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Symmetric Encryption

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lprice's version from 2015-05-19 14:29

Symmetric Encryption

 

Question Answer
DES64 bit block, 56 bit key, 16 rounds
3DES112 bit or 168 bit key, 48 rounds
AES128, 192, 256 bit keys; 10, 12, 14 rounds
IDEA64 bit block, 128-bit key, 8 rounds, PGP
BlowfishVariable block 32-448 bit keys
Twofish128 bit blocks, 256 bit key
RC4Stream
RC532, 64, 128 bit blocks, 0-2040 bit keys, rounds 0-255
Serpent?
RC4(x)?
memorize

Modes of Operation

Question Answer
Electronic Codebook Mode ECBNative encryption mode used for small amounts of data. Weakest form of DES.
Cipher Block Chaining Mode CBCWorks by taking each datum from the previous and applying it to the next. Propagates errors.
memorize

Asymmetric Encryption