PHP 7.0.6 Released

    openssl_private_decrypt

    (PHP 4 >= 4.0.6, PHP 5, PHP 7)

    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.

    See Also

    User Contributed Notes

    wfredkNOSPAM at L5DevelopmentNOSPAM dot com
    14 years ago
    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";
    ?>
    tjusongchao at gmail dot com
    1 year ago
    of course you have to add the openssl extension to you php environment.
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