Definition of VPN Authentication and Encryption

The fundamentals of creating a VPN are Authentication, strong Encryption and a method of secure Key Exchange. Authenticate the users, securely exchange keys for encryption then encrypt the data using the generated keys.

Something you have - can be a key card, a security pass, drivers licence, a passport or similar. Something you are - A physical characteristic of your body such as your finger print, the retina print of your eye or your DNA.

Encryption is a means of taking some plain readable text into a cipher text utilizing some form of algorithmic mapping. Encryption systems must use mathematically complex algorithms so as to provide a good enough deterrent from attackers to be able to use some brute force method of calculating the algorithm in use. Two common methods of encryption are Symmetric Encryption Systems and Public Key Encryption Systems:

Symmetric encryption simply uses an identical key for encryption of the plain text and decryption of the cipher text. The encryptor applies the key to the plain text data which results in a cipher text. The decryptor reverses the by applying the same key to the cipher text to reveal the plain text data. The most common symmetric encryption system is the Data Encryption Standard (DES), of which there are several variations.

Public Key Encryption systems are a lot more complex than symmetric encryption systems such as DES and depend upon mathematical functions that are often referred to as "trap-door" functions. They involve complex mathematical formulae which normally involve exponentiation to high powers, modular arithmetic and the products of large prime numbers. The algorithms yield an encryption mechanism and an encryption key which can be made public and a decryption algorithm and decryption key that is kept secret. The mathematics of the algorithms is so complex that it is not possible to deduce the decryption mechanism from the encryption mechanism alone.

You may have noticed people in public wearing wristbands with a message embossed or debossed on them. It is mostly popular amongst the youth where they are often known to be a part of awareness campaigns that are often known to make use of wristbands as promotional products. The message that these wristbands contain are known to spread like wildfire.

Organisations make use of wristbands for their promotional and branding tasks as they are comfortable, attractive as an accessory, and have a feature of being hi-vis. It is a better option than stamping people's hands with messy inks and missing out on most attendees especially when there is a crowd.

You may be at a public place that is crowded, and you have your children in tow, you child can be kept safe when they wear such wristbands customised with your contact details. These bands are colourful and have hi-vis features that can easily allow you to trace your child in case you part ways in the crowd. • Tyvek Bands

• Silicone or Vinyl Bands

• Plastic Bands

• Fabric Bands

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— Rabu, 26 April 2017 — Add Comment