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DES: Fix memory leak with CTR mode

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This commit is contained in:
terrafrost 2013-03-03 00:31:48 -06:00
parent 1d1c2782e9
commit bf3ca6312e
1 changed files with 6 additions and 2 deletions
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8
phpseclib/Crypt/DES.php
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@ -593,7 +593,9 @@ class Crypt_DES {
if (strlen($buffer['encrypted'])) {
for ($i = 0; $i < strlen($plaintext); $i+=8) {
$block = substr($plaintext, $i, 8);
$buffer['encrypted'].= $this->_processBlock($this->_generate_xor($xor), CRYPT_DES_ENCRYPT);
if (strlen($block) > strlen($buffer['encrypted'])) {
$buffer['encrypted'].= $this->_processBlock($this->_generate_xor($xor), CRYPT_DES_ENCRYPT);
}
$key = $this->_string_shift($buffer['encrypted'], 8);
$ciphertext.= $block ^ $key;
}
@ -777,7 +779,9 @@ class Crypt_DES {
if (strlen($buffer['ciphertext'])) {
for ($i = 0; $i < strlen($ciphertext); $i+=8) {
$block = substr($ciphertext, $i, 8);
$buffer['ciphertext'].= $this->_processBlock($this->_generate_xor($xor), CRYPT_DES_ENCRYPT);
if (strlen($block) > strlen($buffer['ciphertext'])) {
$buffer['ciphertext'].= $this->_processBlock($this->_generate_xor($xor), CRYPT_DES_ENCRYPT);
}
$key = $this->_string_shift($buffer['ciphertext'], 8);
$plaintext.= $block ^ $key;
}