gnupg_encrypt

(PECL gnupg >= 0.1)

gnupg_encrypt — Encrypts a given text

说明

string gnupg_encrypt ( resource $identifier , string $plaintext )

Encrypts the given plaintext with the keys, which were set with gnupg_addencryptkey before and returns the encrypted text.

参数

identifier: gnupg 标识符，由对 gnupg_init() 或 gnupg 的调用生成。
plaintext: The text being encrypted.

返回值

On success, this function returns the encrypted text. On failure, this function returns FALSE .

范例

Example #1 Procedural gnupg_encrypt() example

  <?php
$res  =  gnupg_init ();
 gnupg_addencryptkey ( $res , "8660281B6051D071D94B5B230549F9DC851566DC" );
 $enc  =  gnupg_encrypt ( $res ,  "just a test" );
echo  $enc ;
 ?>

Example #2 OO gnupg_encrypt() example

  <?php
$gpg  = new  gnupg ();
 $gpg  ->  addencryptkey ( "8660281B6051D071D94B5B230549F9DC851566DC" );
 $enc  =  $gpg  ->  encrypt ( "just a test" );
echo  $enc ;
 ?>

用户评论:

[#1] Mahbub Kabir [2014-04-08 11:38:41]

// to generate a key type in gpg --gen-key in the command line
// to export public key gpg --export -a "User Name" > public.key

<?php
putenv("GNUPGHOME=/tmp");

// it assumes public key exists in the /tmp/keys folder
$publicKey = file_get_contents(getenv('GNUPGHOME') . '/keys/public.key');

    $gpg = new gnupg();
    $gpg->seterrormode(gnupg::ERROR_EXCEPTION);
    $info = $gpg->import($publicKey);
    $gpg->addencryptkey($info['fingerprint']);

    $uploadFileContent = file_get_contents('/tmp/file-to-encrypt');
    $enc = $gpg->encrypt($uploadFileContent);
    echo $enc

Hope this helps

[#2] nick johnson [2008-04-17 11:44:19]

After spending some time trying to get this extension to work, I've found that you have to have the GNUPGHOME environment variable set so that the keychain can be found, and have it set equal to the .gnupg directory itself, not the apache/httpd user's home directory (which is what is shown in dan's example code). below is an example of this and a simple function I was working on at the time to encrypt a piece of data for storage in a database.

<?php // set the environment so gnupg can find the keyring putenv("GNUPGHOME=/home/apache/.gnupg"); function encrypt_string($str,$fingerprint) { $res = gnupg_init(); gnupg_addencryptkey($res,$fingerprint); $enc = gnupg_encrypt($res, $str); return $enc; } ?>

[#3] dan at f-box dot org [2008-02-19 07:20:14]

This is a simple example of a Procedural use of import addencryptkey and encrypt. Obviously in a real world use you would only be importing the key once.

