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Merge branch '1.0' into 2.0

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terrafrost 2021-03-19 16:59:46 -05:00
commit 6136434139
1 changed files with 46 additions and 21 deletions
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67
phpseclib/Crypt/Base.php
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@ -779,12 +779,14 @@ abstract class Base
} }
if ($this->engine === self::ENGINE_MCRYPT) { if ($this->engine === self::ENGINE_MCRYPT) {
set_error_handler(array($this, 'do_nothing'));
if ($this->changed) { if ($this->changed) {
$this->_setupMcrypt(); $this->_setupMcrypt();
$this->changed = false; $this->changed = false;
} }
if ($this->enchanged) { if ($this->enchanged) {
@mcrypt_generic_init($this->enmcrypt, $this->key, $this->encryptIV); mcrypt_generic_init($this->enmcrypt, $this->key, $this->encryptIV);
$this->enchanged = false; $this->enchanged = false;
} }
@ -817,15 +819,15 @@ abstract class Base
if ($len >= $block_size) { if ($len >= $block_size) {
if ($this->enbuffer['enmcrypt_init'] === false || $len > $this->cfb_init_len) { if ($this->enbuffer['enmcrypt_init'] === false || $len > $this->cfb_init_len) {
if ($this->enbuffer['enmcrypt_init'] === true) { if ($this->enbuffer['enmcrypt_init'] === true) {
@mcrypt_generic_init($this->enmcrypt, $this->key, $iv); mcrypt_generic_init($this->enmcrypt, $this->key, $iv);
$this->enbuffer['enmcrypt_init'] = false; $this->enbuffer['enmcrypt_init'] = false;
} }
$ciphertext.= @mcrypt_generic($this->enmcrypt, substr($plaintext, $i, $len - $len % $block_size)); $ciphertext.= mcrypt_generic($this->enmcrypt, substr($plaintext, $i, $len - $len % $block_size));
$iv = substr($ciphertext, -$block_size); $iv = substr($ciphertext, -$block_size);
$len%= $block_size; $len%= $block_size;
} else { } else {
while ($len >= $block_size) { while ($len >= $block_size) {
$iv = @mcrypt_generic($this->ecb, $iv) ^ substr($plaintext, $i, $block_size); $iv = mcrypt_generic($this->ecb, $iv) ^ substr($plaintext, $i, $block_size);
$ciphertext.= $iv; $ciphertext.= $iv;
$len-= $block_size; $len-= $block_size;
$i+= $block_size; $i+= $block_size;
@ -834,22 +836,26 @@ abstract class Base
} }
if ($len) { if ($len) {
$iv = @mcrypt_generic($this->ecb, $iv); $iv = mcrypt_generic($this->ecb, $iv);
$block = $iv ^ substr($plaintext, -$len); $block = $iv ^ substr($plaintext, -$len);
$iv = substr_replace($iv, $block, 0, $len); $iv = substr_replace($iv, $block, 0, $len);
$ciphertext.= $block; $ciphertext.= $block;
$pos = $len; $pos = $len;
} }
restore_error_handler();
return $ciphertext; return $ciphertext;
} }
$ciphertext = @mcrypt_generic($this->enmcrypt, $plaintext); $ciphertext = mcrypt_generic($this->enmcrypt, $plaintext);
if (!$this->continuousBuffer) { if (!$this->continuousBuffer) {
@mcrypt_generic_init($this->enmcrypt, $this->key, $this->encryptIV); mcrypt_generic_init($this->enmcrypt, $this->key, $this->encryptIV);
} }
restore_error_handler();
return $ciphertext; return $ciphertext;
} }
@ -1118,13 +1124,14 @@ abstract class Base
} }
if ($this->engine === self::ENGINE_MCRYPT) { if ($this->engine === self::ENGINE_MCRYPT) {
set_error_handler(array($this, 'do_nothing'));
$block_size = $this->block_size; $block_size = $this->block_size;
if ($this->changed) { if ($this->changed) {
$this->_setupMcrypt(); $this->_setupMcrypt();
$this->changed = false; $this->changed = false;
} }
if ($this->dechanged) { if ($this->dechanged) {
@mcrypt_generic_init($this->demcrypt, $this->key, $this->decryptIV); mcrypt_generic_init($this->demcrypt, $this->key, $this->decryptIV);
$this->dechanged = false; $this->dechanged = false;
} }
@ -1152,26 +1159,30 @@ abstract class Base
} }
if ($len >= $block_size) { if ($len >= $block_size) {
$cb = substr($ciphertext, $i, $len - $len % $block_size); $cb = substr($ciphertext, $i, $len - $len % $block_size);
$plaintext.= @mcrypt_generic($this->ecb, $iv . $cb) ^ $cb; $plaintext.= mcrypt_generic($this->ecb, $iv . $cb) ^ $cb;
$iv = substr($cb, -$block_size); $iv = substr($cb, -$block_size);
$len%= $block_size; $len%= $block_size;
} }
if ($len) { if ($len) {
$iv = @mcrypt_generic($this->ecb, $iv); $iv = mcrypt_generic($this->ecb, $iv);
