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Replace library/asn1.php with phpseclib

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Philipp 2020-09-12 11:57:37 +02:00
parent 0af08ac1d4
commit 11ef3895f5
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GPG key ID: 9A28B7D4FF5667BD
9 changed files with 197 additions and 455 deletions
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175
src/Util/Crypto.php
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@ -21,12 +21,12 @@
namespace Friendica\Util;
use ASN_BASE;
use ASNValue;
use Friendica\Core\Hook;
use Friendica\Core\Logger;
use Friendica\Core\System;
use Friendica\DI;
use phpseclib\Crypt\RSA;
/**
* Crypto class
@ -86,27 +86,6 @@ class Crypto
return $result;
}
/**
* @param string $Der der formatted string
* @return string
*/
private static function DerToRsa($Der)
{
//Encode:
$Der = base64_encode($Der);
//Split lines:
$lines = str_split($Der, 64);
$body = implode("\n", $lines);
//Get title:
$title = 'RSA PUBLIC KEY';
//Add wrapping:
$result = "-----BEGIN {$title}-----\n";
$result .= $body . "\n";
$result .= "-----END {$title}-----\n";
return $result;
}
/**
* @param string $Modulus modulo
* @param string $PublicExponent exponent
@ -136,26 +115,6 @@ class Crypto
return $PublicDER;
}
/**
* @param string $Modulus modulo
* @param string $PublicExponent exponent
* @return string
*/
private static function pkcs1Encode($Modulus, $PublicExponent)
{
//Encode key sequence
$modulus = new ASNValue(ASNValue::TAG_INTEGER);
$modulus->SetIntBuffer($Modulus);
$publicExponent = new ASNValue(ASNValue::TAG_INTEGER);
$publicExponent->SetIntBuffer($PublicExponent);
$keySequenceItems = [$modulus, $publicExponent];
$keySequence = new ASNValue(ASNValue::TAG_SEQUENCE);
$keySequence->SetSequence($keySequenceItems);
//Encode bit string
$bitStringValue = $keySequence->Encode();
return $bitStringValue;
}
/**
* @param string $m modulo
* @param string $e exponent
@ -169,79 +128,37 @@ class Crypto
}
/**
* @param string $key key
* @param string $m modulo reference
* @param object $e exponent reference
* Transform RSA public keys to standard PEM output
*
* @param string $key A RSA public key
*
* @return string The PEM output of this key
*/
public static function rsaToPem(string $key)
{
$publicKey = new RSA();
$publicKey->setPublicKey($key);
return $publicKey->getPublicKey(RSA::PUBLIC_FORMAT_PKCS8);
}
/**
* Extracts the modulo and exponent reference from a public PEM key
*
* @param string $key public PEM key
* @param string $modulus (ref) modulo reference
* @param string $exponent (ref) exponent reference
*
* @return void
* @throws \Exception
*/
private static function pubRsaToMe($key, &$m, &$e)
public static function pemToMe(string $key, string &$modulus, string &$exponent)
{
$lines = explode("\n", $key);
unset($lines[0]);
unset($lines[count($lines)]);
$x = base64_decode(implode('', $lines));
$publicKey = new RSA();
$publicKey->loadKey($key);
$publicKey->setPublicKey();
$r = ASN_BASE::parseASNString($x);
$m = Strings::base64UrlDecode($r[0]->asnData[0]->asnData);
$e = Strings::base64UrlDecode($r[0]->asnData[1]->asnData);
}
/**
* @param string $key key
* @return string
* @throws \Exception
*/
public static function rsaToPem($key)
{
self::pubRsaToMe($key, $m, $e);
return self::meToPem($m, $e);
}
/**
* @param string $key key
* @return string
* @throws \Exception
*/
private static function pemToRsa($key)
{
self::pemToMe($key, $m, $e);
return self::meToRsa($m, $e);
}
/**
* @param string $key key
* @param string $m modulo reference
* @param string $e exponent reference
* @return void
* @throws \Exception
*/
public static function pemToMe($key, &$m, &$e)
{
$lines = explode("\n", $key);
unset($lines[0]);
unset($lines[count($lines)]);
$x = base64_decode(implode('', $lines));
$r = ASN_BASE::parseASNString($x);
if (isset($r[0])) {
$m = Strings::base64UrlDecode($r[0]->asnData[1]->asnData[0]->asnData[0]->asnData);
$e = Strings::base64UrlDecode($r[0]->asnData[1]->asnData[0]->asnData[1]->asnData);
}
}
/**
* @param string $m modulo
* @param string $e exponent
* @return string
*/
private static function meToRsa($m, $e)
{
$der = self::pkcs1Encode($m, $e);
$key = self::DerToRsa($der);
return $key;
$modulus = $publicKey->modulus->toBytes();
$exponent = $publicKey->exponent->toBytes();
}
/**
@ -312,42 +229,6 @@ class Crypto
return openssl_decrypt($data, 'aes-256-cbc', str_pad($key, 32, "\0"), OPENSSL_RAW_DATA, str_pad($iv, 16, "\0"));
}
/**
* Encrypt a string with 'aes-256-ctr' cipher method.
*
* Ported from Hubzilla: https://framagit.org/hubzilla/core/blob/master/include/crypto.php
*
* @param string $data
* @param string $key The key used for encryption.
* @param string $iv A non-NULL Initialization Vector.
*
* @return string|boolean Encrypted string or false on failure.
*/
private static function encryptAES256CTR($data, $key, $iv)
{
$key = substr($key, 0, 32);
$iv = substr($iv, 0, 16);
return openssl_encrypt($data, 'aes-256-ctr', str_pad($key, 32, "\0"), OPENSSL_RAW_DATA, str_pad($iv, 16, "\0"));
}
/**
* Decrypt a string with 'aes-256-ctr' cipher method.
*
* Ported from Hubzilla: https://framagit.org/hubzilla/core/blob/master/include/crypto.php
*
* @param string $data
* @param string $key The key used for decryption.
* @param string $iv A non-NULL Initialization Vector.
*
* @return string|boolean Decrypted string or false on failure.
*/
private static function decryptAES256CTR($data, $key, $iv)
{
$key = substr($key, 0, 32);
$iv = substr($iv, 0, 16);
return openssl_decrypt($data, 'aes-256-ctr', str_pad($key, 32, "\0"), OPENSSL_RAW_DATA, str_pad($iv, 16, "\0"));
}
/**
*
* Ported from Hubzilla: https://framagit.org/hubzilla/core/blob/master/include/crypto.php