Key Algorithms Flashcards

1
Q

DES

A

Block cipher
56 key length
Symmetric

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2
Q

3DES

A

Block
168 bits key

Symmetric

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3
Q

AES

Rijndael

A

Block
128, 192 or 256 bit

Symmetric
Used in WPA2

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4
Q

Blowfish

A

Block
32-448 bit key

Symmetric

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5
Q

RC4

A

Stream
40-2048 bits

Symmetric
Used in wpa

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6
Q

Two fish

A

Block
128,192 or 256

Symmetric

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7
Q

RSA

A

Asymmetric

Has Authentication

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8
Q

Ecc

Elliptical curve cryptography

A

Faster and cheaper than RSA

Can have smaller keys than RSA

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9
Q

Diffie Hellman

DH

A

Key exchange protocol
Take a number add a common number then give that new number across the wire. The other person then can add their number to this number and boom we have the same key

A+B=C
send C

A+D=E
Send E

E+B=X

C+D=X

Aka E+B=X=C+D

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