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Only decode correctly encoded negative binaries

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This commit is contained in:
Thomas Arts 2019-05-29 08:21:25 +02:00
parent ec0af8046a
commit f7a4c40c50
1 changed files with 6 additions and 1 deletions
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7
src/aeb_fate_encoding.erl
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@ -318,7 +318,12 @@ deserialize2(<<?POS_BIG_INT, Rest/binary>>) ->
Rest2};
deserialize2(<<?NEG_BITS, Rest/binary>>) ->
{Bint, Rest2} = aeser_rlp:decode_one(Rest),
{?FATE_BITS(-binary:decode_unsigned(Bint)), Rest2};
case binary:decode_unsigned(Bint) of
Pos when Pos > 0 ->
{?FATE_BITS(-Pos), Rest2};
N ->
error({illegal_parameter, neg_bits, N})
end;
deserialize2(<<?POS_BITS, Rest/binary>>) ->
{Bint, Rest2} = aeser_rlp:decode_one(Rest),
{?FATE_BITS(binary:decode_unsigned(Bint)), Rest2};