PrivateKey.php

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<?php
 
namespace SAML2\Certificate;
 
use SAML2\Exception\InvalidArgumentException;
 
class PrivateKey extends Key
{
    public static function create($keyContents, $passphrase = null)
    {
        if (!is_string($keyContents)) {
            throw InvalidArgumentException::invalidType('string', $keyContents);
        }
 
        if ($passphrase && !is_string($passphrase)) {
            throw InvalidArgumentException::invalidType('string', $passphrase);
        }
 
        $keyData = array('PEM' => $keyContents, self::USAGE_ENCRYPTION => true);
        if ($passphrase) {
            $keyData['passphrase'] = $passphrase;
        }
 
        return new self($keyData);
    }
 
    public function getKeyAsString()
    {
        return $this->keyData['PEM'];
    }
 
    public function getPassphrase()
    {
        return isset($this->keyData['passphrase']) ? $this->keyData['passphrase'] : null;
    }
}