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. 2001 Jun 1;106(3):511–577. doi: 10.6028/jres.106.023

Table 19.

Software speeds (encryption): 8 bit processors (C and assembler)

N O
Clocks Norm. Clocks Norm.
MARS   34 163a 0.28 45 588 0.56
RC6   32 731 0.29 34 736 0.73
RIJN  9 464 1.00 25 494 1.00
SERP 126 074 0.08 71 924b 0.35
TWOF   26 500 0.36 31 877 0.80
a

The value is based on the Round 1 version of MARS (with a different key schedule from the Round 2 version).

b

The study used a non bitslice implementation of Serpent.