*/
namespace Friendica\Util;
+use Friendica\Core\Addon;
use Friendica\Core\Config;
+use Friendica\Core\Logger;
+use Friendica\Util\Strings;
use ASN_BASE;
use ASNValue;
-require_once 'library/ASNValue.class.php';
-require_once 'library/asn1.php';
-
/**
* @brief Crypto class
*/
$modulus->SetIntBuffer($Modulus);
$publicExponent = new ASNValue(ASNValue::TAG_INTEGER);
$publicExponent->SetIntBuffer($PublicExponent);
- $keySequenceItems = array($modulus, $publicExponent);
+ $keySequenceItems = [$modulus, $publicExponent];
$keySequence = new ASNValue(ASNValue::TAG_SEQUENCE);
$keySequence->SetSequence($keySequenceItems);
//Encode bit string
$modulus->SetIntBuffer($Modulus);
$publicExponent = new ASNValue(ASNValue::TAG_INTEGER);
$publicExponent->SetIntBuffer($PublicExponent);
- $keySequenceItems = array($modulus, $publicExponent);
+ $keySequenceItems = [$modulus, $publicExponent];
$keySequence = new ASNValue(ASNValue::TAG_SEQUENCE);
$keySequence->SetSequence($keySequenceItems);
//Encode bit string
$r = ASN_BASE::parseASNString($x);
- $m = base64url_decode($r[0]->asnData[0]->asnData);
- $e = base64url_decode($r[0]->asnData[1]->asnData);
+ $m = Strings::base64UrlDecode($r[0]->asnData[0]->asnData);
+ $e = Strings::base64UrlDecode($r[0]->asnData[1]->asnData);
}
/**
* @param string $e exponent reference
* @return void
*/
- private static function pemToMe($key, &$m, &$e)
+ public static function pemToMe($key, &$m, &$e)
{
$lines = explode("\n", $key);
unset($lines[0]);
$r = ASN_BASE::parseASNString($x);
- $m = base64url_decode($r[0]->asnData[1]->asnData[0]->asnData[0]->asnData);
- $e = base64url_decode($r[0]->asnData[1]->asnData[0]->asnData[1]->asnData);
+ $m = Strings::base64UrlDecode($r[0]->asnData[1]->asnData[0]->asnData[0]->asnData);
+ $e = Strings::base64UrlDecode($r[0]->asnData[1]->asnData[0]->asnData[1]->asnData);
}
/**
*/
public static function newKeypair($bits)
{
- $openssl_options = array(
+ $openssl_options = [
'digest_alg' => 'sha1',
'private_key_bits' => $bits,
'encrypt_key' => false
- );
+ ];
$conf = Config::get('system', 'openssl_conf_file');
if ($conf) {
$result = openssl_pkey_new($openssl_options);
if (empty($result)) {
- logger('new_keypair: failed');
+ Logger::log('new_keypair: failed');
return false;
}
// Get private key
- $response = array('prvkey' => '', 'pubkey' => '');
+ $response = ['prvkey' => '', 'pubkey' => ''];
openssl_pkey_export($result, $response['prvkey']);
return $response;
}
+
+ /**
+ * Encrypt a string with 'aes-256-cbc' 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 $iv A non-NULL Initialization Vector.
+ *
+ * @return string|boolean Encrypted string or false on failure.
+ */
+ private static function encryptAES256CBC($data, $key, $iv)
+ {
+ return openssl_encrypt($data, 'aes-256-cbc', str_pad($key, 32, "\0"), OPENSSL_RAW_DATA, str_pad($iv, 16, "\0"));
+ }
+
+ /**
+ * Decrypt a string with 'aes-256-cbc' 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 $iv A non-NULL Initialization Vector.
+ *
+ * @return string|boolean Decrypted string or false on failure.
+ */
+ private static function decryptAES256CBC($data, $key, $iv)
+ {
+ return openssl_decrypt($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
+ *
+ * @param string $data
+ * @param string $pubkey The public key.
+ * @param string $alg The algorithm used for encryption.
+ *
+ * @return array
+ */
+ public static function encapsulate($data, $pubkey, $alg = 'aes256cbc')
+ {
+ if ($alg === 'aes256cbc') {
+ return self::encapsulateAes($data, $pubkey);
+ }
+ return self::encapsulateOther($data, $pubkey, $alg);
+ }
+
+ /**
+ *
+ * Ported from Hubzilla: https://framagit.org/hubzilla/core/blob/master/include/crypto.php
+ *
+ * @param type $data
+ * @param type $pubkey The public key.
+ * @param type $alg The algorithm used for encryption.