$plaintext.= $iv ^ substr($ciphertext, -$len); $plaintext.= $iv ^ substr($ciphertext, -$len);
$iv = substr_replace($iv, substr($ciphertext, -$len), 0, $len); $iv = substr_replace($iv, substr($ciphertext, -$len), 0, $len);
$pos = $len; $pos = $len;
} }
restore_error_handler();
return $plaintext; return $plaintext;
} }
$plaintext = @mdecrypt_generic($this->demcrypt, $ciphertext); $plaintext = mdecrypt_generic($this->demcrypt, $ciphertext);
if (!$this->continuousBuffer) { if (!$this->continuousBuffer) {
@mcrypt_generic_init($this->demcrypt, $this->key, $this->decryptIV); mcrypt_generic_init($this->demcrypt, $this->key, $this->decryptIV);
} }
restore_error_handler();
return $this->paddable ? $this->_unpad($plaintext) : $plaintext; return $this->paddable ? $this->_unpad($plaintext) : $plaintext;
} }
@ -1649,9 +1660,12 @@ abstract class Base
} }
return false; return false;
case self::ENGINE_MCRYPT: case self::ENGINE_MCRYPT:
return $this->cipher_name_mcrypt && set_error_handler(array($this, 'do_nothing'));
$result = $this->cipher_name_mcrypt &&
extension_loaded('mcrypt') && extension_loaded('mcrypt') &&
in_array($this->cipher_name_mcrypt, @mcrypt_list_algorithms()); in_array($this->cipher_name_mcrypt, mcrypt_list_algorithms());
restore_error_handler();
return $result;
case self::ENGINE_INTERNAL: case self::ENGINE_INTERNAL:
return true; return true;
} }
@ -1728,17 +1742,19 @@ abstract class Base
} }
if ($this->engine != self::ENGINE_MCRYPT && $this->enmcrypt) { if ($this->engine != self::ENGINE_MCRYPT && $this->enmcrypt) {
set_error_handler(array($this, 'do_nothing'));
// Closing the current mcrypt resource(s). _mcryptSetup() will, if needed, // Closing the current mcrypt resource(s). _mcryptSetup() will, if needed,
// (re)open them with the module named in $this->cipher_name_mcrypt // (re)open them with the module named in $this->cipher_name_mcrypt
@mcrypt_module_close($this->enmcrypt); mcrypt_module_close($this->enmcrypt);
@mcrypt_module_close($this->demcrypt); mcrypt_module_close($this->demcrypt);
$this->enmcrypt = null; $this->enmcrypt = null;
$this->demcrypt = null; $this->demcrypt = null;
if ($this->ecb) { if ($this->ecb) {
@mcrypt_module_close($this->ecb); mcrypt_module_close($this->ecb);
$this->ecb = null; $this->ecb = null;
} }
restore_error_handler();
} }
$this->changed = true; $this->changed = true;
@ -1851,19 +1867,19 @@ abstract class Base
self::MODE_STREAM => MCRYPT_MODE_STREAM, self::MODE_STREAM => MCRYPT_MODE_STREAM,
); );
$this->demcrypt = @mcrypt_module_open($this->cipher_name_mcrypt, '', $mcrypt_modes[$this->mode], ''); $this->demcrypt = mcrypt_module_open($this->cipher_name_mcrypt, '', $mcrypt_modes[$this->mode], '');
$this->enmcrypt = @mcrypt_module_open($this->cipher_name_mcrypt, '', $mcrypt_modes[$this->mode], ''); $this->enmcrypt = mcrypt_module_open($this->cipher_name_mcrypt, '', $mcrypt_modes[$this->mode], '');
// we need the $ecb mcrypt resource (only) in MODE_CFB with enableContinuousBuffer() // we need the $ecb mcrypt resource (only) in MODE_CFB with enableContinuousBuffer()
// to workaround mcrypt's broken ncfb implementation in buffered mode // to workaround mcrypt's broken ncfb implementation in buffered mode
// see: {@link http://phpseclib.sourceforge.net/cfb-demo.phps} // see: {@link http://phpseclib.sourceforge.net/cfb-demo.phps}
if ($this->mode == self::MODE_CFB) { if ($this->mode == self::MODE_CFB) {
$this->ecb = @mcrypt_module_open($this->cipher_name_mcrypt, '', MCRYPT_MODE_ECB, ''); $this->ecb = mcrypt_module_open($this->cipher_name_mcrypt, '', MCRYPT_MODE_ECB, '');
} }
} // else should mcrypt_generic_deinit be called? } // else should mcrypt_generic_deinit be called?
if ($this->mode == self::MODE_CFB) { if ($this->mode == self::MODE_CFB) {
@mcrypt_generic_init($this->ecb, $this->key, str_repeat("\0", $this->block_size)); mcrypt_generic_init($this->ecb, $this->key, str_repeat("\0", $this->block_size));
} }
} }
@ -2696,4 +2712,13 @@ abstract class Base
return $safeint . '((fmod(floor($temp / 0x80000000), 2) & 1) << 31))'; return $safeint . '((fmod(floor($temp / 0x80000000), 2) & 1) << 31))';
} }
} }
/**
* Dummy error handler to suppress mcrypt errors
*
* @access private
*/
function do_nothing()
{
}
} }