Imports github.com/awesome-chain/Xchain/common github.com/awesome-chain/Xchain/common/math github.com/awesome-chain/Xchain/crypto/secp256k1 github.com/awesome-chain/Xchain/crypto/sha3 github.com/awesome-chain/Xchain/rlp Standard library imports crypto/ecdsa crypto/elliptic crypto/rand encoding/hex errors fmt io io/ioutil math/big os