diff options
| -rw-r--r-- | mod/receive.php | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/mod/receive.php b/mod/receive.php index 188f55f21..f5a2eb7b6 100644 --- a/mod/receive.php +++ b/mod/receive.php @@ -194,7 +194,7 @@ function receive_post(&$a) { logger('mod-diaspora: Fetching key for ' . $author_link ); -// Get diaspora public key (pkcs#1) and convert to pkcs#8 + // Get diaspora public key (pkcs#1) and convert to pkcs#8 $key = get_diaspora_key($author_link); if(! $key) { @@ -202,14 +202,17 @@ function receive_post(&$a) { receive_return(400); } + $verify = false; if (version_compare(PHP_VERSION, '5.3.0', '>=')) { $verify = openssl_verify($signed_data,$signature,$key,'sha256'); } else { - // FIXME // fallback sha256 verify for PHP < 5.3 - + $rawsig = ''; + $hash = hash('sha256',$signed_data,true); + openssl_public_decrypt($signature,$rawsig,$key); + $verify = (($rawsig && substr($rawsig,-32) === $hash) ? true : false); } if(! $verify) { |