在线生成私钥秘钥地址
http://web.chacuo.net/netrsakeypair 可以生成密钥对
RSA.php
<?php /** * RSA算法类 * 签名及密文编码:base64字符串/十六进制字符串/二进制字符串流 * 填充方式: PKCS1Padding(加解密)/NOPadding(解密) * * Notice:Only accepts a single block. Block size is equal to the RSA key size! * 如密钥长度为1024 bit,则加密时数据需小于128字节,加上PKCS1Padding本身的11字节信息,所以明文需小于117字节 * */ class RSA { private $pubKey = null; private $priKey = null; /** * 构造函数 * * @param string 公钥文件(验签和加密时传入) * @param string 私钥文件(签名和解密时传入) */ public function __construct($public_key_file = '', $private_key_file = '') { if ($public_key_file) { $this->_getPublicKey($public_key_file); } if ($private_key_file) { $this->_getPrivateKey($private_key_file); } } // 私有方法 /** * 自定义错误处理 */ private function _error($msg) { die('RSA Error:' . $msg); //TODO } /** * 检测填充类型 * 加密只支持PKCS1_PADDING * 解密支持PKCS1_PADDING和NO_PADDING * * @param int 填充模式 * @param string 加密en/解密de * @return bool */ private function _checkPadding($padding, $type) { if ($type == 'en') { switch ($padding) { case OPENSSL_PKCS1_PADDING: $ret = true; break; default: $ret = false; } } else { switch ($padding) { case OPENSSL_PKCS1_PADDING: case OPENSSL_NO_PADDING: $ret = true; break; default: $ret = false; } } return $ret; } private function _encode($data, $code) { switch (strtolower($code)) { case 'base64': $data = base64_encode('' . $data); break; case 'hex': $data = bin2hex($data); break; case 'bin': default: } return $data; } private function _decode($data, $code) { switch (strtolower($code)) { case 'base64': $data = base64_decode($data); break; case 'hex': $data = $this->_hex2bin($data); break; case 'bin': default: } return $data; } private function _getPublicKey($file) { $key_content = $this->_readFile($file); if ($key_content) { $this->pubKey = openssl_get_publickey($key_content); } } private function _getPrivateKey($file) { $key_content = $this->_readFile($file); if ($key_content) { $this->priKey = openssl_get_privatekey($key_content); } } private function _readFile($file) { $ret = false; if (!file_exists($file)) { $this->_error("The file {$file} is not exists"); } else { $ret = file_get_contents($file); } return $ret; } private function _hex2bin($hex = false) { $ret = $hex !== false && preg_match('/^[0-9a-fA-F]+$/i', $hex) ? pack("H*", $hex) : false; return $ret; } /** * 生成签名 * * @param string 签名材料 * @param string 签名编码(base64/hex/bin) * @return 签名值 */ public function sign($data, $code = 'base64') { $ret = false; if (openssl_sign($data, $ret, $this->priKey)) { $ret = $this->_encode($ret, $code); } return $ret; } /** * 验证签名 * * @param string 签名材料 * @param string 签名值 * @param string 签名编码(base64/hex/bin) * @return bool */ public function verify($data, $sign, $code = 'base64') { $ret = false; $sign = $this->_decode($sign, $code); if ($sign !== false) { switch (openssl_verify($data, $sign, $this->pubKey)) { case 1: $ret = true; break; case 0: case -1: default: $ret = false; } } return $ret; } /** * 加密 * * @param string 明文 * @param string 密文编码(base64/hex/bin) * @param int 填充方式(貌似php有bug,所以目前仅支持OPENSSL_PKCS1_PADDING) * @return string 密文 */ public function encrypt($data, $code = 'base64', $padding = OPENSSL_PKCS1_PADDING) { $ret = false; if (!$this->_checkPadding($padding, 'en')) $this->_error('padding error'); if (openssl_public_encrypt($data, $result, $this->pubKey, $padding)) { $ret = $this->_encode($result, $code); } return $ret; } /** * 解密 * * @param string 密文 * @param string 密文编码(base64/hex/bin) * @param int 填充方式(OPENSSL_PKCS1_PADDING / OPENSSL_NO_PADDING) * @param bool 是否翻转明文(When passing Microsoft CryptoAPI-generated RSA cyphertext, revert the bytes in the block) * @return string 明文 */ public function decrypt($data, $code = 'base64', $padding = OPENSSL_PKCS1_PADDING, $rev = false) { $ret = false; $data = $this->_decode($data, $code); if (!$this->_checkPadding($padding, 'de')) $this->_error('padding error'); if ($data !== false) { if (openssl_private_decrypt($data, $result, $this->priKey, $padding)) { $ret = $rev ? rtrim(strrev($result), " ") : '' . $result; } } return $ret; } }
用代码表示
<?php header('Content-Type:text/html;Charset=utf-8;'); include "RSA.php"; echo '<pre>'; $pubfile = 'F:code est sakeypub.pem'; $prifile = 'F:code est sakeypri.pem'; $rsa = new RSA($pubfile, $prifile); $rst = array( 'ret' => 200, 'code' => 1, 'data' => array(1, 2, 3, 4, 5, 6), 'msg' => "success", ); $ex = json_encode($rst); //加密 $ret_e = $rsa->encrypt($ex); $ret_e = 'X0BaXYEFHrR0Ls/ESD5T1IL4/AuRnSUy2VQ/1TgFT62np/sfurHmN/iFN4zJM+eP6A8OnBIJ0GZuUAr/Qn7GGfx8IrsGSkHBQgvS5T/0tWc5o2dqH5tWlQ/wXepjC3ewV73N+yFS3rzvtYxE6jP+88vsDHSAMB8P4qFWISR4cOs='; //解密 $ret_d = $rsa->decrypt($ret_e); echo $ret_e; echo '<pre>'; echo $ret_d; echo '<pre>'; $a = 'test'; //签名 $x = $rsa->sign($a); //验证 $y = $rsa->verify($a, $x); var_dump($x, $y); exit;