From 0aba609ad408faabe72826a006b8af0fe15a3c2f Mon Sep 17 00:00:00 2001
From: friendica <info@friendica.com>
Date: Sat, 28 Mar 2015 14:53:00 -0700
Subject: issue #941

---
 include/crypto.php | 15 +++++++++++----
 1 file changed, 11 insertions(+), 4 deletions(-)

(limited to 'include')

diff --git a/include/crypto.php b/include/crypto.php
index ab083cfaa..a4ce2cf98 100644
--- a/include/crypto.php
+++ b/include/crypto.php
@@ -300,7 +300,6 @@ function salmon_key($pubkey) {
 // used in Friendica 'RINO'. This function is messy and should be retired. 
  
 
-if(! function_exists('aes_decrypt')) {
 function aes_decrypt($val,$ky)
 {
     $key="\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0";
@@ -310,10 +309,10 @@ function aes_decrypt($val,$ky)
     $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)
 {
     $key="\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0";
@@ -323,6 +322,14 @@ function aes_encrypt($val,$ky)
     $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 z_obscure($s) {
+	return json_encode(crypto_encapsulate($s,get_config('system','pubkey')));
+}
 
+function z_unobscure($s) {
+	if(strpos($s,"{\"") !== 0)
+		return $s;
+	return crypto_unencapsulate(json_decode($s,true),get_config('system','prvkey'));
+}
-- 
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