6-1 Flashcards

1
Q

a modern symetric cipher that is widely used

A

AES or Advanced Encryption Standard

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2
Q

numeric codes used to represent all standard alphanumeric symbols. there are 255 of them.

A

ASCII codes

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3
Q

operations on Base 2 (binary) numbers. the operation include XOR, OR, and AND

A

Binary operations

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4
Q

a well-known symmetric block cipher created by bruce schneier

A

blowfish

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5
Q

to try to crack a password by simply every possible combination

A

brute force

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6
Q

one of the oldest encryption algorithms. it uses a basic mono-alphabetic cipher

A

caesar cipher

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7
Q

the process of un encrypting a encrypted message

A

decryption

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8
Q

a symmetric cryotograohy algorithim first published in 1877, no longer considered secure du to small key size

A

DES

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9
Q

a cryptographic method to verify a file or sender

A

digital signature

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10
Q

a block cipher designed as replacement for des

A

IDEA ( international Data encryption algorithim

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11
Q

ab encryption cipher using only one substitution method

A

mono alphabet cipher

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12
Q

a widely used tool that has symetric and asymetric algorithms, often used to encrypt email

A

pgp / pretty good privacy

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13
Q

a process that uses quantum physics to encrypt data

A

quantum encryption

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14
Q

a phenomina from quantum physics where 2 subatomic particles are related in such a way that a change to the state of one instantaneously causes change to the state of the other

A

quantum entanglement

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15
Q

the algorithim used by AES

A

Rijndael algorithm

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16
Q

apublic encryption method developed in 1977 by three mathematicians, ron rivest ad shamir, and led adleman. the name is derived from the first letter of each mathematicians last name

A

RSA

17
Q

encryption methods that use more thatn one substitution alphabet

A

multi alphabe substitution

18
Q

an encryption method where the same key is used to encrypt and decrypt the message

A

symetric key system

19
Q

tunneling that allows the user to determine the parameters of a VPN tunnel

A

colunteer tunneling

20
Q

a widely used standard for digital certificates

A

X.509