Twofish - Performance vs. Other Block Ciphers (on a Pentium)

Algorithm Key Length Width (bits) Rounds Cycles Clocks/Byte
Twofish variable 128 16 8 18.1
Blowfish variable 64 16 8 19.8
Square 128 128 8 8 20.3
RC5-32/16 variable 64 32 16 24.8
CAST-128 128 64 16 8 29.5
DES 56 64 16 8 43
Serpent 128, 192, 256 128 32 32 45
SAFER (S)K-128 128 64 8 8 52
FEAL-32 64, 128 64 32 16 65
IDEA 128 64 8 8 74
Triple-DES 112 64 48 24 116

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