PKI Public key infrastructure - allows users of the internet and other public networks to engage in secure communication. data exchange and money exchange.

PKI
Public key infrastructure - allows users of the internet and other public networks to engage in secure communication. data exchange and money exchange.

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Digital Certificate

An attachment to an electronic message used for security purposes. It verifies that a user sending a message is who they claim to be, and to provide the receiver with the means to encode a reply

Certificate Authority

A trusted third party organisation or company that issues digital certificates used to create digital signatures and public-private key pairs.

Digital signature

A digital code that can be attached to an electronically transmitted message that uniquely identifies the sender

Types of Encryption

Symmetrical

Both encryption and decryption is carried out with the same key

Asymmetrical

The encryption is carried out by the public key, and decryption is carried out by the private key (which is only known by the sender and receiver

Hash Function

Message Digest

The representation of text in the form of a single string of digits, created using a formula called a one-way hash function. Encrypting a message digest with a private key creates a digital signature, which is an electronic means of authentication

Hashing

Encryption protocols

SSL

TLS

Secure sockets layer - The standard security technology for establishing an encrypted link between a web server and a browser. This link ensures that all data passed between the web server and browsers remain private and integral.

Transport layer security -

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