There are several types of VPN servers have been announced and each day several VPN servers are coming up with their higher versions, new developments and additions. Each of these servers are having own specifications and advantages that you should know before you can use one for your purpose. After all the purpose for using VPN servers will vary from one person to the other!
Among all the advantages offered by VPN servers, it’s the confidentiality, the integrity and the authentication that have been termed as the major ones. These are the prime objectives behind the announcement of any VPN server. Here we will discuss one by one about these advantages.
First of all, we will look at the confidentiality. When two different groups are exchanging information, at the same time confidentiality is what can ensure the privacy. Each of the VPN server use to offer a secure VPN account and some sort of encryption. As per the present condition VPN servers are suing two major cryptographs and these are:
- Secret key cryptograph
- Public key cryptograph
The secret key cryptograph will use the key for both the encrypted and decrypted messages. However, the exchange of key has always remained as a major issue with the key cryptographer as this sort of key cannot be sent on the internet unencrypted.
As far as the public key cryptograph is concerned it can use the mathematically linked key pair for both the party involved in a particular communication. It exactly suggests that the pair one key can easily encrypt the data which may decrypt by the other party.
There is always a chance for the alteration of exchanged information during the transit period. Well, the VPN server’s integrity factor is there to ensure that no changes will occur with the exchanged information. There are three major technologies have been added for the best-priced VPNs to maintain their integrity and these are:
- One Way Hash Functions
- Message-Authentication Codes or known as the MACs
- Digital Signatures