62 lines
984 B
Go
62 lines
984 B
Go
|
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.Reset()
|
||
|
|
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)
|
||
|
|
}
|