php rsa

<?php

$res=openssl_pkey_new();

// Get private key
$ok = openssl_pkey_export($res, $privkey);

// Get public key
$pubkey=openssl_pkey_get_details($res);
$pubkey=$pubkey["key"];

//var_dump($privkey, $pubkey);
var_dump($ok);

$data = '我用iphone手機！';

//能夠用base64_decode用於url傳輸， 或者用 bin2hex($out);

/*
//公鑰加密給私鑰解密
openssl_public_encrypt($data, $encrypted, $pubkey);
var_dump('公鑰加密', $encrypted);
//私鑰解密
openssl_private_decrypt($encrypted, $decrypted, $privkey);
var_dump($decrypted);

//私鑰加密，給公鑰解密
openssl_private_encrypt($data, $encrypted, $privkey);
var_dump('私鑰加密', $encrypted);
//給公鑰解密
openssl_public_decrypt($encrypted, $decryptedPub, $pubkey);
var_dump($decryptedPub);
*/

//效驗方式

//$privkey = openssl_pkey_get_private($privkey);   //若是是不信任的字符串，能夠經過此函數驗證，經過返回密鑰
openssl_sign($data, $signature, $privkey, OPENSSL_ALGO_SHA256);
//echo bin2hex($signature);

//save for later
//file_put_contents('private_key.pem', $private_key_pem);
//file_put_contents('public_key.pem', $public_key_pem);
//file_put_contents('signature.dat', $signature);

//verify signature
//hex2bin($signature);
//$pubkey = openssl_pkey_get_public($pubkey);      //若是是不信任的字符串，能夠經過此函數驗證，經過返回密鑰
$r = openssl_verify($data, $signature, $pubkey, "sha256WithRSAEncryption");
var_dump($signature, $r);

 

若是公鑰、私鑰生成失敗，則是openssl.cnf路徑配置失敗。