package Ġorg . ke thereum . crypto Ċ Ċ import Ġorg . ke thereum . extensions . to HexString Zero P added Ċ import Ġorg . ke thereum . model . Signature Data Ċ import Ġorg . w alle th . k hex . to HexString Ċ import Ġjava . math . BigInteger Ċ Ċ fun ĠSignature Data . to Hex () Ġ= Ġr . to 6 4 Byte P added Hex () Ġ+ Ġs . to 6 4 Byte P added Hex () Ġ+ Ġv . to HexString () Ċ Ċ private Ġfun ĠBigInteger . to 6 4 Byte P added Hex () Ġ= Ġto HexString Zero P added ( 6 4 , Ġfalse )