本文实例讲述了php基于openssl的rsa加密解密。分享给大家供大家参考，具体如下：
<?php
$config = array(
//"config" =>"d:/phpserver/lighttpd/openssl.cnf",
//'config' =>'d:/phpstudy/lighttpd/openssl.cnf',
'private_key_bits' => 1024, // size of key.
'private_key_type' => openssl_keytype_rsa
);
//$res = openssl_pkey_new();
$res = openssl_pkey_new($config);
// get private key
// openssl_pkey_export($res, $privkey, "passphrase number 1" );
openssl_pkey_export($res, $privkey);
var_dump($privkey);
// get public key
$pubkey=openssl_pkey_get_details($res);
// echo "------------><br />";
// print_r($pubkey["rsa"]);
// $bin_str=$pubkey["rsa"]["n"];
// print_r($bin_str);
// echo "<br />";
// //echo $bin_hex_str = pack("h*" , bin2hex($bin_str));
// echo $bin_hex_str = bin2hex($bin_str);
// echo "<br />------------<<br />";
$pubkey=$pubkey["key"];
// var_dump($privkey);
// var_dump($pubkey);
echo $privkey."<br /><br />";
echo $pubkey."<br /><br />";
?>
<?php
$private_key = '-----begin rsa private key-----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-----end rsa private key-----';
//$private_key ='-----begin rsa private key-----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//-----end rsa private key-----';
$public_key = '-----begin public key-----
migfma0gcsqgsib3dqebaquaa4gnadcbiqkbgqdnsq4ampze01mpeo9dabrdss0x
wxkekefuowjnefg+na6p52jsisw79qynfqwm7akiappzu0+kkwjtsxidqfuv5y2v
aa3w2tre5n51ucwuk6/lfzhxbg0d+bnlzy6kb6bpgpgvbhaknbvjbcs0v9h4v3wu
tlr9qauj05q8qe70sqidaqab
-----end public key-----';
//$private_key=$privkey;
//$public_key=$pubkey;
$fp=fopen("private_key","w");
fwrite($fp,$private_key);
fclose($fp);
$fp=fopen("public_key","w");
fwrite($fp,$public_key);
fclose($fp);
//echo $private_key;
$pi_key = openssl_pkey_get_private($private_key);//这个函数可用来判断私钥是否是可用的，可用返回资源id resource id
$pu_key = openssl_pkey_get_public($public_key);//这个函数可用来判断公钥是否是可用的
print_r($pi_key);echo "\n";
print_r($pu_key);echo "\n";
echo "<br />----------------------<br />";
$data = "woshizhu";//原始数据
$encrypted = "";
$decrypted = "";
echo "source data:",$data,"<br />";
echo "private key encrypt:\n";
openssl_private_encrypt($data,$encrypted,$pi_key);//私钥加密
$encrypted = base64_encode($encrypted);//加密后的内容通常含有特殊字符，需要编码转换下，在网络间通过url传输时要注意base64编码是否是url安全的
echo "<br />----------私钥加密------------<br />";
echo $encrypted,"<br />";
echo "<br />----------私钥加密------------<br />";
echo "public key decrypt:\n";
$decrypted="";
openssl_public_decrypt(base64_decode($encrypted),$decrypted,$pu_key);//私钥加密的内容通过公钥可用解密出来
echo $decrypted,"\n";
echo "---------------------------------------\n";
echo "public key encrypt:\n";
openssl_public_encrypt($data,$encrypted,$pu_key);//公钥加密
$encrypted = base64_encode($encrypted);
echo $encrypted,"\n";
$decrypted="";
//$encrypted="jbeapcp9iwwyjyelgqtrzxfxm4wvkcasn/ojz7njfr23o76fdbxexpf+pgwacw3petdobwl4108wr3ihkmy2iykiexgjbyyvx2w9ahies8zsoip3ljimhytm93rr8sc5xxhwqc3dhbq16jwhyz2d+rrophd4x84gf3jxwivrgo4=";
echo "private key decrypt:\n";
openssl_private_decrypt(base64_decode($encrypted),$decrypted,$pi_key);//私钥解密
echo "--->:".$decrypted,"\n";
?>
希望本文所述对大家php程序设计有所帮助。
更多php基于openssl的rsa加密解密示例。