Week 6 Flashcards
replaces bits, characters or blocks or characters with different bits characters or blocks
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Substitution Cipher
does not replace text but rather moves the original values around
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Transposition Cipher
encryption method that uses Caesars method but shifts the letter 13 spaces
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ROT 13
Type of cipher used in Enigma Machine
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polyalphabetic substitution cipher
random bits that will be used by the algorithm to specify how the plain text is converted
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Keys
mathematical formulas that dictate the rules how plaintext will be turned to cipher text
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Algorithms
work on blocks of bits
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Block CIpher
work on bits one byte at a time
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Stream Ciphers
The first block cipher Introduced mathematical equations and functions introduced by IBM
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Lucifer
science of studying and breaking the secrecy of encryption processes
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Cryptanalysis
method of transforming readable data, called plaintext into a form that appears to be random and unreadable, which is called cipher text
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Encryption
Any system or product that provides encryption and decryption service
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Cryptosystem
hybrid system of symmetric and asymmetric key algorithms
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PKI
Trusted organization that maintains and issues digital certificates.
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Certificate Authority
a method of storing and transmitting data in a form that only those it is intended for can read and process.
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Cryptography
