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fix st_fuzzed_sig #150

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Merged
merged 1 commit into from
Oct 30, 2019
Merged

fix st_fuzzed_sig #150

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13 changes: 7 additions & 6 deletions src/ecdsa/test_malformed_sigs.py
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Original file line number Diff line number Diff line change
Expand Up @@ -82,12 +82,13 @@ def st_fuzzed_sig(draw, keys_and_sigs):
note("Remove bytes: {0}".format(to_remove))

# decide which bytes of the original signature should be changed
xors = draw(st.dictionaries(
st.integers(min_value=0, max_value=len(sig)-1),
st.integers(min_value=1, max_value=255)))
for i, val in xors.items():
sig[i] ^= val
note("xors: {0}".format(xors))
if sig:
xors = draw(st.dictionaries(
st.integers(min_value=0, max_value=len(sig)-1),
st.integers(min_value=1, max_value=255)))
for i, val in xors.items():
sig[i] ^= val
note("xors: {0}".format(xors))

# decide where new data should be inserted
insert_pos = draw(st.integers(min_value=0, max_value=len(sig)))
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