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Public Key Cryptography -- is a public and private key system that uses the same RSA algorithm by a certificate authority (CA). The private key goes to the party requesting the public key. (a digital certificate that resides on the server for secure access. (the private key is not sent through the Internet)
The private key decrypts data that has been encrypted with a public key a surfer who can verify the public key. So, when a secure SSL Digital Certificate is sent, they have access to the public key, but not to the private key. An administrator will usually encrypt messages with a public key. When revceived, it's decrypted the private key.
Besides encrypting messages for privacy, you can authenticate your identity by using your private key to encrypt an SSL digital certificate. Then a public key is used to decrypt it. The process goes like this:
- An encrypted message with a public key is sent
- An encrypted digital signature is attached to the sender's Private key
- The receiver's private key decrypts the encrypted message
- The sender's ssl encrypted signature is decrypted and authenticated using the sender's public key.
DigiCert® offers PKI SSL Digital Certificate Solutions that enable your company to easily implement a PKI. The explosion of e-commerce and business-to-business commerce over the Web has created incredible demand for effective PKI solutions for virtual private network (VPN) tunnelling with the IP Security (IPsec) standard. RSA developed the first algorithms used by PKI vendors like Verisign, Thawte, and digicert. This software allows your company to create your own Secure E-Commerce SSL Digital Certificate Authorities and easily manage digital ssl certificates.
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