RSA加密算法是最常用的非对称加密算法。

下面为详细类、实例:

<?php / RSA算法类 署名及密文编码:base64字符串/十六进制字符串/二进制字符串流 添补办法: 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,以是明文需小于117字节 / class RSA { private $pubKey = null; private $priKey = null; / 布局函数 @param string 公钥文件(验签和加密时传入) @param string 私钥文件(署名和解密时传入) / public function __construct($public_key_file = &#39;', $private_key_file = '') { if ($public_key_file) { $this-&gt;_getPublicKey($public_key_file); } if ($private_key_file) { $this->_getPrivateKey($private_key_file); } } // 私有方法 / 自定义缺点处理 / private function _error($msg) { die('RSA Error:' . $msg); //TODO } / 检测添补类型 加密只支持PKCS1_PADDING 解密支持PKCS1_PADDING和NO_PADDING @param int 添补模式 @param string 加密en/解密de @return bool / private function _checkPadding($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 $ret; } / 天生署名 @param string 署名材料 @param string 署名编码(base64/hex/bin) @return 署名值 / public function sign($data, $code = 'base64') { $ret = false; if (openssl_sign($data, $ret, $this->priKey)) { $ret = $this->_encode($ret, $code); } return $ret; } / 验证署名 @param string 署名材料 @param string 署名值 @param string 署名编码(base64/hex/bin) @return bool / public function verify($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 $ret; } / 加密 @param string 明文 @param string 密文编码(base64/hex/bin) @param int 添补办法(貌似php有bug,以是目前仅支持OPENSSL_PKCS1_PADDING) @return string 密文 / public function encrypt($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 $ret; } / 解密 @param string 密文 @param string 密文编码(base64/hex/bin) @param int 添补办法(OPENSSL_PKCS1_PADDING / OPENSSL_NO_PADDING) @param bool 是否翻转明文(When passing Microsoft CryptoAPI-generated RSA cyphertext, revert the bytes in the block) @return string 明文 / public function decrypt($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), "

<?php / RSA算法类 署名及密文编码:base64字符串/十六进制字符串/二进制字符串流 添补办法: 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,以是明文需小于117字节 / class RSA { private $pubKey = null; private $priKey = null; / 布局函数 @param string 公钥文件(验签和加密时传入) @param string 私钥文件(署名和解密时传入) / public function __construct($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 / 自定义缺点处理 / private function _error($msg) { die('RSA Error:' . $msg); //TODO } / 检测添补类型 加密只支持PKCS1_PADDING 解密支持PKCS1_PADDING和NO_PADDING @param int 添补模式 @param string 加密en/解密de @return bool / private function _checkPadding($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 $ret; } / 天生署名 @param string 署名材料 @param string 署名编码(base64/hex/bin) @return 署名值 / public function sign($data, $code = 'base64') { $ret = false; if (openssl_sign($data, $ret, $this->priKey)) { $ret = $this->_encode($ret, $code); } return $ret; } / 验证署名 @param string 署名材料 @param string 署名值 @param string 署名编码(base64/hex/bin) @return bool / public function verify($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 $ret; } / 加密 @param string 明文 @param string 密文编码(base64/hex/bin) @param int 添补办法(貌似php有bug,以是目前仅支持OPENSSL_PKCS1_PADDING) @return string 密文 / public function encrypt($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 $ret; } / 解密 @param string 密文 @param string 密文编码(base64/hex/bin) @param int 添补办法(OPENSSL_PKCS1_PADDING / OPENSSL_NO_PADDING) @param bool 是否翻转明文(When passing Microsoft CryptoAPI-generated RSA cyphertext, revert the bytes in the block) @return string 明文 / public function decrypt($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), "\0") : '' . $result; } } return $ret; } }

利用方法

") : '' . $result; } } return $ret; } }

利用方法

phprsa加密PHP开辟接口应用RSA进行加密解密办法 SQL

<?php header('Content-Type:text/html;Charset=utf-8;'); include "RSA.php"; echo '<pre>'; $pubfile = 'E:\ddd\rsa_public_key.pem'; $prifile = 'E:\ddd\rsa_private_key.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); //解密 $ret_d = $rsa->decrypt($ret_e); echo $ret_e; echo '<pre>'; echo $ret_d; echo '<pre>'; $a = 'test'; //署名 $x = $rsa->sign($a); //验证 $y = $rsa->verify($a, $x); var_dump($x, $y); exit;