Blowfish Speed Comparison

Speed Comparisons of Block Ciphers on a Pentium
AlgorithmClock cycles per round# of rounds# of clock cycles per byte encryptedNotes
Blowfish 9 16 18 Free, unpatented
Khufu/Khafre 5 32 20 Patented by Xerox
RC5 12 16 23 Patented by RSA Data Security
DES 18 16 45 56-bit key
IDEA 50 8 50 patented by Ascom-Systec
Triple-DES 18 48 108  

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