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package ethutil
import (
"code.google.com/p/go.crypto/ripemd160"
"crypto/sha256"
"encoding/hex"
"github.com/obscuren/sha3"
"strconv"
)
func Uitoa(i uint32) string {
return strconv.FormatUint(uint64(i), 10)
}
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)
}
// Helper function for comparing slices
func CompareIntSlice(a, b []int) bool {
if len(a) != len(b) {
return false
}
for i, v := range a {
if v != b[i] {
return false
}
}
return true
}
// Returns the amount of nibbles that match each other from 0 ...
func MatchingNibbleLength(a, b []int) int {
i := 0
for CompareIntSlice(a[:i+1], b[:i+1]) && i < len(b) {
i += 1
}
return i
}
func Hex(d []byte) string {
return hex.EncodeToString(d)
}
func FromHex(str string) []byte {
h, _ := hex.DecodeString(str)
return h
}
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