Chapter 8 Principles of Information Security Exams and Answers Rated A+
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Chapter 8 Principles of Information Security
Institution
Chapter 8 Principles Of Information Security
Chapter 8 Principles of Information Security
Cryptoanalysis - Answer- The process of obtaining the plaintext message from a ciphertext message without knowing the keys used to perform the encryption
cryptography - Answer- The process of making and using codes to secure information
Cyrt...
Chapter 8 Principles of Information
Security
Cryptoanalysis - Answer- The process of obtaining the plaintext message from a ciphertext
message without knowing the keys used to perform the encryption
cryptography - Answer- The process of making and using codes to secure information
Cyrtology - Answer- The field of science that encompasses cryptogoraphy and cryptanalysis
Mono-alphabetic substitution - Answer- a substitution cipher that only incorporates a single
alphabet in the encryption process
Poly-alphabetic Substitution - Answer- A substitution cipher that incorporates two or more
alphabets in the encryption process
Substitution Cipher - Answer- an encryption method in which one value is substituted for
another
Vignere Cipher - Answer- An advanced type of substitution cipher that uses a simple poly-
alphabetic code
Transposition cipher - Answer- A cryptographic operation that involves simply rearraging the
values within a block based on an established pattern. AKA permutation Cipher
Exclusive or Operation (XOR) - Answer- A function within boolean algera used as an
encryption function in which two bits are compared. If the two bits are dentical the result is
binary 0; otherwise the result is a binary 1.
Vernam Cipher - Answer- A cryptographic technique developed at AT&T and known as the
"One time pad" this cipher uses a set of charachters for encryption operations only one time
then discards it.
Hash Algorithm - Answer- Public functions that create a hash value, also known as a message
digest, by converting variable length messages into a single fixed length value
Hash functions - Answer- Mathematical algorithms that generate a message summary or
digest (fingerprint) to confirm message identity and integrity
Message authentication code (MAC) - Answer- A key dependent, one way hash function that
allows only specific recipients (Symmetric key holders) to access the message digest/
Message Digest - Answer- A value representing the application of a hash algorithm on a
message that is transmitted with the message so it can be compared with the recipients locally
calculated hash of the same message. if both hashes are identical after transmission, the
message has arrived without modification. AKA hash value
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