(PHP 4 >= 4.2.0, PHP 5, PHP 7)

openssl_pkey_get_privateLiefere einen privaten Schlüssel


openssl_pkey_get_private ( mixed $key [, string $passphrase = "" ] ) : resource

openssl_get_privatekey() parst key und bereitet ihn zur Nutzung durch andere Funktionen vor.



Als key kann angegeben werden:

  1. Eine Zeichenkette im Format file://path/to/file.pem. Die angegebene Datei muss ein PEM kodiertes Zertifikat und/oder einen privaten Schlüssel enthalten.
  2. Ein privater Schlüssel im PEM-Format.


Der optionale Parameter passphrase muß angegeben werden, falls der Schlüssel selbst verschlüsselt ist (durch eine Passphrase geschützt).


Gibt bei Erfolg eine Schlüssel-Resource zurück, FALSE wenn ein Fehler auftritt.

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User Contributed Notes 3 notes

kristof1 at mailbox dot hu
5 years ago
It's actually "file://key.pem" when you want to give a relative path using unix systems. It will be three '/' in case of absolute path (e.g "file:///home/username/..."). But this path consists of two '/' originated from "file://" and one '/' from the fact that home is a subfolder of the unix filesystem's root directory ("/home/username/..."). This two part will be concatenated and you will get three '/' characters following each other.

So you only have to concatenate "file://" with an existing path string in every case.
8 years ago
Please note that "file://path/to/file.pem" in documentation means file protocol + file path. In UNIX like OS, that is something like file:///rsa_private_key.pem. There is THREE slashes in the path string, not TWO.
geoff at hostfission dot com
3 years ago
Since this function can be used to load a PEM encoded string also, those that are using it relying on user input should be sure to check that the passed data is indeed a PEM encoded string and not a malicious file path.

The following should be sufficient.

= trim($_POST['private']);
  if (
strpos($private, '-----') !== 0) return false;
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