Source of file PublicKey.php
Size: 4,151 Bytes - Last Modified: 2014-03-12T23:21:18+01:00
/home/theseer/Downloads/ZendFramework-2.3.0/library/Zend/Crypt/PublicKey/Rsa/PublicKey.php
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148 | <?php /** * Zend Framework (http://framework.zend.com/) * * @link http://github.com/zendframework/zf2 for the canonical source repository * @copyright Copyright (c) 2005-2014 Zend Technologies USA Inc. (http://www.zend.com) * @license http://framework.zend.com/license/new-bsd New BSD License */ namespace Zend\Crypt\PublicKey\Rsa; /** * RSA public key */ class PublicKey extends AbstractKey { const CERT_START = '-----BEGIN CERTIFICATE-----'; /** * @var string */ protected $certificateString = null; /** * Create public key instance public key from PEM formatted key file * or X.509 certificate file * * @param string $pemOrCertificateFile * @return PublicKey * @throws Exception\InvalidArgumentException */ public static function fromFile($pemOrCertificateFile) { if (!is_readable($pemOrCertificateFile)) { throw new Exception\InvalidArgumentException( "File '{$pemOrCertificateFile}' is not readable" ); } return new static(file_get_contents($pemOrCertificateFile)); } /** * Construct public key with PEM formatted string or X.509 certificate * * @param string $pemStringOrCertificate * @throws Exception\RuntimeException */ public function __construct($pemStringOrCertificate) { $result = openssl_pkey_get_public($pemStringOrCertificate); if (false === $result) { throw new Exception\RuntimeException( 'Unable to load public key; openssl ' . openssl_error_string() ); } if (strpos($pemStringOrCertificate, self::CERT_START) !== false) { $this->certificateString = $pemStringOrCertificate; } else { $this->pemString = $pemStringOrCertificate; } $this->opensslKeyResource = $result; $this->details = openssl_pkey_get_details($this->opensslKeyResource); } /** * Encrypt using this key * * @param string $data * @throws Exception\InvalidArgumentException * @throws Exception\RuntimeException * @return string */ public function encrypt($data) { if (empty($data)) { throw new Exception\InvalidArgumentException('The data to encrypt cannot be empty'); } $encrypted = ''; $result = openssl_public_encrypt($data, $encrypted, $this->getOpensslKeyResource()); if (false === $result) { throw new Exception\RuntimeException( 'Can not encrypt; openssl ' . openssl_error_string() ); } return $encrypted; } /** * Decrypt using this key * * @param string $data * @throws Exception\InvalidArgumentException * @throws Exception\RuntimeException * @return string */ public function decrypt($data) { if (!is_string($data)) { throw new Exception\InvalidArgumentException('The data to decrypt must be a string'); } if ('' === $data) { throw new Exception\InvalidArgumentException('The data to decrypt cannot be empty'); } $decrypted = ''; $result = openssl_public_decrypt($data, $decrypted, $this->getOpensslKeyResource()); if (false === $result) { throw new Exception\RuntimeException( 'Can not decrypt; openssl ' . openssl_error_string() ); } return $decrypted; } /** * Get certificate string * * @return string */ public function getCertificate() { return $this->certificateString; } /** * To string * * @return string * @throws Exception\RuntimeException */ public function toString() { if (!empty($this->certificateString)) { return $this->certificateString; } elseif (!empty($this->pemString)) { return $this->pemString; } throw new Exception\RuntimeException('No public key string representation is available'); } } |