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nihalpasham/example_glfsr.py

Last active April 5, 2020 07:50
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Google pay's -DSSS code sequence
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example_glfsr.py
code = [0, 0, 0, 0, 1, 0, 1, 0, 1, 1, 0, 0, 0, 1, 0, 0, 1, 1, 1, 1,
0, 0, 1, 0, 1, 0, 0, 1, 0, 0, 1, 0, 1, 1, 0, 1, 0, 1, 0, 1,
0, 0, 0, 0, 0, 1, 1, 0, 0, 1, 0, 0, 0, 0, 1, 1, 1, 0, 1, 0,
1, 1, 1, 0, 0, 1, 1, 1, 0, 0, 0, 1, 1, 0, 1, 1, 0, 0, 1, 1,
0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 1, 1, 1, 1, 0, 1, 0, 0, 1,
1, 0, 1, 0, 0, 0, 1, 0, 1, 1, 1, 1, 0, 1, 1, 0, 1, 1, 1, 0,
1, 1, 1, 1, 1, 1, 1]
degree = 7
# print(u)
for mask in range (0, 127):
for seed in range(1, 127):
wq = []
seq = np.array(glfsr(degree, mask, seed))
if np.array_equal(seq, code):
print(seed)
print(mask)
Output--
>> 80
>> 120
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