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[feature/elliptic-curve] Use an instance of Crypt_Hash instead of sha1().

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This commit is contained in:
Andreas Fischer 2013-06-07 00:38:38 +02:00
parent dadaaf791e
commit a730ed6e4c
1 changed files with 17 additions and 17 deletions
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34
phpseclib/Net/SSH2.php
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@ -1166,8 +1166,6 @@ class Net_SSH2 {
'020BBEA63B139B22514A08798E3404DDEF9519B3CD3A431B302B0A6DF25F1437' . '020BBEA63B139B22514A08798E3404DDEF9519B3CD3A431B302B0A6DF25F1437' .
'4FE1356D6D51C245E485B576625E7EC6F44C42E9A637ED6B0BFF5CB6F406B7ED' . '4FE1356D6D51C245E485B576625E7EC6F44C42E9A637ED6B0BFF5CB6F406B7ED' .
'EE386BFB5A899FA5AE9F24117C4B1FE649286651ECE65381FFFFFFFFFFFFFFFF'); 'EE386BFB5A899FA5AE9F24117C4B1FE649286651ECE65381FFFFFFFFFFFFFFFF');
$keyLength = $keyLength < 20 ? $keyLength : 20;
$hash = 'sha1';
break; break;
// see http://tools.ietf.org/html/rfc3526#section-3 // see http://tools.ietf.org/html/rfc3526#section-3
case 'diffie-hellman-group14-sha1': case 'diffie-hellman-group14-sha1':
@ -1179,10 +1177,12 @@ class Net_SSH2 {
'9ED529077096966D670C354E4ABC9804F1746C08CA18217C32905E462E36CE3B' . '9ED529077096966D670C354E4ABC9804F1746C08CA18217C32905E462E36CE3B' .
'E39E772C180E86039B2783A2EC07A28FB5C55DF06F4C52C9DE2BCBF695581718' . 'E39E772C180E86039B2783A2EC07A28FB5C55DF06F4C52C9DE2BCBF695581718' .
'3995497CEA956AE515D2261898FA051015728E5A8AACAA68FFFFFFFFFFFFFFFF'); '3995497CEA956AE515D2261898FA051015728E5A8AACAA68FFFFFFFFFFFFFFFF');
$keyLength = $keyLength < 20 ? $keyLength : 20; break;
$hash = 'sha1';
} }
$kexHash = new Crypt_Hash('sha1');
$keyLength = min($keyLength, $kexHash->getLength());
$p = new Math_BigInteger($p, 256); $p = new Math_BigInteger($p, 256);
//$q = $p->bitwise_rightShift(1); //$q = $p->bitwise_rightShift(1);
@ -1248,7 +1248,7 @@ class Net_SSH2 {
$eBytes, strlen($fBytes), $fBytes, strlen($keyBytes), $keyBytes $eBytes, strlen($fBytes), $fBytes, strlen($keyBytes), $keyBytes
); );
$this->exchange_hash = pack('H*', $hash($this->exchange_hash)); $this->exchange_hash = $kexHash->hash($this->exchange_hash);
if ($this->session_id === false) { if ($this->session_id === false) {
$this->session_id = $this->exchange_hash; $this->session_id = $this->exchange_hash;
@ -1447,15 +1447,15 @@ class Net_SSH2 {
$this->encrypt->enableContinuousBuffer(); $this->encrypt->enableContinuousBuffer();
$this->encrypt->disablePadding(); $this->encrypt->disablePadding();
$iv = pack('H*', $hash($keyBytes . $this->exchange_hash . 'A' . $this->session_id)); $iv = $kexHash->hash($keyBytes . $this->exchange_hash . 'A' . $this->session_id);
while ($this->encrypt_block_size > strlen($iv)) { while ($this->encrypt_block_size > strlen($iv)) {
$iv.= pack('H*', $hash($keyBytes . $this->exchange_hash . $iv)); $iv.= $kexHash->hash($keyBytes . $this->exchange_hash . $iv);
} }
