Final Exam Flashcards
What is cryptography?
- “secret writing”
2. Encryption/Decryption of messages to protect against unauthorized viewers
Types of modern encryption
Algorithm public, key secret and provides security.
Can be symmetric(secret) or asymmetric(public)
What is a symmetric Key?
Symmetric is traditional encryption. give it a password, and you can encrypt and decrypt with that password.
Known by anybody, and can be used to encrypt messages and verify signatures
or
uses two keys – a public key known to everyone and a private or secret key known only to the recipient of the message.
Public Key
When you digitally sign, take a hash of the clear text, and encrypt that with your own private key, and send it. Other user can decrypt it with your public key.
Digital Signatures.
What is hashing used for?
Integrity
What does CIA stand for?
Confidentiality, Integrity, Availability, and Authenticity
Confidentiality means.
Concealment of information or resources
Trustworthiness of data or resources in terms of preventing improper and unauthorized changes.
Integrity
The ability to use desired info or resources.
Availability
Authenticity is…
Identification and assurance of origin of info.
What is the default route?
0.0.0.0
OSPF is the acronym for?
Open Shortest Path First
What is OSPF used for?
routing protocol for IP networks. Uses a link state routing algorithm and falls into the group of interior routing protocols.
CA is?
CA (certificate authority) guys that issue certificates, CA sends your certificate.
CSR is?
CSR(Certificate Signing Request) is a document you send to a CA to get their stamp of approval and added to their list of people. This is generated with a private key.