1 files changed, 52 insertions, 9 deletions

diff --git a/include/crypto.php b/include/crypto.php
index 1ab9e7b25..a20606db5 100644
--- a/include/crypto.php
+++ b/include/crypto.php
@@ -3,19 +3,20 @@
 require_once('library/ASNValue.class.php');
 require_once('library/asn1.php');
 
+// supported algorithms are 'sha256', 'sha1'
 
-function rsa_sign($data,$key) {
+function rsa_sign($data,$key,$alg = 'sha256') {
 
 	$sig = '';
-	if (version_compare(PHP_VERSION, '5.3.0', '>=')) {
-		openssl_sign($data,$sig,$key,'sha256');
+	if (version_compare(PHP_VERSION, '5.3.0', '>=') || $alg === 'sha1') {
+		openssl_sign($data,$sig,$key,(($alg == 'sha1') ? OPENSSL_ALGO_SHA1 : $alg));
     }
     else {
 		if(strlen($key) < 1024 || extension_loaded('gmp')) {
 			require_once('library/phpsec/Crypt/RSA.php');
 			$rsa = new CRYPT_RSA();
 			$rsa->signatureMode = CRYPT_RSA_SIGNATURE_PKCS1;
-			$rsa->setHash('sha256');
+			$rsa->setHash($alg);
 			$rsa->loadKey($key);
 			$sig = $rsa->sign($data);
 		}
@@ -27,17 +28,17 @@ function rsa_sign($data,$key) {
 	return $sig;
 }
 
-function rsa_verify($data,$sig,$key) {
+function rsa_verify($data,$sig,$key,$alg = 'sha256') {
 
-	if (version_compare(PHP_VERSION, '5.3.0', '>=')) {
-		$verify = openssl_verify($data,$sig,$key,'sha256');
+	if (version_compare(PHP_VERSION, '5.3.0', '>=') || $alg === 'sha1') {
+		$verify = openssl_verify($data,$sig,$key,(($alg == 'sha1') ? OPENSSL_ALGO_SHA1 : $alg));
     }
     else {
 		if(strlen($key) <= 300 || extension_loaded('gmp')) {
 			require_once('library/phpsec/Crypt/RSA.php');
 			$rsa = new CRYPT_RSA();
 			$rsa->signatureMode = CRYPT_RSA_SIGNATURE_PKCS1;
-			$rsa->setHash('sha256');
+			$rsa->setHash($alg);
 			$rsa->loadKey($key);
 			$verify = $rsa->verify($data,$sig);
 		}
@@ -74,7 +75,7 @@ function DerToRsa($Der)
     //Encode:
     $Der = base64_encode($Der);
     //Split lines:
-    $lines = str_split($Der, 65);
+    $lines = str_split($Der, 64);
     $body = implode("\n", $lines);
     //Get title:
     $title = 'RSA PUBLIC KEY';
@@ -182,3 +183,45 @@ function salmon_key($pubkey) {
 	pemtome($pubkey,$m,$e);
 	return 'RSA' . '.' . base64url_encode($m,true) . '.' . base64url_encode($e,true) ;
 }
+
+
+
+if(! function_exists('aes_decrypt')) {
+function aes_decrypt($val,$ky)
+{
+    $key="\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0";
+    for($a=0;$a<strlen($ky);$a++)
+      $key[$a%16]=chr(ord($key[$a%16]) ^ ord($ky[$a]));
+    $mode = MCRYPT_MODE_ECB;
+    $enc = MCRYPT_RIJNDAEL_128;
+    $dec = @mcrypt_decrypt($enc, $key, $val, $mode, @mcrypt_create_iv( @mcrypt_get_iv_size($enc, $mode), MCRYPT_DEV_URANDOM ) );
+    return rtrim($dec,(( ord(substr($dec,strlen($dec)-1,1))>=0 and ord(substr($dec, strlen($dec)-1,1))<=16)? chr(ord( substr($dec,strlen($dec)-1,1))):null));
+}}
+
+
+if(! function_exists('aes_encrypt')) {
+function aes_encrypt($val,$ky)
+{
+    $key="\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0";
+    for($a=0;$a<strlen($ky);$a++)
+      $key[$a%16]=chr(ord($key[$a%16]) ^ ord($ky[$a]));
+    $mode=MCRYPT_MODE_ECB;
+    $enc=MCRYPT_RIJNDAEL_128;
+    $val=str_pad($val, (16*(floor(strlen($val) / 16)+(strlen($val) % 16==0?2:1))), chr(16-(strlen($val) % 16)));
+    return mcrypt_encrypt($enc, $key, $val, $mode, mcrypt_create_iv( mcrypt_get_iv_size($enc, $mode), MCRYPT_DEV_URANDOM));
+}} 
+
+
+function pkcs5_pad ($text, $blocksize)
+{
+    $pad = $blocksize - (strlen($text) % $blocksize);
+    return $text . str_repeat(chr($pad), $pad);
+}
+
+function pkcs5_unpad($text)
+{
+    $pad = ord($text{strlen($text)-1});
+    if ($pad > strlen($text)) return false;
+    if (strspn($text, chr($pad), strlen($text) - $pad) != $pad) return false;
+    return substr($text, 0, -1 * $pad);
+}