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How Does PKI Work – Guide
PKI (or Public Key Infrastructure) is the encryption and cybersecurity framework that secures communications between the server (your website) and the client (your users). Think about all the information, people and services your team communicates and works with. PKI is essential in building a reliable and secure business environment by being able to verify and exchange data between multiple servers and users.
Through encryption and decryption, PKI is based on digital certificates that verify the identity of machines and/or users that ultimately prove the integrity of the transaction. As the number of machines is increasing dramatically in today’s digital age, it is important that our information is trusted and protected from attacks.
How does PKI work?
PKI merges the use of asymmetric and symmetric encryption. Both symmetric and asymmetric cryptography have their own strengths and best use case scenarios, which makes the combination of both so powerful in the public key infrastructure.
Symmetric Encryption
Symmetric encryption secures the unique private key that is generated in the initial exchange between the parties in the digital handshake, if you wish. This secret key must be passed from one party to another so that all parties involved can encrypt and decrypt the information exchanged. This secret key can be in the form of a password, or it can be a series of random numbers or letters generated by a random number generator (RNG).
Asymmetric Encryption
Asymmetric cryptography is quite new to the game and you might better know it as “public key cryptography”. Asymmetric cryptography uses two keys, one public and one private. The public key encrypts and the private key decrypts. It allows you to create a public key for the party reporting to you so that they can encrypt your incoming information, after which you will be able to decrypt the information with a private key.
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