def generate_simon_version(n, rounds, a=8, b=1, c=2):
simon = CipherDescription(2*n)
for i in range(n):
input_1 = "s{}".format((i-a)%n+n)
input_2 = "s{}".format((i-b)%n+n)
product = "t{}".format(2*i)
simon.apply_and(input_1, input_2, product)
input_3 = "s{}".format((i-c)%n+n)
xor = "t{}".format(2*i+1)
simon.apply_xor(product, input_3, xor)
right_side = "s{}".format(i)
simon.apply_xor(xor, right_side, right_side)
for i in range(n):
right_side = "s{}".format(i)
left_side = "s{}".format(i+n)
simon.apply_permutation( (right_side, left_side) )
simon.set_rounds(rounds)
return simon
# Update State
acorn.apply_xor("s289", "s235", "t1")
acorn.apply_xor("t1", "s230", "s289")
acorn.apply_xor("s230", "s196", "t1")
acorn.apply_xor("t1", "s193", "s230")
acorn.apply_xor("s193", "s160", "t1")
acorn.apply_xor("t1", "s154", "s193")
acorn.apply_xor("s154", "s111", "t1")
acorn.apply_xor("t1", "s107", "s154")
acorn.apply_xor("s107", "s66", "t1")
acorn.apply_xor("t1", "s61", "s107")
acorn.apply_xor("s61", "s23", "t1")
acorn.apply_xor("t1", "s0", "s61")
# Compute Feedback Bit
# f = s0 + ~s107 + maj(s244, s23, s160) + ch(s230, s111, s66) + s196 + k
maj(acorn, "s244", "s23", "s160", "tmaj2")
ch(acorn, "s230", "s111", "s66", "tch")
acorn.apply_xor("s0", "s107", "t1") # TODO: Add not to second parameter
acorn.apply_xor("t1", "tmaj2", "t2")
acorn.apply_xor("t2", "tch", "t3")
acorn.apply_xor("t3", "s196", "t4")
acorn.apply_xor("t4", "tk", "s0") # s0 gets feedback bit
# Shift everything
permutation = tuple("s{}".format(i) for i in range(292, -1, -1))
acorn.apply_permutation(permutation)
acorn.set_rounds(1536)
from cipher_description import CipherDescription
trivium = CipherDescription(288)
trivium.apply_xor("s65", "s92", "t1")
trivium.apply_xor("s161", "s176", "t2")
trivium.apply_xor("s242", "s287", "t3")
trivium.apply_and("s90", "s91", "tand1")
trivium.apply_and("s174", "s175", "tand2")
trivium.apply_and("s285", "s286", "tand3")
trivium.apply_xor("t1", "tand1", "t1")
trivium.apply_xor("t1", "s170", "s92")
trivium.apply_xor("t2", "tand2", "t2")
trivium.apply_xor("t2", "s263", "s176")
trivium.apply_xor("t3", "tand3", "t3")
trivium.apply_xor("t3", "s68", "s287")
switch_last_bits = ("s92", "s176", "s287")
trivium.apply_permutation(switch_last_bits)
permutation_1 = tuple("s{}".format(i) for i in range(93))
permutation_2 = tuple("s{}".format(i) for i in range(93, 177))
permutation_3 = tuple("s{}".format(i) for i in range(177, 288))
trivium.apply_permutation(permutation_1)
trivium.apply_permutation(permutation_2)
trivium.apply_permutation(permutation_3)
trivium.set_rounds(1152)
from cipher_description import CipherDescription
bivium = CipherDescription(177)
bivium.apply_xor("s65", "s92", "t0")
bivium.apply_and("s90", "s91", "t1")
bivium.apply_xor("t0", "t1", "t2")
bivium.apply_xor("t2", "s170", "s92")
bivium.apply_xor("s161", "s176", "t3")
bivium.apply_and("s174", "s175", "t4")
bivium.apply_xor("t3", "t4", "t5")
bivium.apply_xor("t5", "s68", "s176")
switch_last_bits = ("s92", "s176")
bivium.apply_permutation(switch_last_bits)
permutation_1 = tuple("s{}".format(i) for i in range(93))
permutation_2 = tuple("s{}".format(i) for i in range(93, 177))
bivium.apply_permutation(permutation_1)
bivium.apply_permutation(permutation_2)
bivium.set_rounds(708)