common: Address.Hex() outputs EIP55-compliant string

pull/14815/head
Jim McDonald 7 years ago
parent 0ff35e170d
commit 9e80d9bee1
  1. 24
      common/types.go

@ -24,6 +24,7 @@ import (
"reflect"
"github.com/ethereum/go-ethereum/common/hexutil"
"github.com/ethereum/go-ethereum/crypto/sha3"
)
const (
@ -163,7 +164,28 @@ func (a Address) Str() string { return string(a[:]) }
func (a Address) Bytes() []byte { return a[:] }
func (a Address) Big() *big.Int { return new(big.Int).SetBytes(a[:]) }
func (a Address) Hash() Hash { return BytesToHash(a[:]) }
func (a Address) Hex() string { return hexutil.Encode(a[:]) }
// Hex returns an EIP55-compliant hex string representation of the address.
func (a Address) Hex() string {
unchecksummed := hex.EncodeToString(a[:])
sha := sha3.NewKeccak256()
sha.Write([]byte(unchecksummed))
hash := sha.Sum(nil)
result := []byte(unchecksummed)
for i := 0; i < len(result); i++ {
hashByte := hash[i/2]
if i%2 == 0 {
hashByte = hashByte >> 4
} else {
hashByte &= 0xf
}
if result[i] > '9' && hashByte > 7 {
result[i] -= 32
}
}
return "0x" + string(result)
}
// String implements the stringer interface and is used also by the logger.
func (a Address) String() string {

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