openssl_private

Description

bool openssl_private_encrypt ( string data, string &crypted, mixed key [, int padding] )

openssl_private_encrypt() encrypts data with private key and stores the result into crypted. Encrypted data can be decrypted via openssl_public_decrypt(). padding defaults to OPENSSL_PKCS1_PADDING, but can also be OPENSSL_NO_PADDING.

如果成功则返回 TRUE，失败则返回 FALSE。

This function can be used e.g. to sign data (or its hash) to prove that it is not written by someone else.

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wfredkNOSPAM at L5DevelopmentNOSPAM dot com
09-Mar-2002 07:50


Encrypt using private key, decrypt using public key.





Use this for posting signed messages:  Anyone with access to


your public key can read it, but they can't create one with


your signature.





<?php


echo "Source: $source";


$fp=fopen("/path/to/private.key","r");


$priv_key=fread($fp,8192);


fclose($fp);


// $passphrase is required if your key is encoded (suggested)


$res = openssl_get_privatekey($priv_key,$passphrase);


/*


 * NOTE:  Here you use the returned resource value


 */


openssl_private_encrypt($source,$crypttext,$res);


echo "String crypted: $crypttext";





$fp=fopen ("/path/to/certificate.crt","r");


$pub_key=fread($fp,8192);


fclose($fp);


openssl_get_publickey($pub_key);


/*


 * NOTE:  Here you use the $pub_key value (converted, I guess)


 */


openssl_public_decrypt($crypttext,$newsource,$pub_key);


echo "String decrypt : $newsource";


?>

billnet at tiscalinet dot it
29-Jan-2002 02:47


<?php

$fp=fopen ("/path/to/key.pem","r");

$priv_key=fread ($fp,8192);

fclose($fp);

openssl_get_privatekey ($priv_key);

openssl_private_encrypt($source,$finaltext,$priv_key);

echo "String crypted: $finaltext";

?>



CIAO !

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