital certificates to establish a trust relationship between two computers. Digital certificates are issued by certification authorities, which can be trusted third parties or certificate servers set up by your company.
note
 | Some well-known certificate authorities include VeriSign and Thawte. You will learn how to get a free e-mail signing certificate later in this chapter, in the section “Getting a Digital Certificate.” |
A digital certificate consists of two parts: a private key and a public key. E-mails are encrypted using a public key that is available to anyone, but they can be decrypted only ...
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