byte1 = [True,False,False,True,True,False,False,False]
byte2 = [False,False,False,True,True,False,True,False]

def convertbyte(x):
	return x[7]+2*x[6]+4*x[5]+8*x[4]+16*x[3]+32*x[2]+64*x[1]+128*x[0]

def converttobyte(n):
	return [1==n%256/128,1==n%128/64,1==n%64/32,1==n%32/16,1==n%16/8,1==n%8/4,1==n%4/2,1==n%2]

def addc(a,b,c):
	bit = (a and not b and not c) or (not a and b and not c) or (not a and not b and c) or (a and b and c)
	carry = (a and b and not c) or (a and not b and c) or (not a and b and c) or (a and b and c)
	return([carry, bit])

def addbyte(x,y):
	z = [0]*8
	sum7 = addc(x[7],y[7],0)
	z[7] = sum7[1]
	sum6 = addc(x[6],y[6],sum7[0])
	z[6] = sum6[1]
	sum5 = addc(x[5],y[5],sum6[0])
	z[5] = sum5[1]
	sum4 = addc(x[4],y[4],sum5[0])
	z[4] = sum4[1]
	sum3 = addc(x[3],y[3],sum4[0])
	z[3] = sum3[1]
	sum2 = addc(x[2],y[2],sum3[0])
	z[2] = sum2[1]
	sum1 = addc(x[1],y[1],sum2[0])
	z[1] = sum1[1]
	sum0 = addc(x[0],y[0],sum1[0])
	z[0] = sum0[1]
	return z

# input is a list of 5 bytes
def DE(numlist):
	[a1,b1,c1,d1,e1] = numlist
	e2 = e1
	d2 = addbyte(d1,e1)
	c2 = addbyte(c1,d1)
	b2 = addbyte(b1,c1)
	a2 = addbyte(a1,b1)
	return [a2,b2,c2,d2,e2]

# [convertbyte(b) for b in DE(DE(DE([converttobyte(1),converttobyte(2),converttobyte(1),converttobyte(0),converttobyte(0)])))]