Home Backend Development PHP Tutorial PHP进行RSA加密解密

PHP进行RSA加密解密

Jun 23, 2016 pm 01:24 PM

最近在着手写一个服务端安全接口规范,需要用到RSA加密解密。所以小试牛刀一下,并且做个记录。

环境:   Win7 64位

             PHP 5.6.12

需要原型工具:

OpenSSL下载地址:http://slproweb.com/products/Win32OpenSSL.html

一、安装OpenSSL

随意安装到哪里

二、进入到OpenSLL的bin目录下进行私钥和公钥的生成

//生成私钥openssl genrsa -out rsa_private_key.pem 1024 //生成公钥openssl rsa -in rsa_private_key.pem -pubout -out rsa_public_key.pem
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将生产的私钥、公钥拷贝到你的PHP项目中

三、开启PHP的OpenSSL扩展

将php.ini中的extension=php_openssl.dll开启(去掉;)

四、PHP加密解密练习

<?php/* * RSA加密解密 *  * @auther  ken<695093513@qq.com> * @time    2015-10-13 */namespace App\Models;class RsaCrypt {    const PRIVATE_KEY_FILE_PATH = 'app\Certificate\rsa_private_key.pem';    const PUBLIC_KEY_FILE_PATH = 'app\Certificate\rsa_public_key.pem';    /**     * Rsa加密     * @param string $orignData     * @return string     */    public static function encode($orignData) {        //密钥文件的路径        $privateKeyFilePath = self::PRIVATE_KEY_FILE_PATH;        extension_loaded('openssl') or die('php需要openssl扩展支持');        (file_exists($privateKeyFilePath)) or die('密钥的文件路径不正确');        //生成Resource类型的密钥,如果密钥文件内容被破坏,openssl_pkey_get_private函数返回false        $privateKey = openssl_pkey_get_private(file_get_contents($privateKeyFilePath));        ($privateKey) or die('密钥不可用');        //加密以后的数据,用于在网路上传输        $encryptData = '';        ///////////////////////////////用私钥加密////////////////////////        if (openssl_private_encrypt($orignData, $encryptData, $privateKey)) {            return $encryptData;        } else {            die('加密失败');        }    }    /**     * Rsa解密     * @param string $encryptData     * @return string     */    public static function decode($encryptData) {        //公钥文件的路径        $publicKeyFilePath = self::PUBLIC_KEY_FILE_PATH;        extension_loaded('openssl') or die('php需要openssl扩展支持');        (file_exists($publicKeyFilePath)) or die('公钥的文件路径不正确');        //生成Resource类型的公钥,如果公钥文件内容被破坏,openssl_pkey_get_public函数返回false        $publicKey = openssl_pkey_get_public(file_get_contents($publicKeyFilePath));        ($publicKey) or die('公钥不可用');        //解密以后的数据        $decryptData = '';        ///////////////////////////////用公钥解密////////////////////////        if (openssl_public_decrypt($encryptData, $decryptData, $publicKey)) {            return $decryptData;        } else {            die('解密失败');        }    }}
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附录:

一、在Win下面使用生成私钥的时候遇到一个BUG:

错误:

WARNING: can't open config file: /usr/local/ssl/openssl.cnfLoading 'screen' into random state - doneGenerating RSA private key, 1024 bit long modulus.........++++++.........................................++++++unable to write 'random state'e is 65537 (0x10001)
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解决办法:

在CMD中进行如下操作

set OPENSSL_CONF=c:\OpenSSL-Win32\bin\openssl.cfg
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或者

set OPENSSL_CONF=[path-to-OpenSSL-install-dir]\bin\openssl.cfg
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PS:[path-to-OpenSSL-install-dir]为你的OpenSSL路径


二、参考资料:

http://php.net/manual/en/book.openssl.php

http://www.jb51.net/article/64963.htm

http://stackoverflow.com/questions/16658038/cant-open-config-file-usr-local-ssl-openssl-cnf-on-windows

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