<?php putenv("GNUPGHOME=/tmp"); $pubkey = "-----BEGIN PGP PUBLIC KEY BLOCK----- Version: GnuPG v1.2.6 (GNU/Linux) mQGiBEe68W8RBACVuFuv4d+roDSCdRO1SuO8dQwds4VTjVOqgVKQtq6+8Fe95RY8 BAf1IyLj4bxvWPhr0wZdVwTosD/sFoPtdCyhVcF932nP0GLHsTEeVwSz9mid22HI O4Kmwj2kE+I+C9QdzAg0zaWQnVaF9UC7pIdMR6tEnADI8nkVDdZ+zb2ziwCg6Yqu tk3KAzKRT1SNUzTE/n9y2PED/1tIWiXfGBGzseX0W/e1G+MjuolWOXv4BXeiFGmn 8wnHsQ4Z4Tzk+ag0k+6pZZXjcL6Le486wpZ9MAe6LM31XDpQDVtyCL8t63nvQpB8 TUimbseBZMb3TytCubNLGFe5FnNLGDciElcD09d2xC6Xv6zE2jj4GtBW1bXqYWtl jm0PA/4u6av6o6pIgLRfAawspr8kaeZ8+FU4NbIiS6xZmBUEQ/o7q95VKGgFVKBi ugDOlnbgSzBIwSlsRVT2ivu/XVWnhQaRCotSm3AzOc2XecqrJ6F1gqk0n+yP/1h1 yeTvvfS5zgqNTG2UmovjVsKFzaDqmsYZ+sYfwc209z9PY+6FuLQnQXBhY2hlVGVz dCAoVGVzdGluZykgPGFwYWNoZUBsb2NhbGhvc3Q+iF4EExECAB4FAke68W8CGwMG CwkIBwMCAxUCAwMWAgECHgECF4AACgkQJE9COu2PFIEGDwCglArzAza13xjbdR04 DQ1U9FWQhMYAnRrWQeGTRm+BYm6SghNpDOKcmMqruQENBEe68XAQBADPIO+JFe5t BQmI4l60bNMNSUqsL0TtIP8G6Bpd8q2xBOemHCLfGT9Y5DN6k0nneBQxajSfWBQ5 ZdKFwV5ezICz9fnGisEf9LPSwctfUIcvumbcPPsrUOUZX7BuCHrcfy1nebS3myO/ ScTKpW8Wz8AjpKTBG55DMkXSvnx+hS+PEwADBQP/dNnVlKYdNKA70B4QTEzfvF+E 5lyiauyT41SQoheTMhrs/3RIqUy7WWn3B20aTutHWWYXdYV+E85/CarhUmLNZGA2 tml1Mgl6F2myQ/+MiKi/aj9NVhcuz38OK/IAze7kNJJqK+UEWblB2Wfa31/9nNzv ewVHa1xHtUyVDaewAACISQQYEQIACQUCR7rxcAIbDAAKCRAkT0I67Y8UgRwEAKDT L6DwyEZGLTpAqy2OLUH7SFKm2ACgr3tnPuPFlBtHx0OqY4gGiNMJHXE= =jHPH -----END PGP PUBLIC KEY BLOCK-----"; $enc = (null); $res = gnupg_init(); echo "gnupg_init RTV = <br/><pre>\n"; var_dump($res); echo "</pre>\n"; $rtv = gnupg_import($res, $pubkey); echo "gnupg_import RTV = <br/><pre>\n"; var_dump($rtv); echo "</pre>\n"; $rtv = gnupg_addencryptkey($res, "C25F29936D9046D73A77DCF8244F423AED8F1481"); echo "gnupg_addencryptkey RTV = <br /><pre>\n"; var_dump($rtv); echo "</pre>\n"; $enc = gnupg_encrypt($res, "just a test to see if anything works"); echo "Encrypted Data: " . $enc . "<br/>"; ?>

[#4] paul at cressbrook dot co dot uk [2007-02-14 04:52:34]

Hi

I found that the apache or httpd user (or whichever user the webserver is using to run) needed to have write access to the .gnupg directory for the gnupg_php functions to work. This could be your problem. It seems a rather unsatisfactory feature of this module - gnupg keeps giving warnings that it is unsafe.

[#5] jkushner at livemercial dot com [2007-01-03 11:49:16]

Very nice function, yet I cant seem to get it to work correctly.
Here is what I have..

$_STR_recipientKeyId='78F21BCA81042C23';

// This is a wrapper class I made that engulfs the gnupg class
if(!class_exists('core_Gnupg')){
require(CORE_PATH_CLASS.'Gnupg.class.php');
}

//$_OBJ_gpg is just an instantiation of that class.
//returnInfo takes in the userID name, and uses the keyinfo() //function to return an array of data for that user.
$_ARR_keyinfo=$_OBJ_gpg->returnInfo($_STR_recipientUserId);

//now I have the fully functional userid
//ex: Jonathan Kushner <jkushner@livemercial.com>
$_STR_recipientUserId=$_ARR_keyinfo[0]['uids'][0]['uid'];

###########################

See, originally I was using the fingerprint from the $_ARR_keyinfo above and passing that into the encrypt function, but it still associated the encrypted data with my personal private key that I have associated with apache.

Any ideas?