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Computer Security and Reliability
AP Computer Science Principles Unit 4
Terms in this set (16)
the observation that computing power roughly doubles every two years
a broad term for datasets so large or complex that traditional data processing applications are inadequate
A business/corporate term for a one-page document that summarizes a large issue, topic or plan. The purpose is to distill and highlight the most important pieces of information in a digestible manner so that the reader can be quickly acquainted with the relevant details of the "big picture."
a process of encoding messages to keep them secret, so only "authorized" parties can read it
a process that reverses encryption, taking a secret message and reproducing the original plain text
the generic term for a technique (or algorithm) that performs encryption
a technique for encryption that shifts the alphabet by some number of characters
Random Substitution Cipher
an encoding technique that maps each letter of the alphabet randomly to different letter or characters
when you attempt to decode a secret message without knowing all the specifics of the cipher
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.
the "clock size"
Modulo (or "mod")
the name of the mathematical operation, gives the remainder from dividing two numbers
a type of crytographic based on algorithms that require two keys -- one of which is secret (or private) and one of which is public
a value that can be used to encrypt a message, however only when combined with a mathematically-related private key, can the message be decrypted
the complementary key to a public key that is used to decrypt a message
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