question: public static BigInteger [ ] transformRawSignature ( byte [ ] raw ) throws IOException { BigInteger [ ] output = new BigInteger [ 2 ] ; output [ 0 ] = new BigInteger ( 1 , Arrays . copyOfRange ( raw , 0 , 32 ) ) ; output [ 1 ] = new BigInteger ( 1 , Arrays . copyOfRange ( raw , 32 , 64 ) ) ; return output ; }
target:  From byte[] to Big Integers r,s UAF_ALG_SIGN_SECP256K1_ECDSA_SHA256_RAW 0x05 An ECDSA signature on the secp256k1 curve which must have raw R and S buffers, encoded in big-endian order. I.e.[R (32 bytes), S (32 bytes)]