$this->encrypt->setIV(substr($iv, 0, $this->encrypt_block_size)); $this->encrypt->setIV(substr($iv, 0, $this->encrypt_block_size));
$key = pack('H*', $hash($keyBytes . $this->exchange_hash . 'C' . $this->session_id)); $key = $kexHash->hash($keyBytes . $this->exchange_hash . 'C' . $this->session_id);
while ($encryptKeyLength > strlen($key)) { while ($encryptKeyLength > strlen($key)) {
$key.= pack('H*', $hash($keyBytes . $this->exchange_hash . $key)); $key.= $kexHash->hash($keyBytes . $this->exchange_hash . $key);
} }
$this->encrypt->setKey(substr($key, 0, $encryptKeyLength)); $this->encrypt->setKey(substr($key, 0, $encryptKeyLength));
} }
@ -1464,15 +1464,15 @@ class Net_SSH2 {
$this->decrypt->enableContinuousBuffer(); $this->decrypt->enableContinuousBuffer();
$this->decrypt->disablePadding(); $this->decrypt->disablePadding();
$iv = pack('H*', $hash($keyBytes . $this->exchange_hash . 'B' . $this->session_id)); $iv = $kexHash->hash($keyBytes . $this->exchange_hash . 'B' . $this->session_id);
while ($this->decrypt_block_size > strlen($iv)) { while ($this->decrypt_block_size > strlen($iv)) {
$iv.= pack('H*', $hash($keyBytes . $this->exchange_hash . $iv)); $iv.= $kexHash->hash($keyBytes . $this->exchange_hash . $iv);
} }
$this->decrypt->setIV(substr($iv, 0, $this->decrypt_block_size)); $this->decrypt->setIV(substr($iv, 0, $this->decrypt_block_size));
$key = pack('H*', $hash($keyBytes . $this->exchange_hash . 'D' . $this->session_id)); $key = $kexHash->hash($keyBytes . $this->exchange_hash . 'D' . $this->session_id);
while ($decryptKeyLength > strlen($key)) { while ($decryptKeyLength > strlen($key)) {
$key.= pack('H*', $hash($keyBytes . $this->exchange_hash . $key)); $key.= $kexHash->hash($keyBytes . $this->exchange_hash . $key);
} }
$this->decrypt->setKey(substr($key, 0, $decryptKeyLength)); $this->decrypt->setKey(substr($key, 0, $decryptKeyLength));
} }
@ -1546,15 +1546,15 @@ class Net_SSH2 {
$this->hmac_size = 12; $this->hmac_size = 12;
} }
$key = pack('H*', $hash($keyBytes . $this->exchange_hash . 'E' . $this->session_id)); $key = $kexHash->hash($keyBytes . $this->exchange_hash . 'E' . $this->session_id);
while ($createKeyLength > strlen($key)) { while ($createKeyLength > strlen($key)) {
$key.= pack('H*', $hash($keyBytes . $this->exchange_hash . $key)); $key.= $kexHash->hash($keyBytes . $this->exchange_hash . $key);
} }
$this->hmac_create->setKey(substr($key, 0, $createKeyLength)); $this->hmac_create->setKey(substr($key, 0, $createKeyLength));
$key = pack('H*', $hash($keyBytes . $this->exchange_hash . 'F' . $this->session_id)); $key = $kexHash->hash($keyBytes . $this->exchange_hash . 'F' . $this->session_id);
while ($checkKeyLength > strlen($key)) { while ($checkKeyLength > strlen($key)) {
$key.= pack('H*', $hash($keyBytes . $this->exchange_hash . $key)); $key.= $kexHash->hash($keyBytes . $this->exchange_hash . $key);
} }
$this->hmac_check->setKey(substr($key, 0, $checkKeyLength)); $this->hmac_check->setKey(substr($key, 0, $checkKeyLength));