Unit 5(?) Cybersec

Blockchain technology

A decentralized network where transactions are verified and added to a chain of blocks, ensuring security and immutability.

Certificate Authority (CA)

An entity that stores, signs, and issues digital certificates.

Public Key Infrastructure (PKI)

Set of policies, roles, and procedures used to create, manage, and store public keys for encryption and authentication. Governing body behind issuing of digital certificates.

Digital Signature

A mathematical scheme for verifying the authenticity of digital messages/documents.

Private Certificate Authorities

Self-hosted CAs run by enterprises for internal use.

PKI Trust Relationships

Relationships that allow a CA to trust a certificate issued by another CA.

Web Server SSL Certificate

A certificate issued to a web server to authenticate its identity to the client.

Code Signing Certificate

A digital certificate that identifies an entity and is issued by a CA.

Self-signed Certificate

A digital certificate that is not signed by a trusted third-party CA.

Machine and Computer Certificate

A file/password that proves the authenticity of a device, server, or user.

Email Certificate

Digital certificates used to sign and encrypt email messages.

User Certificate

Digital certificates issued by a CA to authenticate a user to a server.

Registration Authority (RA)

An entity that verifies the identity of a certificate requester before signing the certificate.

Key generation

The process of creating a key for a user.

Certificate generation

Allocating a key to a user and ensuring no one else can use that key.

Distribution

Making the key available to users.

Storage

Storing and protecting the key against unauthorized use.

Revocation

Managing compromised keys.

Expiration

A defined end of life for a certificate.

Commercial CA

A CA that provides web certificates and is automatically handled by browsers.

Root certificate

The public key certificate that identifies the root CA and issues other certificates.