123 lines
3.3 KiB
PHP
123 lines
3.3 KiB
PHP
<?php
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/**
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* PKCS#8 Formatted RSA Key Handler
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*
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* PHP version 5
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*
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* Used by PHP's openssl_public_encrypt() and openssl's rsautl (when -pubin is set)
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*
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* Processes keys with the following headers:
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*
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* -----BEGIN ENCRYPTED PRIVATE KEY-----
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* -----BEGIN PRIVATE KEY-----
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* -----BEGIN PUBLIC KEY-----
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*
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* Analogous to ssh-keygen's pkcs8 format (as specified by -m). Although PKCS8
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* is specific to private keys it's basically creating a DER-encoded wrapper
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* for keys. This just extends that same concept to public keys (much like ssh-keygen)
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*
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* @author Jim Wigginton <terrafrost@php.net>
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* @copyright 2015 Jim Wigginton
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* @license http://www.opensource.org/licenses/mit-license.html MIT License
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* @link http://phpseclib.sourceforge.net
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*/
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namespace phpseclib3\Crypt\RSA\Formats\Keys;
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use phpseclib3\Crypt\Common\Formats\Keys\PKCS8 as Progenitor;
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use phpseclib3\File\ASN1;
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use phpseclib3\Math\BigInteger;
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/**
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* PKCS#8 Formatted RSA Key Handler
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*
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* @author Jim Wigginton <terrafrost@php.net>
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*/
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abstract class PKCS8 extends Progenitor
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{
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/**
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* OID Name
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*
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* @var string
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*/
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const OID_NAME = 'rsaEncryption';
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/**
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* OID Value
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*
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* @var string
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*/
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const OID_VALUE = '1.2.840.113549.1.1.1';
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/**
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* Child OIDs loaded
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*
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* @var bool
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*/
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protected static $childOIDsLoaded = false;
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/**
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* Break a public or private key down into its constituent components
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*
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* @param string $key
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* @param string $password optional
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* @return array
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*/
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public static function load($key, $password = '')
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{
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$key = parent::load($key, $password);
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if (isset($key['privateKey'])) {
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$components['isPublicKey'] = false;
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$type = 'private';
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} else {
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$components['isPublicKey'] = true;
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$type = 'public';
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}
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$result = $components + PKCS1::load($key[$type . 'Key']);
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if (isset($key['meta'])) {
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$result['meta'] = $key['meta'];
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}
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return $result;
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}
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/**
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* Convert a private key to the appropriate format.
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*
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* @param \phpseclib3\Math\BigInteger $n
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* @param \phpseclib3\Math\BigInteger $e
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* @param \phpseclib3\Math\BigInteger $d
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* @param array $primes
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* @param array $exponents
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* @param array $coefficients
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* @param string $password optional
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* @param array $options optional
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* @return string
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*/
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public static function savePrivateKey(BigInteger $n, BigInteger $e, BigInteger $d, array $primes, array $exponents, array $coefficients, $password = '', array $options = [])
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{
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$key = PKCS1::savePrivateKey($n, $e, $d, $primes, $exponents, $coefficients);
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$key = ASN1::extractBER($key);
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return self::wrapPrivateKey($key, [], null, $password, null, '', $options);
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}
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/**
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* Convert a public key to the appropriate format
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*
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* @param \phpseclib3\Math\BigInteger $n
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* @param \phpseclib3\Math\BigInteger $e
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* @param array $options optional
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* @return string
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*/
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public static function savePublicKey(BigInteger $n, BigInteger $e, array $options = [])
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{
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$key = PKCS1::savePublicKey($n, $e);
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$key = ASN1::extractBER($key);
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return self::wrapPublicKey($key, null);
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}
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}
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