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blockchainethereumsmart-contractssoliditysecurityprogram-analysissecurity-analysissymbolic-execution
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60 lines
2.0 KiB
60 lines
2.0 KiB
import pytest
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from eth_utils import big_endian_to_int, decode_hex
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from mythril.laser.ethereum.natives import mod_exp
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EIP198_VECTOR_A = decode_hex(
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"0000000000000000000000000000000000000000000000000000000000000001"
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"0000000000000000000000000000000000000000000000000000000000000020"
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"0000000000000000000000000000000000000000000000000000000000000020"
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"03"
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"fffffffffffffffffffffffffffffffffffffffffffffffffffffffefffffc2e"
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"fffffffffffffffffffffffffffffffffffffffffffffffffffffffefffffc2f"
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)
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EIP198_VECTOR_B = decode_hex(
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"0000000000000000000000000000000000000000000000000000000000000000"
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"0000000000000000000000000000000000000000000000000000000000000020"
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"0000000000000000000000000000000000000000000000000000000000000020"
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"fffffffffffffffffffffffffffffffffffffffffffffffffffffffefffffc2e"
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"fffffffffffffffffffffffffffffffffffffffffffffffffffffffefffffc2f"
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)
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EIP198_VECTOR_C = decode_hex(
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"0000000000000000000000000000000000000000000000000000000000000001"
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"0000000000000000000000000000000000000000000000000000000000000002"
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"0000000000000000000000000000000000000000000000000000000000000020"
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"03"
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"ffff"
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"8000000000000000000000000000000000000000000000000000000000000000"
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"07"
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)
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EIP198_VECTOR_D = decode_hex(
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"0000000000000000000000000000000000000000000000000000000000000001"
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"0000000000000000000000000000000000000000000000000000000000000002"
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"0000000000000000000000000000000000000000000000000000000000000020"
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"03"
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"ffff"
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"80"
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)
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@pytest.mark.parametrize(
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"data,expected",
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(
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(EIP198_VECTOR_A, 1),
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(EIP198_VECTOR_B, 0),
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(
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EIP198_VECTOR_C,
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26689440342447178617115869845918039756797228267049433585260346420242739014315,
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),
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(
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EIP198_VECTOR_D,
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26689440342447178617115869845918039756797228267049433585260346420242739014315,
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),
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),
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)
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def test_modexp_result(data, expected):
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actual = mod_exp(data)
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assert big_endian_to_int(actual) == expected
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