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'''Certificate Authorities''' are trusted third party companies who issue digital certificates and public-private keys for encryption of messages. In order to issue these certificates, a CA first consults with a registration authority ([[RA]]) such as credit card company to check whether the requester's information is legit. Only after the proper verification, the CA can issue a certificate claiming that the organization or the individual is the one who he claims to be. Having a digital certificate on a website proves the owners identity hence developing a trustworthy environment in business.<ref>[http://www.webopedia.com/TERM/C/certification_authority.html WeboPedia]</ref>  

'''Certificate Authority''' is a trusted third party company who issues digital certificates and public-private keys. In order to issue these certificates, a CA first consults with a registration authority ([[RA]]) such as credit card company to check whether the requester's information is legit. Only after the proper verification, the CA can issue a certificate claiming that the organization or the individual is the one who he claims to be. Having a digital certificate on a website proves the owners identity hence developing a trustworthy environment in business.<ref>[http://www.webopedia.com/TERM/C/certification_authority.html WeboPedia]</ref>  

A certificate includes all the information about the owner including his public key, the expiration date of the certificate.<ref>[http://searchsecurity.techtarget.com/definition/certificate-authority SearchSecurity]</ref>

A certificate includes all the information about the owner including his public key, the expiration date of the certificate.<ref>[http://searchsecurity.techtarget.com/definition/certificate-authority SearchSecurity]</ref>