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RSA: updates per Joey3000

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This commit is contained in:
terrafrost 2016-01-03 13:01:53 -06:00
parent 806249c7e9
commit d5a359b41e
2 changed files with 39 additions and 21 deletions
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51
phpseclib/Crypt/RSA.php
View File

@ -45,8 +45,6 @@
namespace phpseclib\Crypt;
use phpseclib\Crypt\Hash;
use phpseclib\Crypt\Random;
use phpseclib\Math\BigInteger;
use phpseclib\File\ASN1;
@ -1683,6 +1681,7 @@ class RSA
*
* @access private
* @param string $m
* @param bool $pkcs15_compat optional
* @throws \OutOfBoundsException if strlen($m) > $this->k - 11
* @return string
*/
@ -1870,7 +1869,7 @@ class RSA
*
* @access private
* @param string $m
* @return string
* @return bool|string
*/
function _rsassa_pss_sign($m)
{
@ -1940,9 +1939,6 @@ class RSA
function _emsa_pkcs1_v1_5_encode($m, $emLen)
{
$h = $this->hash->hash($m);
if ($h === false) {
return false;
}
// see http://tools.ietf.org/html/rfc3447#page-43
switch ($this->hashName) {
@ -1986,7 +1982,7 @@ class RSA
* @access private
* @param string $m
* @throws \LengthException if the RSA modulus is too short
* @return string
* @return bool|string
*/
function _rsassa_pkcs1_v1_5_sign($m)
{
@ -1994,9 +1990,10 @@ class RSA
// If the encoding operation outputs "intended encoded message length too short," output "RSA modulus
// too short" and stop.
$em = $this->_emsa_pkcs1_v1_5_encode($m, $this->k);
if ($em === false) {
return false;
try {
$em = $this->_emsa_pkcs1_v1_5_encode($m, $this->k);
} catch (\LengthException $e) {
throw new \LengthException('RSA modulus too short');
}
// RSA signature
@ -2017,8 +2014,9 @@ class RSA
*
* @access private
* @param string $m
* @param string $s
* @throws \LengthException if the RSA modulus is too short
* @return bool|string
* @return bool
*/
function _rsassa_pkcs1_v1_5_verify($m, $s)
{
@ -2069,7 +2067,8 @@ class RSA
*
* @access private
* @param string $m
* @return bool|string
* @param string $s
* @return bool
*/
function _rsassa_pkcs1_v1_5_relaxed_verify($m, $s)
{
@ -2166,8 +2165,8 @@ class RSA
* @see self::decrypt()
* @access public
* @param string $plaintext
* @param int $padding
* @return string
* @param int $padding optional
* @return bool|string
* @throws \LengthException if the RSA modulus is too short
*/
function encrypt($plaintext, $padding = self::PADDING_OAEP)
@ -2177,7 +2176,11 @@ class RSA
$plaintext = str_split($plaintext, $this->k);
$ciphertext = '';
foreach ($plaintext as $m) {
$ciphertext.= $this->_raw_encrypt($m);
$temp = $this->_raw_encrypt($m);
if ($temp === false) {
return false;
}
$ciphertext.= $temp;
}
return $ciphertext;
case self::PADDING_PKCS15_COMPAT:
@ -2190,7 +2193,11 @@ class RSA
$plaintext = str_split($plaintext, $length);
$ciphertext = '';
foreach ($plaintext as $m) {
$ciphertext.= $this->_rsaes_pkcs1_v1_5_encrypt($m, $padding == self::PADDING_PKCS15_COMPAT);
$temp = $this->_rsaes_pkcs1_v1_5_encrypt($m, $padding == self::PADDING_PKCS15_COMPAT);
if ($temp === false) {
return false;
}
$ciphertext.= $temp;
}
return $ciphertext;
//case self::PADDING_OAEP:
@ -2203,7 +2210,11 @@ class RSA
$plaintext = str_split($plaintext, $length);
$ciphertext = '';
foreach ($plaintext as $m) {
$ciphertext.= $this->_rsaes_oaep_encrypt($m);
$temp = $this->_rsaes_oaep_encrypt($m);
if ($temp === false) {
return false;
}
$ciphertext.= $temp;
}
return $ciphertext;
}
@ -2215,7 +2226,7 @@ class RSA
* @see self::encrypt()
* @access public
* @param string $plaintext
* @param int|bool $padding
* @param int $padding optional
* @return string
*/
function decrypt($ciphertext, $padding = self::PADDING_OAEP)
@ -2258,7 +2269,7 @@ class RSA
* @see self::verify()
* @access public
* @param string $message
* @param int $padding
* @param int $padding optional
* @return string
*/
function sign($message, $padding = self::PADDING_PSS)
@ -2284,7 +2295,7 @@ class RSA
* @access public
* @param string $message
* @param string $signature
* @param int|bool $padding
* @param int $padding optional
* @return bool
*/
function verify($message, $signature, $padding = self::PADDING_PSS)

9
phpseclib/System/SSH/Agent/Identity.php
View File

@ -16,6 +16,8 @@
namespace phpseclib\System\SSH\Agent;
use phpseclib\System\SSH\Agent;
use phpseclib\Crypt\RSA;
use phpseclib\Exception\UnsupportedAlgorithmException;
/**
* Pure-PHP ssh-agent client identity object
@ -122,10 +124,15 @@ class Identity
* @param int|bool $padding
* @return string
* @throws \RuntimeException on connection errors
* @throws \phpseclib\Exception\UnsupportedAlgorithmException if the algorithm is unsupported
* @access public
*/
function sign($message, $padding = false)
function sign($message, $padding = RSA::PADDING_PSS)
{
if ($padding != RSA::PADDING_PKCS1 && $padding != RSA::PADDING_RELAXED_PKCS1) {
throw new \UnsupportedAlgorithmException('ssh-agent can only create PKCS1 signatures');
}
// the last parameter (currently 0) is for flags and ssh-agent only defines one flag (for ssh-dss): SSH_AGENT_OLD_SIGNATURE
$packet = pack('CNa*Na*N', Agent::SSH_AGENTC_SIGN_REQUEST, strlen($this->key_blob), $this->key_blob, strlen($message), $message, 0);
$packet = pack('Na*', strlen($packet), $packet);