def slices():
ret = []
for case in seeks():
size = case["input_len"]
offsets = case["seek_offsets"]
b = input_bytes(size)
encoded = bao.bao_encode(b)
slices = []
for offset in offsets:
slice_bytes = io.BytesIO()
slice_len = 2 * CHUNK_SIZE
bao.bao_slice(io.BytesIO(encoded), slice_bytes, offset, slice_len)
slice_hash = blake2b_hash(slice_bytes.getbuffer())
fields = [
("start", offset),
("len", slice_len),
("output_len", len(slice_bytes.getbuffer())),
("output_blake2b", slice_hash),
("corruptions",
slice_corruption_points(size, offset, slice_len)),
]
slices.append(OrderedDict(fields))
fields = [
("input_len", size),
("bao_hash", bao.bao_hash(io.BytesIO(b)).hex()),
("slices", slices),
]
ret.append(OrderedDict(fields))
return ret
def bao_slice_outboard(content, outboard, slice_start, slice_len):
output = io.BytesIO()
bao.bao_slice(io.BytesIO(content),
output,
slice_start,
slice_len,
outboard_stream=io.BytesIO(outboard))
return output.getvalue()
def bao_slice(encoded, slice_start, slice_len):
output = io.BytesIO()
bao.bao_slice(io.BytesIO(encoded), output, slice_start, slice_len)
return output.getvalue()