package ethcrypto

import (
	"code.google.com/p/go.crypto/ripemd160"
	"crypto/sha256"
	"github.com/obscuren/sha3"
	"math/big"
)

func Sha256Bin(data []byte) []byte {
	hash := sha256.Sum256(data)

	return hash[:]
}

func Ripemd160(data []byte) []byte {
	ripemd := ripemd160.New()
	ripemd.Write(data)

	return ripemd.Sum(nil)
}

func Sha3Bin(data []byte) []byte {
	d := sha3.NewKeccak256()
	d.Write(data)

	return d.Sum(nil)
}

// Creates an ethereum address given the bytes and the nonce
func CreateAddress(b []byte, nonce *big.Int) []byte {
	addrBytes := append(b, nonce.Bytes()...)

	return Sha3Bin(addrBytes)[12:]
}