CuteBi_XorCrypt.go

// CuteBi_XorCrypt.go
package main

import (
	"encoding/base64"
	"errors"
)

var CuteBi_XorCrypt_password []byte = nil

/* 一个简单的异或加密 */
func CuteBi_XorCrypt(data []byte, passwordSub int) int {
	var dataLen = len(data)
	if dataLen <= 0 {
		return passwordSub
	} else {
		var passLen = len(CuteBi_XorCrypt_password)
		var pi = passwordSub
		for dataSub := 0; dataSub < dataLen; dataSub++ {
			pi = (dataSub + passwordSub) % passLen
			data[dataSub] ^= CuteBi_XorCrypt_password[pi] | byte(pi)
		}
		return pi + 1
	}
}

func CuteBi_decrypt_host(host []byte) ([]byte, error) {
	var hostDec = make([]byte, len(host))
	var n, err = base64.StdEncoding.Decode(hostDec, host)
	if err == nil {
		CuteBi_XorCrypt(hostDec, 0)
		if hostDec[n-1] == 0 {
			return hostDec[:n-1], nil
		} else {
			return nil, errors.New("host decrypt failed")
		}
	} else {
		return nil, err
	}
}