D-Link DWS-1008 Product Manual - Page 276
Public Key Infrastructures, Public and Private Keys
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• If the switch has no corresponding CA certificate, the switch does not respond to the request from MSS. If the switch does have a corresponding CA certificate, and the server certificate is validated (date still valid, signature approved), the switch responds. If the switch does not respond to the request from MSS, authentication fails and access is denied. For EAP (802.1X) users, the public-private key pairs and digital certificates can be stored on a RADIUS server. In this case, the switch operates as a pass-through authenticator. Public Key Infrastructures A public-key infrastructure (PKI) is a system of digital certificates and certification authorities that verify and authenticate the validity of each party involved in a transaction through the use of public key cryptography. To have a PKI, the switch requires the following: • A public key • A private key • Digital certificates • A CA • A secure place to store the private key A PKI enables you to securely exchange and validate digital certificates between switches, servers, and users so that each device can authenticate itself to the others. Public and Private Keys D-Link's identity-based networking uses public key cryptography to enforce the privacy of data transmitted over the network. Using public-private key pairs, users and devices can send encrypted messages that only the intended receiver can decrypt. Before exchanging messages, each party in a transaction creates a key pair that includes the public and private keys. The public key encrypts data and verifies digital signatures, and the corresponding private key decrypts data and generates digital signatures. Public keys are freely exchanged as part of digital certificates. Private keys are stored securely. D-Link DWS-1008 User Manual 257
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