openssl_private_decrypt

(PHP 4 >= 4.0.6, PHP 5)

openssl_private_decrypt — Decrypts data with private key

Description

bool openssl_private_decrypt ( string $data , string &$decrypted , mixed $key [, int $padding = OPENSSL_PKCS1_PADDING ] )

openssl_private_decrypt() decrypts data that was previous encrypted via openssl_public_encrypt() and stores the result into decrypted.

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

Parameters

data
decrypted
key: key must be the private key corresponding that was used to encrypt the data.
padding: padding can be one of OPENSSL_PKCS1_PADDING, OPENSSL_SSLV23_PADDING, OPENSSL_PKCS1_OAEP_PADDING, OPENSSL_NO_PADDING.

Return Values

Returns TRUE on success or FALSE on failure.

Коментарии

Mar 08

Автор: wfredkNOSPAM at L5DevelopmentNOSPAM dot com


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";

?>