openssl_private

Description

bool openssl_private_decrypt ( string data, string &decrypted, mixed key [, int padding] )

openssl_private_decrypt() decrypts data that was previous encrypted via openssl_public_encrypt() and stores the result into decrypted. key must be the private key corresponding that was used to encrypt the data. padding defaults to OPENSSL_PKCS1_PADDING, but can also be one of OPENSSL_SSLV23_PADDING, OPENSSL_PKCS1_OAEP_PADDING, OPENSSL_NO_PADDING.

如果成功则返回 TRUE，失败则返回 FALSE。

You can use this function e.g. to decrypt data which were supposed only to you.

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wfredkNOSPAM at L5DevelopmentNOSPAM dot com
09-Mar-2002 07:58


Encrypt using public key, decrypt using private key.



Use this to store stuff in your database: Unless someone

has your private key, the database contents are useless.



Also, use this for sending to a specific individual:  Get

their public key, encrypt the message, only they can use

their private key to decode it.



<?php

echo "Source: $source";

$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_encrypt($source,$crypttext,$pub_key);

echo "String crypted: $crypttext";



$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_decrypt($crypttext,$newsource,$res);

echo "String decrypt : $newsource";

?>

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