65 lines
1.0 KiB
Go
65 lines
1.0 KiB
Go
package ethutil
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import (
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"code.google.com/p/go.crypto/ripemd160"
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"crypto/sha256"
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"encoding/hex"
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"github.com/obscuren/sha3"
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"strconv"
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)
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func Uitoa(i uint32) string {
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return strconv.FormatUint(uint64(i), 10)
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}
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func Sha256Bin(data []byte) []byte {
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hash := sha256.Sum256(data)
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return hash[:]
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}
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func Ripemd160(data []byte) []byte {
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ripemd := ripemd160.New()
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ripemd.Write(data)
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return ripemd.Sum(nil)
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}
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func Sha3Bin(data []byte) []byte {
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d := sha3.NewKeccak256()
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d.Write(data)
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return d.Sum(nil)
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}
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// Helper function for comparing slices
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func CompareIntSlice(a, b []int) bool {
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if len(a) != len(b) {
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return false
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}
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for i, v := range a {
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if v != b[i] {
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return false
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}
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}
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return true
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}
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// Returns the amount of nibbles that match each other from 0 ...
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func MatchingNibbleLength(a, b []int) int {
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i := 0
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for CompareIntSlice(a[:i+1], b[:i+1]) && i < len(b) {
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i += 1
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}
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return i
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}
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func Hex(d []byte) string {
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return hex.EncodeToString(d)
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}
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func FromHex(str string) []byte {
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h, _ := hex.DecodeString(str)
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return h
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}
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