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fix fri test with permuted merkle tree #139

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fix fri test with permuted merkle tree #139

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8 changes: 5 additions & 3 deletions mimc_stark/test.py
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Original file line number Diff line number Diff line change
@@ -1,6 +1,7 @@
from fft import fft
from mimc_stark import mk_mimc_proof, modulus, mimc, verify_mimc_proof
from merkle_tree import merkelize, mk_branch, verify_branch, bin_length
from permuted_tree import merkelize as pmerkelize
from fri import prove_low_degree, verify_low_degree_proof

def test_merkletree():
Expand All @@ -19,17 +20,17 @@ def test_fri():
evaluations = fft(poly, modulus, root_of_unity)
proof = prove_low_degree(evaluations, root_of_unity, 4096, modulus)
print("Approx proof length: %d" % fri_proof_bin_length(proof))
assert verify_low_degree_proof(merkelize(evaluations)[1], root_of_unity, proof, 4096, modulus)
assert verify_low_degree_proof(pmerkelize(evaluations)[1], root_of_unity, proof, 4096, modulus)

try:
fakedata = [x if pow(3, i, 4096) > 400 else 39 for x, i in enumerate(evaluations)]
proof2 = prove_low_degree(fakedata, root_of_unity, 4096, modulus)
assert verify_low_degree_proof(merkelize(fakedata)[1], root_of_unity, proof, 4096, modulus)
assert verify_low_degree_proof(pmerkelize(fakedata)[1], root_of_unity, proof, 4096, modulus)
raise Exception("Fake data passed FRI")
except:
pass
try:
assert verify_low_degree_proof(merkelize(evaluations)[1], root_of_unity, proof, 2048, modulus)
assert verify_low_degree_proof(pmerkelize(evaluations)[1], root_of_unity, proof, 2048, modulus)
raise Exception("Fake data passed FRI")
except:
pass
Expand All @@ -50,4 +51,5 @@ def test_stark():
assert verify_mimc_proof(3, 2**LOGSTEPS, constants, mimc(3, 2**LOGSTEPS, constants), proof)

if __name__ == '__main__':
test_fri()
test_stark()