+ *
+ * @return array
+ */
+ private static function encapsulateOther($data, $pubkey, $alg)
+ {
+ if (!$pubkey) {
+ Logger::log('no key. data: '.$data);
+ }
+ $fn = 'encrypt' . strtoupper($alg);
+ if (method_exists(__CLASS__, $fn)) {
+ $result = ['encrypted' => true];
+ $key = random_bytes(256);
+ $iv = random_bytes(256);
+ $result['data'] = Strings::base64UrlEncode(self::$fn($data, $key, $iv), true);
+
+ // log the offending call so we can track it down
+ if (!openssl_public_encrypt($key, $k, $pubkey)) {
+ $x = debug_backtrace();
+ Logger::log('RSA failed. ' . print_r($x[0], true));
+ }
+
+ $result['alg'] = $alg;
+ $result['key'] = Strings::base64UrlEncode($k, true);
+ openssl_public_encrypt($iv, $i, $pubkey);
+ $result['iv'] = Strings::base64UrlEncode($i, true);
+
+ return $result;
+ } else {
+ $x = ['data' => $data, 'pubkey' => $pubkey, 'alg' => $alg, 'result' => $data];
+ Addon::callHooks('other_encapsulate', $x);
+
+ return $x['result'];
+ }
+ }
+
+ /**
+ *
+ * Ported from Hubzilla: https://framagit.org/hubzilla/core/blob/master/include/crypto.php
+ *
+ * @param string $data
+ * @param string $pubkey
+ *
+ * @return array
+ */
+ private static function encapsulateAes($data, $pubkey)
+ {
+ if (!$pubkey) {
+ Logger::log('aes_encapsulate: no key. data: ' . $data);
+ }
+
+ $key = random_bytes(32);
+ $iv = random_bytes(16);
+ $result = ['encrypted' => true];
+ $result['data'] = Strings::base64UrlEncode(self::encryptAES256CBC($data, $key, $iv), true);
+
+ // log the offending call so we can track it down
+ if (!openssl_public_encrypt($key, $k, $pubkey)) {
+ $x = debug_backtrace();
+ Logger::log('aes_encapsulate: RSA failed. ' . print_r($x[0], true));
+ }
+
+ $result['alg'] = 'aes256cbc';
+ $result['key'] = Strings::base64UrlEncode($k, true);
+ openssl_public_encrypt($iv, $i, $pubkey);
+ $result['iv'] = Strings::base64UrlEncode($i, true);
+
+ return $result;
+ }
+
+ /**
+ *
+ * Ported from Hubzilla: https://framagit.org/hubzilla/core/blob/master/include/crypto.php
+ *
+ * @param string $data
+ * @param string $prvkey The private key used for decryption.
+ *
+ * @return string|boolean The decrypted string or false on failure.
+ */
+ public static function unencapsulate($data, $prvkey)
+ {
+ if (!$data) {
+ return;
+ }
+
+ $alg = ((array_key_exists('alg', $data)) ? $data['alg'] : 'aes256cbc');
+ if ($alg === 'aes256cbc') {
+ return self::encapsulateAes($data, $prvkey);
+ }
+ return self::encapsulateOther($data, $prvkey, $alg);
+ }
+
+ /**
+ *
+ * Ported from Hubzilla: https://framagit.org/hubzilla/core/blob/master/include/crypto.php
+ *
+ * @param string $data
+ * @param string $prvkey The private key used for decryption.
+ * @param string $alg
+ *
+ * @return string|boolean The decrypted string or false on failure.
+ */
+ private static function unencapsulateOther($data, $prvkey, $alg)
+ {
+ $fn = 'decrypt' . strtoupper($alg);
+
+ if (method_exists(__CLASS__, $fn)) {
+ openssl_private_decrypt(Strings::base64UrlDecode($data['key']), $k, $prvkey);
+ openssl_private_decrypt(Strings::base64UrlDecode($data['iv']), $i, $prvkey);
+
+ return self::$fn(Strings::base64UrlDecode($data['data']), $k, $i);
+ } else {
+ $x = ['data' => $data, 'prvkey' => $prvkey, 'alg' => $alg, 'result' => $data];
+ Addon::callHooks('other_unencapsulate', $x);
+
+ return $x['result'];
+ }
+ }
+
+ /**
+ *
+ * Ported from Hubzilla: https://framagit.org/hubzilla/core/blob/master/include/crypto.php
+ *
+ * @param array $data
+ * @param string $prvkey The private key used for decryption.
+ *
+ * @return string|boolean The decrypted string or false on failure.
+ */
+ private static function unencapsulateAes($data, $prvkey)
+ {
+ openssl_private_decrypt(Strings::base64UrlDecode($data['key']), $k, $prvkey);
+ openssl_private_decrypt(Strings::base64UrlDecode($data['iv']), $i, $prvkey);
+
+ return self::decryptAES256CBC(Strings::base64UrlDecode($data['data']), $k, $i);
+ }
+
+
+ /**
+ * Creates cryptographic secure random digits
+ *
+ * @param string $digits The count of digits
+ * @return int The random Digits
+ *
+ * @throws \Exception In case 'random_int' isn't usable
+ */
+ public static function randomDigits($digits)
+ {
+ $rn = '';
+
+ // generating cryptographically secure pseudo-random integers
+ for ($i = 0; $i < $digits; $i++) {
+ $rn .= random_int(0, 9);
+ }
+
+ return $rn;
+ }
}
projects / friendica.git / blobdiff