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secret_sharing_lab.py
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secret_sharing_lab.py
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# version code c2eb1c41017f+
# Please fill out this stencil and submit using the provided submission script.
import random
from GF2 import one
from vecutil import list2vec
from vec import Vec
## 1: (Task 7.7.1) Choosing a Secret Vector
def randGF2(): return random.randint(0,1)*one
a0 = list2vec([one, one, 0, one, 0, one])
b0 = list2vec([one, one, 0, 0, 0, one])
def choose_secret_vector(s,t):
secret_list=[0 for x in range(0,6)]
#print ("Init1")
for i in range(0,6):
secret_list[i]=randGF2();
secret_vec=list2vec(secret_list)
#print ("Init2")
while (a0*secret_vec!=s or b0*secret_vec!=t): #Dont use AND because the while loop should go as long as even one of the conditions is true
for i in range(0,6):
secret_list[i]=randGF2()
#print ("Iteration")
secret_vec=list2vec(secret_list)
return secret_vec
## 2: (Task 7.7.2) Finding Secret Sharing Vectors
# Give each vector as a Vec instance
"""secret_a0 = ...
secret_b0 = ...
secret_a1 = ...
secret_b1 = ...
secret_a2 = ...
secret_b2 = ...
secret_a3 = ...
secret_b3 = ...
secret_a4 = ...
secret_b4 = ...
"""