Public key infrastructure, PKI, is a framework that is used to provide trust by using a trusted third-party to authenticate entities by using a digital certificate for each entity.
- [Instructor] Public key encryption uses two keys, … a public key, and a private key. … A public key is public, … and anyone can share the public key and claim ownership. … While this seems like a great concept, … we must be able to trust that the public key belongs … to the entity that shared the public key. … Public Key Infrastructure is not a protocol, … but a framework that is used to provide trust. … Public Key Infrastructure uses a trusted third party … or a certificate authority to authenticate entities … by using a digital signature for each entity. … A certificate authority is responsible for issuing, … revoking, and distributing certificates … and includes Verisign, GoDaddy, and Thawte. … But companies can create their own certificates, … that generally use the format X.509. … Let's take a look at how this works. … Up at the top we see the certificate authority, … which is what we consider the trusted third party. … We then see Alice, and we see Bob, … all three entities have generated a public …
- Define “passphrase.”
- Recall the purpose of multifactor authentication.
- Identify the tool used in today’s Windows operating systems to secure the file system.
- Explain what happens when a file is moved into a folder with permissions.
- Name the authentication protocol used in Active Directory.
- Recognize the location of the audit logs.
- Summarize the purpose of hardening.
- Explain the purpose of cryptographic techniques.
Skill Level Beginner
IT Security Foundations: Core Conceptswith Lisa Bock1h 35m Beginner
IT Security: Key Policies and Resourceswith Gregory Michaelidis23m 44s Intermediate
1. Understand User Authentication
2. Understand Permissions
3. Dissecting Audit Policies
4. Server Protection
5. Providing email protection
6. Understand Encryption
Next steps1m 3s
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