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Merge pull request #500 from terrafrost/ssh-rsa-fix

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SSH2: fix issues with RSA key verification

* terrafrost/ssh-rsa-fix:
  SSH2: fix issues with RSA key verification
This commit is contained in:
Andreas Fischer 2014-11-07 13:08:53 +01:00
commit e540752e9a
1 changed files with 5 additions and 4 deletions
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9
phpseclib/Net/SSH2.php
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@ -77,7 +77,7 @@ define('NET_SSH2_MASK_CONNECTED', 0x00000002);
define('NET_SSH2_MASK_LOGIN_REQ', 0x00000004);
define('NET_SSH2_MASK_LOGIN', 0x00000008);
define('NET_SSH2_MASK_SHELL', 0x00000010);
define('NET_SSH2_MASK_WINDOW_ADJUST', 0X00000020);
define('NET_SSH2_MASK_WINDOW_ADJUST', 0x00000020);
/**#@-*/
/**#@+
@ -3769,8 +3769,9 @@ class Net_SSH2
$e = new Math_BigInteger($this->_string_shift($server_public_host_key, $temp['length']), -256);
$temp = unpack('Nlength', $this->_string_shift($server_public_host_key, 4));
$n = new Math_BigInteger($this->_string_shift($server_public_host_key, $temp['length']), -256);
$nLength = $temp['length'];
$rawN = $this->_string_shift($server_public_host_key, $temp['length']);
$n = new Math_BigInteger($rawN, -256);
$nLength = strlen(ltrim($rawN, "\0"));
/*
$temp = unpack('Nlength', $this->_string_shift($signature, 4));
@ -3807,7 +3808,7 @@ class Net_SSH2
$s = $s->toBytes();
$h = pack('N4H*', 0x00302130, 0x0906052B, 0x0E03021A, 0x05000414, sha1($this->exchange_hash));
$h = chr(0x01) . str_repeat(chr(0xFF), $nLength - 3 - strlen($h)) . $h;
$h = chr(0x01) . str_repeat(chr(0xFF), $nLength - 2 - strlen($h)) . $h;
if ($s != $h) {
user_error('Bad server signature');