---

layout: post
categories: zlib golang php
title: Golang PHP zlib (php)加密<=>解密(go).
date: 2018-11-08 20:14:05 +0800
description: text zlib and deflate. php 加密 Golang 解密

keywords: php golang zlib加密解密

这个问题是来自一个群友的，一开始马虎大意 后来解决问题。

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Golang 代码

package main  
  
import (  
	"bytes"  
	"compress/zlib"  
	"encoding/base64"  
	"fmt"  
	"io"  
)  
//进行zlib压缩  
func DoZlibCompress(src []byte) []byte {  
	var in bytes.Buffer  
	w, _ := zlib.NewWriterLevelDict(&in,-1,src)  
	w.Write(src)  
	w.Close()  
	return in.Bytes()  
}  
  
func DoZlibCompress2(src []byte) []byte {  
	var bufs bytes.Buffer  
	w, _ := zlib.NewWriterLevel(&bufs, -1)  
	w.Write(src)  
	defer w.Flush()  
		w.Close()  
	return bufs.Bytes()  
}  
  
//进行zlib解压缩  
func DoZlibUnCompress(compressSrc []byte) []byte {  
	b := bytes.NewReader(compressSrc)  
	var out bytes.Buffer  
	r, _ := zlib.NewReader(b)  
	io.Copy(&out, r)  
	return out.Bytes()  
}  
  
func main() {  
	//buff, _ := base64.StdEncoding.DecodeString("eJxLTEoGAAJNASc=")  
	buff, _ := base64.StdEncoding.DecodeString("eJxKTEoGBAAA//8CTQEn")  
	fmt.Println(string(DoZlibUnCompress(buff)))  
  
  
  
	//zip := DoZlibCompress([]byte("abc"))  
	zip := DoZlibCompress2([]byte("abc"))  
	fmt.Println(zip)  
  
	fmt.Println(base64.StdEncoding.EncodeToString(zip))  
  
	//  
	//fmt.Println(string(DoZlibUnCompress(zip)))  
}  
  
...  
abc  
[120 156 74 76 74 6 4 0 0 255 255 2 77 1 39]  
eJxKTEoGBAAA//8CTQEn  

PHP 代码

  
<?php  
  
$code =zlib_encode("abc",ZLIB_ENCODING_DEFLATE);  
$code = base64_encode($code);  
echo  "$code";  
// eJxLTEoGAAJNASc=  
  
$code = bin2hex($code);  
echo  "$code";  
// 654a784c54456f4741414a4e4153633d  
  
?>  

疑问

• 为什么种方式加密的hex 不一致解析的结果却是一致的。
  
• Golang 是对Zlib 进行了哪些优化？
  

测试地址。> http://www.txtwizard.net/compression

https://stackoverflow.com/questions/40893411/golang-python-zlib-difference

https://stackoverflow.com/questions/52767214/compressed-output-differs-from-go-to-ruby-implementation

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