Unit 4

When encryption deals with a private key to decrypt a message (only to one other person) and a public key that is distributed to everyone

The generic term for a technique (or algorithm) that performs encryption

A technique used for encryption that shifts the alphabet by some number of characters

An encoding technique that maps each letter of the alphabet randomly to different letters or characters

When you attempt to decode a secret message without knowing all the specifics of the cipher you are trying to crack

A method of encrypting text by applying a series of Caesar ciphers based on the letters of a keyword

A “hard problem for a computer is one in which it cannot arrive at a solution in a reasonable amount of time

Mod, or the name of the mathematical operation. Modulo gives the remainder from diving two numbers

A value that can be used to encrypt a message. However, only when combined with a mathematically related key can the message be decrypted

The complementary key to a public key that is used to decrypt a message

When the same key is used to encrypt and decrypt messages

Secure Sockets Layer, used to protect data and make sure no one could get the data

Transport Layer Security, similar to SSL but newer and more secure

Targeted phishing attacks towards a specific individual

Targeted phishing attacks on a CEO, president of a company, etc.

Proof of identity (a digital signature for a website) and it is a signature that can be issued by a certificate authority. It gives authentication and verifies ownership of that website (nothing to do with connection on the internet)

Opposite of preceding value T to F, F to T

T and T is T, all else F

F or F is F, all else T

Same is F, different is T

T nand T is F, all else T

F nor F is T, all else F