diff options
Diffstat (limited to 'vendor/phpseclib/phpseclib/phpseclib/Crypt/RSA/Formats/Keys/XML.php')
| -rw-r--r-- | vendor/phpseclib/phpseclib/phpseclib/Crypt/RSA/Formats/Keys/XML.php | 171 |
1 files changed, 171 insertions, 0 deletions
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Crypt/RSA/Formats/Keys/XML.php b/vendor/phpseclib/phpseclib/phpseclib/Crypt/RSA/Formats/Keys/XML.php new file mode 100644 index 0000000..280048c --- /dev/null +++ b/vendor/phpseclib/phpseclib/phpseclib/Crypt/RSA/Formats/Keys/XML.php @@ -0,0 +1,171 @@ +<?php + +/** + * XML Formatted RSA Key Handler + * + * More info: + * + * http://www.w3.org/TR/xmldsig-core/#sec-RSAKeyValue + * http://www.w3.org/TR/xkms2/#XKMS_2_0_Paragraph_269 + * http://en.wikipedia.org/wiki/XML_Signature + * http://en.wikipedia.org/wiki/XKMS + * + * PHP version 5 + * + * @author Jim Wigginton <[email protected]> + * @copyright 2015 Jim Wigginton + * @license http://www.opensource.org/licenses/mit-license.html MIT License + * @link http://phpseclib.sourceforge.net + */ + +namespace phpseclib3\Crypt\RSA\Formats\Keys; + +use phpseclib3\Common\Functions\Strings; +use phpseclib3\Exception\BadConfigurationException; +use phpseclib3\Exception\UnsupportedFormatException; +use phpseclib3\Math\BigInteger; + +/** + * XML Formatted RSA Key Handler + * + * @author Jim Wigginton <[email protected]> + */ +abstract class XML +{ + /** + * Break a public or private key down into its constituent components + * + * @param string $key + * @param string $password optional + * @return array + */ + public static function load($key, $password = '') + { + if (!Strings::is_stringable($key)) { + throw new \UnexpectedValueException('Key should be a string - not a ' . gettype($key)); + } + + if (!class_exists('DOMDocument')) { + throw new BadConfigurationException('The dom extension is not setup correctly on this system'); + } + + $components = [ + 'isPublicKey' => false, + 'primes' => [], + 'exponents' => [], + 'coefficients' => [] + ]; + + $use_errors = libxml_use_internal_errors(true); + + $dom = new \DOMDocument(); + if (substr($key, 0, 5) != '<?xml') { + $key = '<xml>' . $key . '</xml>'; + } + if (!$dom->loadXML($key)) { + libxml_use_internal_errors($use_errors); + throw new \UnexpectedValueException('Key does not appear to contain XML'); + } + $xpath = new \DOMXPath($dom); + $keys = ['modulus', 'exponent', 'p', 'q', 'dp', 'dq', 'inverseq', 'd']; + foreach ($keys as $key) { + // $dom->getElementsByTagName($key) is case-sensitive + $temp = $xpath->query("//*[translate(local-name(), 'ABCDEFGHIJKLMNOPQRSTUVWXYZ','abcdefghijklmnopqrstuvwxyz')='$key']"); + if (!$temp->length) { + continue; + } + $value = new BigInteger(Strings::base64_decode($temp->item(0)->nodeValue), 256); + switch ($key) { + case 'modulus': + $components['modulus'] = $value; + break; + case 'exponent': + $components['publicExponent'] = $value; + break; + case 'p': + $components['primes'][1] = $value; + break; + case 'q': + $components['primes'][2] = $value; + break; + case 'dp': + $components['exponents'][1] = $value; + break; + case 'dq': + $components['exponents'][2] = $value; + break; + case 'inverseq': + $components['coefficients'][2] = $value; + break; + case 'd': + $components['privateExponent'] = $value; + } + } + + libxml_use_internal_errors($use_errors); + + foreach ($components as $key => $value) { + if (is_array($value) && !count($value)) { + unset($components[$key]); + } + } + + if (isset($components['modulus']) && isset($components['publicExponent'])) { + if (count($components) == 3) { + $components['isPublicKey'] = true; + } + return $components; + } + + throw new \UnexpectedValueException('Modulus / exponent not present'); + } + + /** + * Convert a private key to the appropriate format. + * + * @param \phpseclib3\Math\BigInteger $n + * @param \phpseclib3\Math\BigInteger $e + * @param \phpseclib3\Math\BigInteger $d + * @param array $primes + * @param array $exponents + * @param array $coefficients + * @param string $password optional + * @return string + */ + public static function savePrivateKey(BigInteger $n, BigInteger $e, BigInteger $d, array $primes, array $exponents, array $coefficients, $password = '') + { + if (count($primes) != 2) { + throw new \InvalidArgumentException('XML does not support multi-prime RSA keys'); + } + + if (!empty($password) && is_string($password)) { + throw new UnsupportedFormatException('XML private keys do not support encryption'); + } + + return "<RSAKeyPair>\r\n" . + ' <Modulus>' . Strings::base64_encode($n->toBytes()) . "</Modulus>\r\n" . + ' <Exponent>' . Strings::base64_encode($e->toBytes()) . "</Exponent>\r\n" . + ' <P>' . Strings::base64_encode($primes[1]->toBytes()) . "</P>\r\n" . + ' <Q>' . Strings::base64_encode($primes[2]->toBytes()) . "</Q>\r\n" . + ' <DP>' . Strings::base64_encode($exponents[1]->toBytes()) . "</DP>\r\n" . + ' <DQ>' . Strings::base64_encode($exponents[2]->toBytes()) . "</DQ>\r\n" . + ' <InverseQ>' . Strings::base64_encode($coefficients[2]->toBytes()) . "</InverseQ>\r\n" . + ' <D>' . Strings::base64_encode($d->toBytes()) . "</D>\r\n" . + '</RSAKeyPair>'; + } + + /** + * Convert a public key to the appropriate format + * + * @param \phpseclib3\Math\BigInteger $n + * @param \phpseclib3\Math\BigInteger $e + * @return string + */ + public static function savePublicKey(BigInteger $n, BigInteger $e) + { + return "<RSAKeyValue>\r\n" . + ' <Modulus>' . Strings::base64_encode($n->toBytes()) . "</Modulus>\r\n" . + ' <Exponent>' . Strings::base64_encode($e->toBytes()) . "</Exponent>\r\n" . + '</RSAKeyValue>'; + } +} |